/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-bad-ring.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-07 15:58:35,293 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-07 15:58:35,296 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-07 15:58:35,344 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-07 15:58:35,344 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-07 15:58:35,350 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-07 15:58:35,354 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-07 15:58:35,358 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-07 15:58:35,361 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-07 15:58:35,369 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-07 15:58:35,371 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-07 15:58:35,372 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-07 15:58:35,373 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-07 15:58:35,376 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-07 15:58:35,378 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-07 15:58:35,383 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-07 15:58:35,385 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-07 15:58:35,386 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-07 15:58:35,394 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-07 15:58:35,398 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-07 15:58:35,413 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-07 15:58:35,414 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-07 15:58:35,415 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-07 15:58:35,418 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-07 15:58:35,426 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-10-07 15:58:35,429 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-07 15:58:35,431 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-07 15:58:35,433 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-07 15:58:35,434 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-07 15:58:35,436 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-07 15:58:35,436 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-07 15:58:35,437 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-07 15:58:35,437 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-07 15:58:35,437 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-07 15:58:35,438 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-07 15:58:35,439 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-07 15:58:35,446 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-07 15:58:35,492 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-07 15:58:35,492 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-07 15:58:35,493 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-07 15:58:35,493 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-07 15:58:35,497 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-07 15:58:35,497 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-07 15:58:35,497 INFO L138 SettingsManager]: * Use SBE=true [2021-10-07 15:58:35,498 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-07 15:58:35,498 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-07 15:58:35,498 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-07 15:58:35,499 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-07 15:58:35,499 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-07 15:58:35,499 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-07 15:58:35,500 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-07 15:58:35,500 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-07 15:58:35,500 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-07 15:58:35,500 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-07 15:58:35,501 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-07 15:58:35,501 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-07 15:58:35,501 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-07 15:58:35,501 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-07 15:58:35,501 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-07 15:58:35,502 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-07 15:58:35,502 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-07 15:58:35,502 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-07 15:58:35,502 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-07 15:58:35,502 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-07 15:58:35,503 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-07 15:58:35,503 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-07 15:58:35,503 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-07 15:58:35,503 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-07 15:58:35,503 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-07 15:58:35,504 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-07 15:58:35,888 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-07 15:58:35,913 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-07 15:58:35,916 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-07 15:58:35,918 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-07 15:58:35,918 INFO L275 PluginConnector]: CDTParser initialized [2021-10-07 15:58:35,919 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-bad-ring.wvr.c [2021-10-07 15:58:35,997 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/03716e985/2434059ad8f14f32bbf811ef44d82681/FLAG58eaea6ab [2021-10-07 15:58:36,629 INFO L306 CDTParser]: Found 1 translation units. [2021-10-07 15:58:36,630 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-ring.wvr.c [2021-10-07 15:58:36,642 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/03716e985/2434059ad8f14f32bbf811ef44d82681/FLAG58eaea6ab [2021-10-07 15:58:36,991 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/03716e985/2434059ad8f14f32bbf811ef44d82681 [2021-10-07 15:58:36,993 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-07 15:58:37,002 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-07 15:58:37,004 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-07 15:58:37,004 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-07 15:58:37,008 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-07 15:58:37,009 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:58:36" (1/1) ... [2021-10-07 15:58:37,010 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72b96844 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:58:37, skipping insertion in model container [2021-10-07 15:58:37,010 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:58:36" (1/1) ... [2021-10-07 15:58:37,018 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-07 15:58:37,041 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-07 15:58:37,248 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-bad-ring.wvr.c[3936,3949] [2021-10-07 15:58:37,258 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 15:58:37,274 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-07 15:58:37,285 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-07 15:58:37,311 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-bad-ring.wvr.c[3936,3949] [2021-10-07 15:58:37,315 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 15:58:37,323 INFO L203 MainTranslator]: Completed pre-run [2021-10-07 15:58:37,358 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-bad-ring.wvr.c[3936,3949] [2021-10-07 15:58:37,366 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 15:58:37,397 INFO L208 MainTranslator]: Completed translation [2021-10-07 15:58:37,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:58:37 WrapperNode [2021-10-07 15:58:37,398 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-07 15:58:37,399 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-07 15:58:37,399 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-07 15:58:37,400 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-07 15:58:37,408 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:58:37" (1/1) ... [2021-10-07 15:58:37,444 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:58:37" (1/1) ... [2021-10-07 15:58:37,507 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-07 15:58:37,508 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-07 15:58:37,509 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-07 15:58:37,517 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-07 15:58:37,530 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:58:37" (1/1) ... [2021-10-07 15:58:37,531 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:58:37" (1/1) ... [2021-10-07 15:58:37,556 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:58:37" (1/1) ... [2021-10-07 15:58:37,556 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:58:37" (1/1) ... [2021-10-07 15:58:37,571 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:58:37" (1/1) ... [2021-10-07 15:58:37,579 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:58:37" (1/1) ... [2021-10-07 15:58:37,582 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:58:37" (1/1) ... [2021-10-07 15:58:37,587 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-07 15:58:37,588 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-07 15:58:37,589 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-07 15:58:37,589 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-07 15:58:37,590 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:58:37" (1/1) ... [2021-10-07 15:58:37,598 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-07 15:58:37,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:58:37,627 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-07 15:58:37,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-07 15:58:37,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-07 15:58:37,693 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-07 15:58:37,694 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-07 15:58:37,694 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-07 15:58:37,694 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-07 15:58:37,694 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-07 15:58:37,694 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-07 15:58:37,695 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-07 15:58:37,695 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-07 15:58:37,695 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-07 15:58:37,695 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-07 15:58:37,695 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-07 15:58:37,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-07 15:58:37,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-07 15:58:37,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-07 15:58:37,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-07 15:58:37,698 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-07 15:58:39,771 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-07 15:58:39,771 INFO L299 CfgBuilder]: Removed 46 assume(true) statements. [2021-10-07 15:58:39,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:58:39 BoogieIcfgContainer [2021-10-07 15:58:39,775 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-07 15:58:39,777 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-07 15:58:39,777 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-07 15:58:39,781 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-07 15:58:39,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 03:58:36" (1/3) ... [2021-10-07 15:58:39,782 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14b39e2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:58:39, skipping insertion in model container [2021-10-07 15:58:39,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:58:37" (2/3) ... [2021-10-07 15:58:39,783 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14b39e2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:58:39, skipping insertion in model container [2021-10-07 15:58:39,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:58:39" (3/3) ... [2021-10-07 15:58:39,785 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-bad-ring.wvr.c [2021-10-07 15:58:39,791 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-07 15:58:39,792 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 34 error locations. [2021-10-07 15:58:39,792 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-07 15:58:39,836 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,836 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,837 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,837 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,837 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,837 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,838 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,838 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,838 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~short10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,839 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~short10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,839 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~short10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,839 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~short10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,839 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~short10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,840 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,840 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,840 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,840 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,841 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~short10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,841 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,842 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,842 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,842 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,843 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~short4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,843 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~short4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,843 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~short4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,843 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~short4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,844 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,844 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~short4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,844 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,844 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,845 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,845 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,845 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~short4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,846 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,846 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,846 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,847 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,847 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,847 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,848 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,848 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,848 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,848 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,849 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,849 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,849 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,849 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,850 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,850 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,850 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,850 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,851 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,851 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,851 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,851 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,852 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,852 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,852 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,853 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,853 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,853 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,853 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,854 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,854 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,854 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,854 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,854 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,855 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,855 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,855 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,856 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~s~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,856 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~s~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,856 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,856 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,857 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,857 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,857 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,857 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,858 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,858 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,858 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,858 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,859 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,859 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,859 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,859 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,860 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,860 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,860 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,860 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,861 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,861 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,861 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,862 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,862 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,862 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,862 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~short15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,863 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~short15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,863 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~short15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,863 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~short15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,864 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,864 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,864 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,864 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,865 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,865 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~short15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,865 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,866 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,866 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,866 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,866 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,866 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~short15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,867 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,867 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~s~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,867 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~s~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,868 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,868 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~s~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,868 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~s~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,868 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,868 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,869 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,869 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,870 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,870 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,870 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,870 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,871 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,871 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,871 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,871 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,872 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,872 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,872 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,872 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,873 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,873 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,873 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,873 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,874 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,874 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,874 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,874 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,874 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,875 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,875 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,875 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,875 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,876 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,876 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~short20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,876 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~short20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,876 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~short20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,877 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~short20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,877 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,877 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,877 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~short20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,878 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,878 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,878 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,878 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,879 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,879 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,880 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~short20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,880 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,880 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,880 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,881 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,881 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,881 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,882 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,882 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,882 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,882 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,882 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,883 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,883 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,883 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,886 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,887 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,887 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,887 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,888 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,888 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,888 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,888 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,889 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,889 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,889 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,889 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~short4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,890 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,890 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,890 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~short10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,892 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,893 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,893 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~short20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,893 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,893 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,894 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,894 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,894 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,894 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,895 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,895 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,897 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,897 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,898 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~s~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,898 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,898 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,898 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,899 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,899 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,899 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,899 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~short15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,900 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:58:39,906 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-10-07 15:58:39,957 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-07 15:58:39,965 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-07 15:58:39,966 INFO L340 AbstractCegarLoop]: Starting to check reachability of 51 error locations. [2021-10-07 15:58:39,985 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-07 15:58:39,998 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 255 places, 267 transitions, 558 flow [2021-10-07 15:58:40,002 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 255 places, 267 transitions, 558 flow [2021-10-07 15:58:40,004 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 255 places, 267 transitions, 558 flow [2021-10-07 15:58:40,181 INFO L129 PetriNetUnfolder]: 22/264 cut-off events. [2021-10-07 15:58:40,181 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-07 15:58:40,189 INFO L84 FinitePrefix]: Finished finitePrefix Result has 277 conditions, 264 events. 22/264 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 304 event pairs, 0 based on Foata normal form. 0/208 useless extension candidates. Maximal degree in co-relation 214. Up to 3 conditions per place. [2021-10-07 15:58:40,197 INFO L116 LiptonReduction]: Number of co-enabled transitions 3794 [2021-10-07 15:59:33,116 INFO L131 LiptonReduction]: Checked pairs total: 6767 [2021-10-07 15:59:33,116 INFO L133 LiptonReduction]: Total number of compositions: 291 [2021-10-07 15:59:33,126 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 71 places, 68 transitions, 160 flow [2021-10-07 15:59:33,247 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 2868 states, 2190 states have (on average 4.810502283105023) internal successors, (10535), 2867 states have internal predecessors, (10535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:59:33,261 INFO L276 IsEmpty]: Start isEmpty. Operand has 2868 states, 2190 states have (on average 4.810502283105023) internal successors, (10535), 2867 states have internal predecessors, (10535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:59:33,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-07 15:59:33,267 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:59:33,268 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-07 15:59:33,268 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [thread1Err4REQUIRES_VIOLATION, thread1Err5REQUIRES_VIOLATION, thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION (and 47 more)] === [2021-10-07 15:59:33,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:59:33,274 INFO L82 PathProgramCache]: Analyzing trace with hash 40129, now seen corresponding path program 1 times [2021-10-07 15:59:33,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:59:33,287 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [995353574] [2021-10-07 15:59:33,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:59:33,288 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:59:33,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:59:33,292 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:59:33,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-07 15:59:33,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:59:33,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-07 15:59:33,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:59:33,517 INFO L354 Elim1Store]: treesize reduction 84, result has 22.9 percent of original size [2021-10-07 15:59:33,518 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 30 [2021-10-07 15:59:33,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:59:33,570 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:59:33,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:59:33,578 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:59:33,579 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [995353574] [2021-10-07 15:59:33,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [995353574] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:59:33,580 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:59:33,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-07 15:59:33,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536441441] [2021-10-07 15:59:33,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 15:59:33,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:59:33,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 15:59:33,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:59:33,620 INFO L87 Difference]: Start difference. First operand has 2868 states, 2190 states have (on average 4.810502283105023) internal successors, (10535), 2867 states have internal predecessors, (10535), 0 states have call successors, (0), 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 15:59:34,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:59:34,031 INFO L93 Difference]: Finished difference Result 2864 states and 10183 transitions. [2021-10-07 15:59:34,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:59:34,033 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2021-10-07 15:59:34,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:59:34,085 INFO L225 Difference]: With dead ends: 2864 [2021-10-07 15:59:34,085 INFO L226 Difference]: Without dead ends: 2864 [2021-10-07 15:59:34,086 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:59:34,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2864 states. [2021-10-07 15:59:34,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2864 to 2864. [2021-10-07 15:59:34,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2864 states, 2190 states have (on average 4.649771689497717) internal successors, (10183), 2863 states have internal predecessors, (10183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:59:34,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2864 states to 2864 states and 10183 transitions. [2021-10-07 15:59:34,324 INFO L78 Accepts]: Start accepts. Automaton has 2864 states and 10183 transitions. Word has length 2 [2021-10-07 15:59:34,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:59:34,325 INFO L470 AbstractCegarLoop]: Abstraction has 2864 states and 10183 transitions. [2021-10-07 15:59:34,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:59:34,325 INFO L276 IsEmpty]: Start isEmpty. Operand 2864 states and 10183 transitions. [2021-10-07 15:59:34,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-07 15:59:34,325 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:59:34,325 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-07 15:59:34,340 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 15:59:34,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:59:34,539 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err4REQUIRES_VIOLATION, thread1Err5REQUIRES_VIOLATION, thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION (and 47 more)] === [2021-10-07 15:59:34,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:59:34,541 INFO L82 PathProgramCache]: Analyzing trace with hash 40130, now seen corresponding path program 1 times [2021-10-07 15:59:34,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:59:34,542 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1285586028] [2021-10-07 15:59:34,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:59:34,542 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:59:34,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:59:34,543 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:59:34,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-07 15:59:34,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:59:34,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:59:34,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:59:34,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:59:34,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:59:35,041 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-07 15:59:35,041 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 74 [2021-10-07 15:59:35,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:59:35,136 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:59:35,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:59:35,261 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:59:35,261 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1285586028] [2021-10-07 15:59:35,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1285586028] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:59:35,261 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:59:35,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 15:59:35,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895509728] [2021-10-07 15:59:35,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:59:35,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:59:35,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:59:35,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:59:35,265 INFO L87 Difference]: Start difference. First operand 2864 states and 10183 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 15:59:36,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:59:36,481 INFO L93 Difference]: Finished difference Result 5727 states and 20370 transitions. [2021-10-07 15:59:36,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 15:59:36,482 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2021-10-07 15:59:36,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:59:36,632 INFO L225 Difference]: With dead ends: 5727 [2021-10-07 15:59:36,632 INFO L226 Difference]: Without dead ends: 5727 [2021-10-07 15:59:36,633 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 92.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:59:36,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5727 states. [2021-10-07 15:59:36,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5727 to 2870. [2021-10-07 15:59:36,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2870 states, 2196 states have (on average 4.644353369763206) internal successors, (10199), 2869 states have internal predecessors, (10199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:59:36,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2870 states to 2870 states and 10199 transitions. [2021-10-07 15:59:36,853 INFO L78 Accepts]: Start accepts. Automaton has 2870 states and 10199 transitions. Word has length 2 [2021-10-07 15:59:36,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:59:36,854 INFO L470 AbstractCegarLoop]: Abstraction has 2870 states and 10199 transitions. [2021-10-07 15:59:36,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:59:36,855 INFO L276 IsEmpty]: Start isEmpty. Operand 2870 states and 10199 transitions. [2021-10-07 15:59:36,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-07 15:59:36,856 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:59:36,857 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-07 15:59:36,872 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-07 15:59:37,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:59:37,075 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [thread1Err4REQUIRES_VIOLATION, thread1Err5REQUIRES_VIOLATION, thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION (and 47 more)] === [2021-10-07 15:59:37,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:59:37,077 INFO L82 PathProgramCache]: Analyzing trace with hash 38786805, now seen corresponding path program 1 times [2021-10-07 15:59:37,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:59:37,078 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2113649310] [2021-10-07 15:59:37,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:59:37,079 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:59:37,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:59:37,080 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:59:37,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-07 15:59:37,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:59:37,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 15:59:37,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:59:37,329 INFO L354 Elim1Store]: treesize reduction 92, result has 21.4 percent of original size [2021-10-07 15:59:37,330 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 42 treesize of output 52 [2021-10-07 15:59:37,618 INFO L354 Elim1Store]: treesize reduction 92, result has 26.4 percent of original size [2021-10-07 15:59:37,618 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 65 treesize of output 88 [2021-10-07 15:59:38,027 INFO L354 Elim1Store]: treesize reduction 135, result has 23.3 percent of original size [2021-10-07 15:59:38,028 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 110 treesize of output 139 [2021-10-07 15:59:38,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:59:38,935 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:59:39,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:59:39,009 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:59:39,009 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2113649310] [2021-10-07 15:59:39,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2113649310] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:59:39,009 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:59:39,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-10-07 15:59:39,010 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102662446] [2021-10-07 15:59:39,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-07 15:59:39,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:59:39,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-07 15:59:39,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-07 15:59:39,011 INFO L87 Difference]: Start difference. First operand 2870 states and 10199 transitions. Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:59:39,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:59:39,692 INFO L93 Difference]: Finished difference Result 2309 states and 7956 transitions. [2021-10-07 15:59:39,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:59:39,693 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-07 15:59:39,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:59:39,721 INFO L225 Difference]: With dead ends: 2309 [2021-10-07 15:59:39,721 INFO L226 Difference]: Without dead ends: 2309 [2021-10-07 15:59:39,722 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 858.9ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-07 15:59:39,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2309 states. [2021-10-07 15:59:39,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2309 to 2309. [2021-10-07 15:59:39,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2309 states, 1811 states have (on average 4.393152954168968) internal successors, (7956), 2308 states have internal predecessors, (7956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:59:39,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2309 states to 2309 states and 7956 transitions. [2021-10-07 15:59:39,819 INFO L78 Accepts]: Start accepts. Automaton has 2309 states and 7956 transitions. Word has length 4 [2021-10-07 15:59:39,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:59:39,819 INFO L470 AbstractCegarLoop]: Abstraction has 2309 states and 7956 transitions. [2021-10-07 15:59:39,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:59:39,820 INFO L276 IsEmpty]: Start isEmpty. Operand 2309 states and 7956 transitions. [2021-10-07 15:59:39,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-07 15:59:39,820 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:59:39,821 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-07 15:59:39,833 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 15:59:40,033 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 15:59:40,033 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [thread1Err4REQUIRES_VIOLATION, thread1Err5REQUIRES_VIOLATION, thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION (and 47 more)] === [2021-10-07 15:59:40,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:59:40,040 INFO L82 PathProgramCache]: Analyzing trace with hash 38786806, now seen corresponding path program 1 times [2021-10-07 15:59:40,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:59:40,042 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1920979087] [2021-10-07 15:59:40,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:59:40,042 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:59:40,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:59:40,043 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 15:59:40,077 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 15:59:40,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:59:40,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-07 15:59:40,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:59:40,502 INFO L354 Elim1Store]: treesize reduction 233, result has 21.3 percent of original size [2021-10-07 15:59:40,502 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 47 treesize of output 93 [2021-10-07 15:59:40,541 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-07 15:59:40,542 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 96 treesize of output 92 [2021-10-07 15:59:42,227 INFO L354 Elim1Store]: treesize reduction 84, result has 36.8 percent of original size [2021-10-07 15:59:42,228 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 57 treesize of output 96 [2021-10-07 15:59:48,480 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:59:48,480 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1920979087] [2021-10-07 15:59:48,481 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-10-07 15:59:48,481 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1407727567] [2021-10-07 15:59:48,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:59:48,482 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-07 15:59:48,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 [2021-10-07 15:59:48,484 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-07 15:59:48,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2021-10-07 15:59:48,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:59:48,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-07 15:59:48,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:59:48,967 INFO L354 Elim1Store]: treesize reduction 233, result has 21.3 percent of original size [2021-10-07 15:59:48,967 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 47 treesize of output 93 [2021-10-07 15:59:48,977 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-07 15:59:48,978 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 96 treesize of output 92 [2021-10-07 15:59:50,578 INFO L354 Elim1Store]: treesize reduction 84, result has 36.8 percent of original size [2021-10-07 15:59:50,579 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 16:00:02,224 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-10-07 16:00:02,224 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627001468] [2021-10-07 16:00:02,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:00:02,225 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 16:00:02,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 16:00:02,227 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 16:00:02,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-07 16:00:02,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:00:02,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 16:00:02,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:00:02,619 INFO L354 Elim1Store]: treesize reduction 241, result has 18.6 percent of original size [2021-10-07 16:00:02,620 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 73 treesize of output 111 [2021-10-07 16:00:02,714 INFO L354 Elim1Store]: treesize reduction 108, result has 18.8 percent of original size [2021-10-07 16:00:02,715 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 8 case distinctions, treesize of input 117 treesize of output 125 [2021-10-07 16:00:03,185 INFO L354 Elim1Store]: treesize reduction 112, result has 15.8 percent of original size [2021-10-07 16:00:03,185 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 104 treesize of output 115 [2021-10-07 16:00:03,288 INFO L354 Elim1Store]: treesize reduction 108, result has 31.2 percent of original size [2021-10-07 16:00:03,289 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 103 treesize of output 140 [2021-10-07 16:00:04,155 INFO L354 Elim1Store]: treesize reduction 160, result has 14.0 percent of original size [2021-10-07 16:00:04,156 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 151 treesize of output 165 [2021-10-07 16:00:04,254 INFO L354 Elim1Store]: treesize reduction 100, result has 17.4 percent of original size [2021-10-07 16:00:04,255 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 150 treesize of output 158 [2021-10-07 16:00:09,132 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 16:00:09,132 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:00:13,538 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 16:00:13,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [627001468] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:00:13,538 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:00:13,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-10-07 16:00:13,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852543988] [2021-10-07 16:00:13,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 16:00:13,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:00:13,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 16:00:13,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=71, Unknown=6, NotChecked=0, Total=110 [2021-10-07 16:00:13,540 INFO L87 Difference]: Start difference. First operand 2309 states and 7956 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 16:00:30,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:00:30,555 INFO L93 Difference]: Finished difference Result 3488 states and 11413 transitions. [2021-10-07 16:00:30,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-07 16:00:30,555 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 16:00:30,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:00:30,590 INFO L225 Difference]: With dead ends: 3488 [2021-10-07 16:00:30,590 INFO L226 Difference]: Without dead ends: 3488 [2021-10-07 16:00:30,591 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 17056.7ms TimeCoverageRelationStatistics Valid=49, Invalid=101, Unknown=6, NotChecked=0, Total=156 [2021-10-07 16:00:30,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3488 states. [2021-10-07 16:00:30,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3488 to 1748. [2021-10-07 16:00:30,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1748 states, 1426 states have (on average 4.006311360448808) internal successors, (5713), 1747 states have internal predecessors, (5713), 0 states have call successors, (0), 0 states 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 16:00:30,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1748 states to 1748 states and 5713 transitions. [2021-10-07 16:00:30,675 INFO L78 Accepts]: Start accepts. Automaton has 1748 states and 5713 transitions. Word has length 4 [2021-10-07 16:00:30,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:00:30,675 INFO L470 AbstractCegarLoop]: Abstraction has 1748 states and 5713 transitions. [2021-10-07 16:00:30,676 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 16:00:30,676 INFO L276 IsEmpty]: Start isEmpty. Operand 1748 states and 5713 transitions. [2021-10-07 16:00:30,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-07 16:00:30,676 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:00:30,677 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1] [2021-10-07 16:00:30,687 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2021-10-07 16:00:30,897 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-10-07 16:00:31,114 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-07 16:00:31,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,5 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3,7 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 16:00:31,287 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err4REQUIRES_VIOLATION, thread1Err5REQUIRES_VIOLATION, thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION (and 47 more)] === [2021-10-07 16:00:31,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:00:31,289 INFO L82 PathProgramCache]: Analyzing trace with hash 38708290, now seen corresponding path program 1 times [2021-10-07 16:00:31,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:00:31,290 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1628764742] [2021-10-07 16:00:31,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:00:31,290 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:00:31,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:00:31,291 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 16:00:31,292 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 16:00:31,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:00:31,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-07 16:00:31,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:00:31,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:00:31,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:00:31,754 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-07 16:00:31,754 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 74 [2021-10-07 16:00:31,899 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 16:00:31,899 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:00:32,328 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 16:00:32,328 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:00:32,329 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1628764742] [2021-10-07 16:00:32,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1628764742] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:00:32,329 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:00:32,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-07 16:00:32,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050621555] [2021-10-07 16:00:32,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 16:00:32,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:00:32,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 16:00:32,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-07 16:00:32,330 INFO L87 Difference]: Start difference. First operand 1748 states and 5713 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 16:00:41,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:00:41,675 INFO L93 Difference]: Finished difference Result 10434 states and 34190 transitions. [2021-10-07 16:00:41,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-07 16:00:41,676 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 16:00:41,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:00:41,741 INFO L225 Difference]: With dead ends: 10434 [2021-10-07 16:00:41,741 INFO L226 Difference]: Without dead ends: 10434 [2021-10-07 16:00:41,741 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 793.7ms TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-10-07 16:00:41,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10434 states. [2021-10-07 16:00:41,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10434 to 1759. [2021-10-07 16:00:41,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1759 states, 1437 states have (on average 3.990953375086987) internal successors, (5735), 1758 states have internal predecessors, (5735), 0 states have call successors, (0), 0 states 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 16:00:41,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1759 states to 1759 states and 5735 transitions. [2021-10-07 16:00:41,960 INFO L78 Accepts]: Start accepts. Automaton has 1759 states and 5735 transitions. Word has length 4 [2021-10-07 16:00:41,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:00:41,960 INFO L470 AbstractCegarLoop]: Abstraction has 1759 states and 5735 transitions. [2021-10-07 16:00:41,961 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 16:00:41,961 INFO L276 IsEmpty]: Start isEmpty. Operand 1759 states and 5735 transitions. [2021-10-07 16:00:41,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-07 16:00:41,961 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:00:41,961 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-07 16:00:41,976 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 16:00:42,176 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 16:00:42,177 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [thread1Err4REQUIRES_VIOLATION, thread1Err5REQUIRES_VIOLATION, thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION (and 47 more)] === [2021-10-07 16:00:42,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:00:42,178 INFO L82 PathProgramCache]: Analyzing trace with hash -1380554086, now seen corresponding path program 1 times [2021-10-07 16:00:42,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:00:42,179 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1272029238] [2021-10-07 16:00:42,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:00:42,180 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:00:42,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:00:42,181 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 16:00:42,183 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 16:00:42,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:00:42,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 16:00:42,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:00:42,394 INFO L354 Elim1Store]: treesize reduction 84, result has 22.9 percent of original size [2021-10-07 16:00:42,394 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 32 treesize of output 44 [2021-10-07 16:00:42,548 INFO L354 Elim1Store]: treesize reduction 30, result has 36.2 percent of original size [2021-10-07 16:00:42,549 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 45 [2021-10-07 16:00:42,712 INFO L354 Elim1Store]: treesize reduction 57, result has 30.5 percent of original size [2021-10-07 16:00:42,713 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 52 treesize of output 69 [2021-10-07 16:00:43,003 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 16:00:43,004 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:00:43,094 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 16:00:43,095 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:00:43,095 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1272029238] [2021-10-07 16:00:43,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1272029238] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:00:43,095 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:00:43,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-10-07 16:00:43,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721923071] [2021-10-07 16:00:43,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-07 16:00:43,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:00:43,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-07 16:00:43,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-07 16:00:43,097 INFO L87 Difference]: Start difference. First operand 1759 states and 5735 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:00:43,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:00:43,623 INFO L93 Difference]: Finished difference Result 1693 states and 5547 transitions. [2021-10-07 16:00:43,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 16:00:43,624 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-07 16:00:43,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:00:43,652 INFO L225 Difference]: With dead ends: 1693 [2021-10-07 16:00:43,652 INFO L226 Difference]: Without dead ends: 1693 [2021-10-07 16:00:43,652 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 213.9ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-07 16:00:43,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1693 states. [2021-10-07 16:00:43,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1693 to 1693. [2021-10-07 16:00:43,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1693 states, 1403 states have (on average 3.9536707056307914) internal successors, (5547), 1692 states have internal predecessors, (5547), 0 states have call successors, (0), 0 states 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 16:00:43,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1693 states to 1693 states and 5547 transitions. [2021-10-07 16:00:43,707 INFO L78 Accepts]: Start accepts. Automaton has 1693 states and 5547 transitions. Word has length 6 [2021-10-07 16:00:43,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:00:43,708 INFO L470 AbstractCegarLoop]: Abstraction has 1693 states and 5547 transitions. [2021-10-07 16:00:43,708 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:00:43,708 INFO L276 IsEmpty]: Start isEmpty. Operand 1693 states and 5547 transitions. [2021-10-07 16:00:43,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-07 16:00:43,709 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:00:43,709 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-07 16:00:43,725 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 16:00:43,925 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 16:00:43,925 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [thread1Err4REQUIRES_VIOLATION, thread1Err5REQUIRES_VIOLATION, thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION (and 47 more)] === [2021-10-07 16:00:43,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:00:43,926 INFO L82 PathProgramCache]: Analyzing trace with hash -1380554085, now seen corresponding path program 1 times [2021-10-07 16:00:43,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:00:43,927 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [402747641] [2021-10-07 16:00:43,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:00:43,927 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:00:43,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:00:43,928 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 16:00:43,963 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 16:00:44,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:00:44,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 16:00:44,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:00:44,514 INFO L354 Elim1Store]: treesize reduction 233, result has 21.3 percent of original size [2021-10-07 16:00:44,514 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 38 treesize of output 84 [2021-10-07 16:00:44,521 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 86 treesize of output 84 [2021-10-07 16:00:45,830 INFO L354 Elim1Store]: treesize reduction 84, result has 36.8 percent of original size [2021-10-07 16:00:45,831 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 16:00:55,713 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:00:55,713 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [402747641] [2021-10-07 16:00:55,713 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-10-07 16:00:55,714 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [86738970] [2021-10-07 16:00:55,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:00:55,714 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-07 16:00:55,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 [2021-10-07 16:00:55,715 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-07 16:00:55,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-10-07 16:00:55,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:00:55,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 16:00:55,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:00:56,290 INFO L354 Elim1Store]: treesize reduction 233, result has 21.3 percent of original size [2021-10-07 16:00:56,290 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 38 treesize of output 84 [2021-10-07 16:00:56,297 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 86 treesize of output 84 [2021-10-07 16:00:57,417 INFO L354 Elim1Store]: treesize reduction 84, result has 36.8 percent of original size [2021-10-07 16:00:57,417 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 16:01:12,058 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-10-07 16:01:12,058 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1406806744] [2021-10-07 16:01:12,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:01:12,060 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 16:01:12,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 16:01:12,062 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 16:01:12,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-07 16:01:12,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:01:12,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-07 16:01:12,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:01:12,498 INFO L354 Elim1Store]: treesize reduction 241, result has 18.6 percent of original size [2021-10-07 16:01:12,498 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 64 treesize of output 102 [2021-10-07 16:01:12,568 INFO L354 Elim1Store]: treesize reduction 92, result has 21.4 percent of original size [2021-10-07 16:01:12,568 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 5 case distinctions, treesize of input 107 treesize of output 117 [2021-10-07 16:01:13,006 INFO L354 Elim1Store]: treesize reduction 112, result has 15.8 percent of original size [2021-10-07 16:01:13,006 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 101 treesize of output 112 [2021-10-07 16:01:13,109 INFO L354 Elim1Store]: treesize reduction 108, result has 31.2 percent of original size [2021-10-07 16:01:13,109 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 100 treesize of output 137 [2021-10-07 16:01:13,822 INFO L354 Elim1Store]: treesize reduction 160, result has 14.0 percent of original size [2021-10-07 16:01:13,823 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 148 treesize of output 162 [2021-10-07 16:01:13,909 INFO L354 Elim1Store]: treesize reduction 100, result has 17.4 percent of original size [2021-10-07 16:01:13,910 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 147 treesize of output 155 [2021-10-07 16:01:23,773 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 16:01:23,774 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:01:26,249 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 16:01:26,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1406806744] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:01:26,250 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:01:26,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-10-07 16:01:26,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354839005] [2021-10-07 16:01:26,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 16:01:26,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:01:26,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 16:01:26,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=68, Unknown=10, NotChecked=0, Total=110 [2021-10-07 16:01:26,251 INFO L87 Difference]: Start difference. First operand 1693 states and 5547 transitions. Second operand has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:01:34,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:01:34,631 INFO L93 Difference]: Finished difference Result 1627 states and 5359 transitions. [2021-10-07 16:01:34,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 16:01:34,633 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-07 16:01:34,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:01:34,641 INFO L225 Difference]: With dead ends: 1627 [2021-10-07 16:01:34,641 INFO L226 Difference]: Without dead ends: 1627 [2021-10-07 16:01:34,641 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 23557.0ms TimeCoverageRelationStatistics Valid=40, Invalid=82, Unknown=10, NotChecked=0, Total=132 [2021-10-07 16:01:34,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1627 states. [2021-10-07 16:01:34,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1627 to 1627. [2021-10-07 16:01:34,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1627 states, 1369 states have (on average 3.914536157779401) internal successors, (5359), 1626 states have internal predecessors, (5359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:01:34,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1627 states to 1627 states and 5359 transitions. [2021-10-07 16:01:34,692 INFO L78 Accepts]: Start accepts. Automaton has 1627 states and 5359 transitions. Word has length 6 [2021-10-07 16:01:34,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:01:34,692 INFO L470 AbstractCegarLoop]: Abstraction has 1627 states and 5359 transitions. [2021-10-07 16:01:34,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:01:34,692 INFO L276 IsEmpty]: Start isEmpty. Operand 1627 states and 5359 transitions. [2021-10-07 16:01:34,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-07 16:01:34,693 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:01:34,693 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:01:34,709 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 16:01:34,910 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-10-07 16:01:35,132 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-10-07 16:01:35,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3,11 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,12 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 16:01:35,306 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err4REQUIRES_VIOLATION, thread1Err5REQUIRES_VIOLATION, thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION (and 47 more)] === [2021-10-07 16:01:35,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:01:35,308 INFO L82 PathProgramCache]: Analyzing trace with hash 152496279, now seen corresponding path program 1 times [2021-10-07 16:01:35,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:01:35,308 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [711587321] [2021-10-07 16:01:35,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:01:35,309 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:01:35,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:01:35,310 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 16:01:35,312 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 16:01:35,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:01:35,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 16:01:35,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:01:35,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:01:35,539 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:01:35,582 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 16:01:35,583 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:01:35,583 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [711587321] [2021-10-07 16:01:35,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [711587321] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:01:35,583 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:01:35,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-10-07 16:01:35,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604272400] [2021-10-07 16:01:35,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-07 16:01:35,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:01:35,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-07 16:01:35,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-07 16:01:35,586 INFO L87 Difference]: Start difference. First operand 1627 states and 5359 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:01:35,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:01:35,884 INFO L93 Difference]: Finished difference Result 1719 states and 5566 transitions. [2021-10-07 16:01:35,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 16:01:35,885 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-07 16:01:35,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:01:35,893 INFO L225 Difference]: With dead ends: 1719 [2021-10-07 16:01:35,893 INFO L226 Difference]: Without dead ends: 1711 [2021-10-07 16:01:35,893 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 34.7ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-07 16:01:35,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1711 states. [2021-10-07 16:01:35,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1711 to 1709. [2021-10-07 16:01:35,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1709 states, 1445 states have (on average 3.8380622837370244) internal successors, (5546), 1708 states have internal predecessors, (5546), 0 states have call successors, (0), 0 states 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 16:01:35,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1709 states to 1709 states and 5546 transitions. [2021-10-07 16:01:35,975 INFO L78 Accepts]: Start accepts. Automaton has 1709 states and 5546 transitions. Word has length 7 [2021-10-07 16:01:35,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:01:35,976 INFO L470 AbstractCegarLoop]: Abstraction has 1709 states and 5546 transitions. [2021-10-07 16:01:35,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:01:35,976 INFO L276 IsEmpty]: Start isEmpty. Operand 1709 states and 5546 transitions. [2021-10-07 16:01:35,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-07 16:01:35,977 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:01:35,977 INFO L512 BasicCegarLoop]: trace histogram [5, 1, 1, 1] [2021-10-07 16:01:35,992 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-10-07 16:01:36,189 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 16:01:36,190 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [thread1Err4REQUIRES_VIOLATION, thread1Err5REQUIRES_VIOLATION, thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION (and 47 more)] === [2021-10-07 16:01:36,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:01:36,190 INFO L82 PathProgramCache]: Analyzing trace with hash -1088686608, now seen corresponding path program 1 times [2021-10-07 16:01:36,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:01:36,191 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [381474432] [2021-10-07 16:01:36,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:01:36,192 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:01:36,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:01:36,193 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 16:01:36,194 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 16:01:36,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:01:36,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-07 16:01:36,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:01:36,354 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 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 16:01:36,591 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:01:36,591 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:01:37,927 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:01:37,927 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:01:37,927 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [381474432] [2021-10-07 16:01:37,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [381474432] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:01:37,928 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:01:37,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-07 16:01:37,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069313750] [2021-10-07 16:01:37,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 16:01:37,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:01:37,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 16:01:37,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2021-10-07 16:01:37,929 INFO L87 Difference]: Start difference. First operand 1709 states and 5546 transitions. Second operand has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:02:13,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:02:13,058 INFO L93 Difference]: Finished difference Result 16784 states and 54866 transitions. [2021-10-07 16:02:13,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-07 16:02:13,059 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-07 16:02:13,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:02:13,133 INFO L225 Difference]: With dead ends: 16784 [2021-10-07 16:02:13,134 INFO L226 Difference]: Without dead ends: 16784 [2021-10-07 16:02:13,134 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 5241.7ms TimeCoverageRelationStatistics Valid=159, Invalid=261, Unknown=0, NotChecked=0, Total=420 [2021-10-07 16:02:13,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16784 states. [2021-10-07 16:02:13,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16784 to 1735. [2021-10-07 16:02:13,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1735 states, 1471 states have (on average 3.80693405846363) internal successors, (5600), 1734 states have internal predecessors, (5600), 0 states have call successors, (0), 0 states 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 16:02:13,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1735 states to 1735 states and 5600 transitions. [2021-10-07 16:02:13,401 INFO L78 Accepts]: Start accepts. Automaton has 1735 states and 5600 transitions. Word has length 8 [2021-10-07 16:02:13,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:02:13,402 INFO L470 AbstractCegarLoop]: Abstraction has 1735 states and 5600 transitions. [2021-10-07 16:02:13,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:02:13,402 INFO L276 IsEmpty]: Start isEmpty. Operand 1735 states and 5600 transitions. [2021-10-07 16:02:13,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-07 16:02:13,404 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:02:13,404 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:02:13,417 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 16:02:13,616 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 16:02:13,617 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [thread1Err4REQUIRES_VIOLATION, thread1Err5REQUIRES_VIOLATION, thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION (and 47 more)] === [2021-10-07 16:02:13,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:02:13,618 INFO L82 PathProgramCache]: Analyzing trace with hash 432447053, now seen corresponding path program 1 times [2021-10-07 16:02:13,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:02:13,619 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [647632648] [2021-10-07 16:02:13,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:02:13,620 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:02:13,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:02:13,621 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 16:02:13,676 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 16:02:13,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:02:13,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 16:02:13,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:02:14,240 INFO L354 Elim1Store]: treesize reduction 241, result has 18.6 percent of original size [2021-10-07 16:02:14,241 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 38 treesize of output 76 [2021-10-07 16:02:14,252 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 79 treesize of output 77 [2021-10-07 16:02:15,096 INFO L354 Elim1Store]: treesize reduction 100, result has 24.8 percent of original size [2021-10-07 16:02:15,096 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 46 treesize of output 69 [2021-10-07 16:02:17,358 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:02:17,358 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [647632648] [2021-10-07 16:02:17,358 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-10-07 16:02:17,359 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1467896194] [2021-10-07 16:02:17,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:02:17,359 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-07 16:02:17,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 [2021-10-07 16:02:17,364 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-07 16:02:17,367 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2021-10-07 16:02:17,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:02:17,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 16:02:17,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:02:17,985 INFO L354 Elim1Store]: treesize reduction 233, result has 21.3 percent of original size [2021-10-07 16:02:17,986 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 27 treesize of output 73 [2021-10-07 16:02:20,163 INFO L354 Elim1Store]: treesize reduction 36, result has 29.4 percent of original size [2021-10-07 16:02:20,163 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 36 [2021-10-07 16:02:20,283 INFO L354 Elim1Store]: treesize reduction 36, result has 29.4 percent of original size [2021-10-07 16:02:20,283 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 30 treesize of output 39 [2021-10-07 16:02:22,642 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 16:02:22,642 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:02:23,224 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 16:02:23,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1467896194] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:02:23,224 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:02:23,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-10-07 16:02:23,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162079300] [2021-10-07 16:02:23,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-07 16:02:23,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:02:23,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-07 16:02:23,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=30, Unknown=1, NotChecked=0, Total=56 [2021-10-07 16:02:23,225 INFO L87 Difference]: Start difference. First operand 1735 states and 5600 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:02:26,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:02:26,075 INFO L93 Difference]: Finished difference Result 1644 states and 5338 transitions. [2021-10-07 16:02:26,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 16:02:26,076 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-07 16:02:26,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:02:26,082 INFO L225 Difference]: With dead ends: 1644 [2021-10-07 16:02:26,083 INFO L226 Difference]: Without dead ends: 1644 [2021-10-07 16:02:26,083 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 4875.7ms TimeCoverageRelationStatistics Valid=25, Invalid=30, Unknown=1, NotChecked=0, Total=56 [2021-10-07 16:02:26,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1644 states. [2021-10-07 16:02:26,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1644 to 1644. [2021-10-07 16:02:26,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1644 states, 1421 states have (on average 3.7565095003518647) internal successors, (5338), 1643 states have internal predecessors, (5338), 0 states have call successors, (0), 0 states 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 16:02:26,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1644 states to 1644 states and 5338 transitions. [2021-10-07 16:02:26,141 INFO L78 Accepts]: Start accepts. Automaton has 1644 states and 5338 transitions. Word has length 8 [2021-10-07 16:02:26,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:02:26,142 INFO L470 AbstractCegarLoop]: Abstraction has 1644 states and 5338 transitions. [2021-10-07 16:02:26,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:02:26,142 INFO L276 IsEmpty]: Start isEmpty. Operand 1644 states and 5338 transitions. [2021-10-07 16:02:26,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-07 16:02:26,143 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:02:26,143 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:02:26,159 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-07 16:02:26,362 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2021-10-07 16:02:26,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3,16 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2021-10-07 16:02:26,557 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [thread1Err4REQUIRES_VIOLATION, thread1Err5REQUIRES_VIOLATION, thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION (and 47 more)] === [2021-10-07 16:02:26,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:02:26,559 INFO L82 PathProgramCache]: Analyzing trace with hash 432447054, now seen corresponding path program 1 times [2021-10-07 16:02:26,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:02:26,560 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1816238907] [2021-10-07 16:02:26,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:02:26,560 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:02:26,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:02:26,561 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 16:02:26,562 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 16:02:26,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:02:26,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-07 16:02:26,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:02:26,833 INFO L354 Elim1Store]: treesize reduction 84, result has 22.9 percent of original size [2021-10-07 16:02:26,834 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 33 treesize of output 45 [2021-10-07 16:02:27,017 INFO L354 Elim1Store]: treesize reduction 92, result has 26.4 percent of original size [2021-10-07 16:02:27,018 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 60 treesize of output 83 [2021-10-07 16:02:27,252 INFO L354 Elim1Store]: treesize reduction 30, result has 36.2 percent of original size [2021-10-07 16:02:27,253 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 40 treesize of output 51 [2021-10-07 16:02:27,565 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 16:02:27,565 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:02:27,647 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 16:02:27,648 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:02:27,648 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1816238907] [2021-10-07 16:02:27,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1816238907] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:02:27,648 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:02:27,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-10-07 16:02:27,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992515078] [2021-10-07 16:02:27,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-07 16:02:27,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:02:27,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-07 16:02:27,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-07 16:02:27,650 INFO L87 Difference]: Start difference. First operand 1644 states and 5338 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:02:28,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:02:28,037 INFO L93 Difference]: Finished difference Result 1553 states and 5076 transitions. [2021-10-07 16:02:28,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 16:02:28,038 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-07 16:02:28,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:02:28,045 INFO L225 Difference]: With dead ends: 1553 [2021-10-07 16:02:28,045 INFO L226 Difference]: Without dead ends: 1553 [2021-10-07 16:02:28,045 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 265.0ms TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2021-10-07 16:02:28,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1553 states. [2021-10-07 16:02:28,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1553 to 1553. [2021-10-07 16:02:28,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1553 states, 1371 states have (on average 3.702407002188184) internal successors, (5076), 1552 states have internal predecessors, (5076), 0 states have call successors, (0), 0 states 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 16:02:28,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1553 states to 1553 states and 5076 transitions. [2021-10-07 16:02:28,089 INFO L78 Accepts]: Start accepts. Automaton has 1553 states and 5076 transitions. Word has length 8 [2021-10-07 16:02:28,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:02:28,090 INFO L470 AbstractCegarLoop]: Abstraction has 1553 states and 5076 transitions. [2021-10-07 16:02:28,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:02:28,090 INFO L276 IsEmpty]: Start isEmpty. Operand 1553 states and 5076 transitions. [2021-10-07 16:02:28,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-07 16:02:28,091 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:02:28,091 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:02:28,105 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-07 16:02:28,304 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 16:02:28,305 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err4REQUIRES_VIOLATION, thread1Err5REQUIRES_VIOLATION, thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION (and 47 more)] === [2021-10-07 16:02:28,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:02:28,306 INFO L82 PathProgramCache]: Analyzing trace with hash -915587621, now seen corresponding path program 1 times [2021-10-07 16:02:28,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:02:28,307 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [282909044] [2021-10-07 16:02:28,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:02:28,308 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:02:28,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:02:28,309 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 16:02:28,310 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 16:02:28,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:02:28,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-07 16:02:28,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:02:28,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:02:28,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:02:28,803 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-07 16:02:28,803 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 39 treesize of output 89 [2021-10-07 16:02:28,889 INFO L354 Elim1Store]: treesize reduction 84, result has 22.9 percent of original size [2021-10-07 16:02:28,890 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 16:02:29,072 INFO L354 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2021-10-07 16:02:29,072 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 38 [2021-10-07 16:02:29,099 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-07 16:02:29,100 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 35 treesize of output 42 [2021-10-07 16:02:29,220 INFO L354 Elim1Store]: treesize reduction 40, result has 21.6 percent of original size [2021-10-07 16:02:29,221 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 52 treesize of output 57 [2021-10-07 16:02:29,245 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-10-07 16:02:29,246 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 53 [2021-10-07 16:02:31,661 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:02:31,661 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:02:35,293 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:02:35,293 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:02:35,293 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [282909044] [2021-10-07 16:02:35,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [282909044] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:02:35,294 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:02:35,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-10-07 16:02:35,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613496880] [2021-10-07 16:02:35,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 16:02:35,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:02:35,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 16:02:35,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-10-07 16:02:35,295 INFO L87 Difference]: Start difference. First operand 1553 states and 5076 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 16:02:42,144 WARN L207 SmtUtils]: Spent 6.70 s on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2021-10-07 16:03:33,655 WARN L207 SmtUtils]: Spent 9.82 s on a formula simplification. DAG size of input: 88 DAG size of output: 87 [2021-10-07 16:03:47,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:03:47,132 INFO L93 Difference]: Finished difference Result 3749 states and 12212 transitions. [2021-10-07 16:03:47,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-07 16:03:47,134 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 8 [2021-10-07 16:03:47,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:03:47,148 INFO L225 Difference]: With dead ends: 3749 [2021-10-07 16:03:47,148 INFO L226 Difference]: Without dead ends: 3749 [2021-10-07 16:03:47,148 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 44028.9ms TimeCoverageRelationStatistics Valid=146, Invalid=402, Unknown=4, NotChecked=0, Total=552 [2021-10-07 16:03:47,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3749 states. [2021-10-07 16:03:47,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3749 to 2065. [2021-10-07 16:03:47,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2065 states, 1883 states have (on average 3.7679235262878388) internal successors, (7095), 2064 states have internal predecessors, (7095), 0 states have call successors, (0), 0 states 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 16:03:47,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2065 states to 2065 states and 7095 transitions. [2021-10-07 16:03:47,226 INFO L78 Accepts]: Start accepts. Automaton has 2065 states and 7095 transitions. Word has length 8 [2021-10-07 16:03:47,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:03:47,226 INFO L470 AbstractCegarLoop]: Abstraction has 2065 states and 7095 transitions. [2021-10-07 16:03:47,226 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 16:03:47,226 INFO L276 IsEmpty]: Start isEmpty. Operand 2065 states and 7095 transitions. [2021-10-07 16:03:47,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-07 16:03:47,227 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:03:47,227 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:03:47,241 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 16:03:47,441 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 16:03:47,441 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err2REQUIRES_VIOLATION === [thread1Err4REQUIRES_VIOLATION, thread1Err5REQUIRES_VIOLATION, thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION (and 47 more)] === [2021-10-07 16:03:47,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:03:47,442 INFO L82 PathProgramCache]: Analyzing trace with hash -915587487, now seen corresponding path program 1 times [2021-10-07 16:03:47,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:03:47,443 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [857741177] [2021-10-07 16:03:47,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:03:47,443 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:03:47,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:03:47,444 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 16:03:47,481 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 16:03:47,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:03:47,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 16:03:47,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:03:47,685 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 16:03:47,718 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 16:03:47,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:03:47,743 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 16:03:47,743 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:03:47,743 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [857741177] [2021-10-07 16:03:47,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [857741177] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:03:47,743 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:03:47,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-07 16:03:47,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919149922] [2021-10-07 16:03:47,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 16:03:47,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:03:47,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 16:03:47,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:03:47,745 INFO L87 Difference]: Start difference. First operand 2065 states and 7095 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 16:03:48,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:03:48,080 INFO L93 Difference]: Finished difference Result 1661 states and 5594 transitions. [2021-10-07 16:03:48,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 16:03:48,081 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 16:03:48,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:03:48,085 INFO L225 Difference]: With dead ends: 1661 [2021-10-07 16:03:48,085 INFO L226 Difference]: Without dead ends: 1661 [2021-10-07 16:03:48,086 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-07 16:03:48,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1661 states. [2021-10-07 16:03:48,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1661 to 1661. [2021-10-07 16:03:48,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1661 states, 1535 states have (on average 3.644299674267101) internal successors, (5594), 1660 states have internal predecessors, (5594), 0 states have call successors, (0), 0 states 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 16:03:48,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1661 states to 1661 states and 5594 transitions. [2021-10-07 16:03:48,131 INFO L78 Accepts]: Start accepts. Automaton has 1661 states and 5594 transitions. Word has length 8 [2021-10-07 16:03:48,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:03:48,131 INFO L470 AbstractCegarLoop]: Abstraction has 1661 states and 5594 transitions. [2021-10-07 16:03:48,131 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 16:03:48,131 INFO L276 IsEmpty]: Start isEmpty. Operand 1661 states and 5594 transitions. [2021-10-07 16:03:48,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-07 16:03:48,132 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:03:48,132 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:03:48,150 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 16:03:48,347 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 16:03:48,348 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err3REQUIRES_VIOLATION === [thread1Err4REQUIRES_VIOLATION, thread1Err5REQUIRES_VIOLATION, thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION (and 47 more)] === [2021-10-07 16:03:48,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:03:48,349 INFO L82 PathProgramCache]: Analyzing trace with hash -915587486, now seen corresponding path program 1 times [2021-10-07 16:03:48,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:03:48,350 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1680544337] [2021-10-07 16:03:48,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:03:48,351 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:03:48,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:03:48,352 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 16:03:48,356 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 16:03:48,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:03:48,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 16:03:48,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:03:48,578 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 16:03:48,578 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:03:48,643 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 16:03:48,644 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:03:48,644 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1680544337] [2021-10-07 16:03:48,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1680544337] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:03:48,644 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:03:48,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-07 16:03:48,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306946391] [2021-10-07 16:03:48,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 16:03:48,645 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:03:48,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 16:03:48,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:03:48,646 INFO L87 Difference]: Start difference. First operand 1661 states and 5594 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:03:48,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:03:48,767 INFO L93 Difference]: Finished difference Result 2421 states and 8253 transitions. [2021-10-07 16:03:48,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 16:03:48,769 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-07 16:03:48,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:03:48,776 INFO L225 Difference]: With dead ends: 2421 [2021-10-07 16:03:48,776 INFO L226 Difference]: Without dead ends: 2421 [2021-10-07 16:03:48,776 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.2ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:03:48,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2421 states. [2021-10-07 16:03:48,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2421 to 1931. [2021-10-07 16:03:48,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1931 states, 1790 states have (on average 3.835754189944134) internal successors, (6866), 1930 states have internal predecessors, (6866), 0 states have call successors, (0), 0 states 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 16:03:48,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1931 states to 1931 states and 6866 transitions. [2021-10-07 16:03:48,866 INFO L78 Accepts]: Start accepts. Automaton has 1931 states and 6866 transitions. Word has length 8 [2021-10-07 16:03:48,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:03:48,867 INFO L470 AbstractCegarLoop]: Abstraction has 1931 states and 6866 transitions. [2021-10-07 16:03:48,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:03:48,867 INFO L276 IsEmpty]: Start isEmpty. Operand 1931 states and 6866 transitions. [2021-10-07 16:03:48,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-07 16:03:48,868 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:03:48,868 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:03:48,891 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 16:03:49,068 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 16:03:49,069 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err3REQUIRES_VIOLATION === [thread1Err4REQUIRES_VIOLATION, thread1Err5REQUIRES_VIOLATION, thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION (and 47 more)] === [2021-10-07 16:03:49,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:03:49,070 INFO L82 PathProgramCache]: Analyzing trace with hash 589506834, now seen corresponding path program 1 times [2021-10-07 16:03:49,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:03:49,071 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [464183724] [2021-10-07 16:03:49,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:03:49,072 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:03:49,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:03:49,073 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 16:03:49,074 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 16:03:49,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:03:49,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 16:03:49,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:03:49,307 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 16:03:49,307 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:03:49,386 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 16:03:49,386 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:03:49,386 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [464183724] [2021-10-07 16:03:49,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [464183724] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:03:49,387 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:03:49,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-07 16:03:49,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359554304] [2021-10-07 16:03:49,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 16:03:49,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:03:49,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 16:03:49,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:03:49,389 INFO L87 Difference]: Start difference. First operand 1931 states and 6866 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 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 16:03:49,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:03:49,552 INFO L93 Difference]: Finished difference Result 1615 states and 5388 transitions. [2021-10-07 16:03:49,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 16:03:49,553 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 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 10 [2021-10-07 16:03:49,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:03:49,557 INFO L225 Difference]: With dead ends: 1615 [2021-10-07 16:03:49,557 INFO L226 Difference]: Without dead ends: 1615 [2021-10-07 16:03:49,558 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:03:49,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1615 states. [2021-10-07 16:03:49,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1615 to 1615. [2021-10-07 16:03:49,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1615 states, 1458 states have (on average 3.6954732510288064) internal successors, (5388), 1614 states have internal predecessors, (5388), 0 states have call successors, (0), 0 states 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 16:03:49,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1615 states to 1615 states and 5388 transitions. [2021-10-07 16:03:49,600 INFO L78 Accepts]: Start accepts. Automaton has 1615 states and 5388 transitions. Word has length 10 [2021-10-07 16:03:49,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:03:49,600 INFO L470 AbstractCegarLoop]: Abstraction has 1615 states and 5388 transitions. [2021-10-07 16:03:49,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 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 16:03:49,600 INFO L276 IsEmpty]: Start isEmpty. Operand 1615 states and 5388 transitions. [2021-10-07 16:03:49,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-07 16:03:49,601 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:03:49,601 INFO L512 BasicCegarLoop]: trace histogram [8, 1, 1] [2021-10-07 16:03:49,615 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 16:03:49,814 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 16:03:49,815 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err4REQUIRES_VIOLATION, thread1Err5REQUIRES_VIOLATION, thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION (and 47 more)] === [2021-10-07 16:03:49,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:03:49,816 INFO L82 PathProgramCache]: Analyzing trace with hash -1933477182, now seen corresponding path program 2 times [2021-10-07 16:03:49,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:03:49,817 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [82346053] [2021-10-07 16:03:49,817 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 16:03:49,817 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:03:49,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:03:49,819 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 16:03:49,820 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 16:03:50,056 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 16:03:50,057 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:03:50,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-07 16:03:50,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:03:50,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:03:50,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:03:50,461 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-07 16:03:50,461 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 74 [2021-10-07 16:03:50,965 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:03:50,965 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:03:53,482 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:03:53,482 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:03:53,482 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [82346053] [2021-10-07 16:03:53,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [82346053] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:03:53,482 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:03:53,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-07 16:03:53,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861591124] [2021-10-07 16:03:53,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-07 16:03:53,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:03:53,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-07 16:03:53,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=262, Unknown=0, NotChecked=0, Total=380 [2021-10-07 16:03:53,484 INFO L87 Difference]: Start difference. First operand 1615 states and 5388 transitions. Second operand has 20 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 19 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 16:05:00,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:05:00,198 INFO L93 Difference]: Finished difference Result 23018 states and 78364 transitions. [2021-10-07 16:05:00,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-07 16:05:00,201 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 19 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 16:05:00,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:05:00,309 INFO L225 Difference]: With dead ends: 23018 [2021-10-07 16:05:00,310 INFO L226 Difference]: Without dead ends: 23018 [2021-10-07 16:05:00,310 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 13558.6ms TimeCoverageRelationStatistics Valid=335, Invalid=595, Unknown=0, NotChecked=0, Total=930 [2021-10-07 16:05:00,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23018 states. [2021-10-07 16:05:00,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23018 to 1637. [2021-10-07 16:05:00,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1637 states, 1480 states have (on average 3.674324324324324) internal successors, (5438), 1636 states have internal predecessors, (5438), 0 states have call successors, (0), 0 states 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 16:05:00,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1637 states to 1637 states and 5438 transitions. [2021-10-07 16:05:00,744 INFO L78 Accepts]: Start accepts. Automaton has 1637 states and 5438 transitions. Word has length 10 [2021-10-07 16:05:00,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:05:00,744 INFO L470 AbstractCegarLoop]: Abstraction has 1637 states and 5438 transitions. [2021-10-07 16:05:00,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 19 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 16:05:00,744 INFO L276 IsEmpty]: Start isEmpty. Operand 1637 states and 5438 transitions. [2021-10-07 16:05:00,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-07 16:05:00,748 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:05:00,748 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:05:00,775 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Ended with exit code 0 [2021-10-07 16:05:00,962 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 16:05:00,963 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting thread3Err0REQUIRES_VIOLATION === [thread1Err4REQUIRES_VIOLATION, thread1Err5REQUIRES_VIOLATION, thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION (and 47 more)] === [2021-10-07 16:05:00,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:05:00,964 INFO L82 PathProgramCache]: Analyzing trace with hash -1870744063, now seen corresponding path program 1 times [2021-10-07 16:05:00,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:05:00,965 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1030204992] [2021-10-07 16:05:00,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:05:00,965 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:05:00,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:05:00,967 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 16:05:00,968 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 16:05:01,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:05:01,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 16:05:01,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:05:01,244 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 16:05:01,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:05:01,328 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 16:05:01,328 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:05:01,329 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1030204992] [2021-10-07 16:05:01,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1030204992] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:05:01,329 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:05:01,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-07 16:05:01,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224695780] [2021-10-07 16:05:01,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 16:05:01,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:05:01,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 16:05:01,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:05:01,331 INFO L87 Difference]: Start difference. First operand 1637 states and 5438 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:05:01,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:05:01,534 INFO L93 Difference]: Finished difference Result 1417 states and 4422 transitions. [2021-10-07 16:05:01,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 16:05:01,537 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-07 16:05:01,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:05:01,541 INFO L225 Difference]: With dead ends: 1417 [2021-10-07 16:05:01,541 INFO L226 Difference]: Without dead ends: 1388 [2021-10-07 16:05:01,541 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:05:01,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1388 states. [2021-10-07 16:05:01,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1388 to 1376. [2021-10-07 16:05:01,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1376 states, 1226 states have (on average 3.539151712887439) internal successors, (4339), 1375 states have internal predecessors, (4339), 0 states have call successors, (0), 0 states 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 16:05:01,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1376 states to 1376 states and 4339 transitions. [2021-10-07 16:05:01,607 INFO L78 Accepts]: Start accepts. Automaton has 1376 states and 4339 transitions. Word has length 11 [2021-10-07 16:05:01,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:05:01,608 INFO L470 AbstractCegarLoop]: Abstraction has 1376 states and 4339 transitions. [2021-10-07 16:05:01,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:05:01,608 INFO L276 IsEmpty]: Start isEmpty. Operand 1376 states and 4339 transitions. [2021-10-07 16:05:01,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-07 16:05:01,609 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:05:01,609 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:05:01,627 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-10-07 16:05:01,822 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 16:05:01,823 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err4REQUIRES_VIOLATION, thread1Err5REQUIRES_VIOLATION, thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION (and 47 more)] === [2021-10-07 16:05:01,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:05:01,824 INFO L82 PathProgramCache]: Analyzing trace with hash -1767630441, now seen corresponding path program 2 times [2021-10-07 16:05:01,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:05:01,824 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [726555918] [2021-10-07 16:05:01,825 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 16:05:01,825 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:05:01,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:05:01,826 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 16:05:01,827 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 16:05:02,090 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 16:05:02,090 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:05:02,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-07 16:05:02,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:05:02,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:05:02,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:05:02,473 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-07 16:05:02,474 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 39 treesize of output 89 [2021-10-07 16:05:02,583 INFO L354 Elim1Store]: treesize reduction 84, result has 22.9 percent of original size [2021-10-07 16:05:02,584 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 16:05:02,773 INFO L354 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2021-10-07 16:05:02,773 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2021-10-07 16:05:02,808 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-07 16:05:02,809 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 43 [2021-10-07 16:05:02,936 INFO L354 Elim1Store]: treesize reduction 40, result has 21.6 percent of original size [2021-10-07 16:05:02,936 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 49 treesize of output 54 [2021-10-07 16:05:02,981 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-10-07 16:05:02,982 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 50 [2021-10-07 16:05:07,457 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-07 16:05:07,457 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:05:12,956 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-07 16:05:12,956 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:05:12,956 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [726555918] [2021-10-07 16:05:12,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [726555918] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:05:12,957 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:05:12,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-10-07 16:05:12,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808164217] [2021-10-07 16:05:12,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 16:05:12,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:05:12,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 16:05:12,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=38, Unknown=1, NotChecked=0, Total=56 [2021-10-07 16:05:12,958 INFO L87 Difference]: Start difference. First operand 1376 states and 4339 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:05:18,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:05:18,294 INFO L93 Difference]: Finished difference Result 872 states and 2723 transitions. [2021-10-07 16:05:18,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 16:05:18,295 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-07 16:05:18,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:05:18,297 INFO L225 Difference]: With dead ends: 872 [2021-10-07 16:05:18,297 INFO L226 Difference]: Without dead ends: 872 [2021-10-07 16:05:18,298 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 6402.8ms TimeCoverageRelationStatistics Valid=23, Invalid=48, Unknown=1, NotChecked=0, Total=72 [2021-10-07 16:05:18,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2021-10-07 16:05:18,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 548. [2021-10-07 16:05:18,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 508 states have (on average 3.0098425196850394) internal successors, (1529), 547 states have internal predecessors, (1529), 0 states have call successors, (0), 0 states 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 16:05:18,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 1529 transitions. [2021-10-07 16:05:18,310 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 1529 transitions. Word has length 11 [2021-10-07 16:05:18,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:05:18,310 INFO L470 AbstractCegarLoop]: Abstraction has 548 states and 1529 transitions. [2021-10-07 16:05:18,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:05:18,310 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 1529 transitions. [2021-10-07 16:05:18,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-07 16:05:18,311 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:05:18,311 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:05:18,323 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 16:05:18,519 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 16:05:18,520 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err3REQUIRES_VIOLATION === [thread1Err4REQUIRES_VIOLATION, thread1Err5REQUIRES_VIOLATION, thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION (and 47 more)] === [2021-10-07 16:05:18,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:05:18,521 INFO L82 PathProgramCache]: Analyzing trace with hash -238837981, now seen corresponding path program 1 times [2021-10-07 16:05:18,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:05:18,522 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [177158510] [2021-10-07 16:05:18,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:05:18,522 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:05:18,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:05:18,523 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 16:05:18,524 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 16:05:18,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:05:18,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 16:05:18,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:05:18,907 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 16:05:18,907 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:05:18,982 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 16:05:18,982 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:05:18,982 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [177158510] [2021-10-07 16:05:18,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [177158510] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:05:18,982 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:05:18,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-07 16:05:18,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006473783] [2021-10-07 16:05:18,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-07 16:05:18,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:05:18,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-07 16:05:18,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-07 16:05:18,984 INFO L87 Difference]: Start difference. First operand 548 states and 1529 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:05:19,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:05:19,209 INFO L93 Difference]: Finished difference Result 662 states and 1758 transitions. [2021-10-07 16:05:19,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 16:05:19,210 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-07 16:05:19,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:05:19,211 INFO L225 Difference]: With dead ends: 662 [2021-10-07 16:05:19,212 INFO L226 Difference]: Without dead ends: 581 [2021-10-07 16:05:19,212 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.1ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-07 16:05:19,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2021-10-07 16:05:19,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 548. [2021-10-07 16:05:19,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 508 states have (on average 3.0098425196850394) internal successors, (1529), 547 states have internal predecessors, (1529), 0 states have call successors, (0), 0 states 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 16:05:19,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 1529 transitions. [2021-10-07 16:05:19,225 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 1529 transitions. Word has length 12 [2021-10-07 16:05:19,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:05:19,226 INFO L470 AbstractCegarLoop]: Abstraction has 548 states and 1529 transitions. [2021-10-07 16:05:19,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:05:19,226 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 1529 transitions. [2021-10-07 16:05:19,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-07 16:05:19,227 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:05:19,227 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:05:19,241 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Ended with exit code 0 [2021-10-07 16:05:19,440 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 16:05:19,441 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err3REQUIRES_VIOLATION === [thread1Err4REQUIRES_VIOLATION, thread1Err5REQUIRES_VIOLATION, thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION (and 47 more)] === [2021-10-07 16:05:19,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:05:19,442 INFO L82 PathProgramCache]: Analyzing trace with hash -696077693, now seen corresponding path program 1 times [2021-10-07 16:05:19,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:05:19,442 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1985813365] [2021-10-07 16:05:19,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:05:19,443 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:05:19,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:05:19,452 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 16:05:19,453 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 16:05:19,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:05:19,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-07 16:05:19,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:05:19,881 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 16:05:19,899 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 16:05:20,041 INFO L354 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2021-10-07 16:05:20,042 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 29 treesize of output 31 [2021-10-07 16:05:20,060 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-07 16:05:20,060 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 28 treesize of output 28 [2021-10-07 16:05:20,556 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 16:05:20,557 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:05:22,672 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 16:05:22,672 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:05:22,673 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1985813365] [2021-10-07 16:05:22,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1985813365] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:05:22,673 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:05:22,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-10-07 16:05:22,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295780191] [2021-10-07 16:05:22,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 16:05:22,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:05:22,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 16:05:22,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-07 16:05:22,675 INFO L87 Difference]: Start difference. First operand 548 states and 1529 transitions. Second operand has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 8 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 16:05:38,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:05:38,171 INFO L93 Difference]: Finished difference Result 1615 states and 4550 transitions. [2021-10-07 16:05:38,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-07 16:05:38,172 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 8 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 13 [2021-10-07 16:05:38,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:05:38,177 INFO L225 Difference]: With dead ends: 1615 [2021-10-07 16:05:38,177 INFO L226 Difference]: Without dead ends: 1615 [2021-10-07 16:05:38,177 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 13076.2ms TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2021-10-07 16:05:38,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1615 states. [2021-10-07 16:05:38,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1615 to 805. [2021-10-07 16:05:38,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 765 states have (on average 3.1633986928104574) internal successors, (2420), 804 states have internal predecessors, (2420), 0 states have call successors, (0), 0 states 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 16:05:38,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 2420 transitions. [2021-10-07 16:05:38,201 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 2420 transitions. Word has length 13 [2021-10-07 16:05:38,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:05:38,202 INFO L470 AbstractCegarLoop]: Abstraction has 805 states and 2420 transitions. [2021-10-07 16:05:38,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 8 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 16:05:38,202 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 2420 transitions. [2021-10-07 16:05:38,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-07 16:05:38,203 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:05:38,203 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:05:38,218 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 16:05:38,416 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 16:05:38,417 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err2REQUIRES_VIOLATION === [thread1Err4REQUIRES_VIOLATION, thread1Err5REQUIRES_VIOLATION, thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION (and 47 more)] === [2021-10-07 16:05:38,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:05:38,418 INFO L82 PathProgramCache]: Analyzing trace with hash -696077692, now seen corresponding path program 1 times [2021-10-07 16:05:38,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:05:38,419 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2060979104] [2021-10-07 16:05:38,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:05:38,419 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:05:38,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:05:38,421 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 16:05:38,422 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 16:05:38,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:05:38,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 16:05:38,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:05:38,941 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 16:05:38,974 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-07 16:05:38,974 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 15 treesize of output 20 [2021-10-07 16:05:39,066 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 16:05:39,067 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:05:39,130 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 16:05:39,130 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:05:39,130 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2060979104] [2021-10-07 16:05:39,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2060979104] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:05:39,131 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:05:39,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-07 16:05:39,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193893327] [2021-10-07 16:05:39,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-07 16:05:39,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:05:39,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-07 16:05:39,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-07 16:05:39,132 INFO L87 Difference]: Start difference. First operand 805 states and 2420 transitions. Second operand has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 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 16:05:39,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:05:39,401 INFO L93 Difference]: Finished difference Result 625 states and 1757 transitions. [2021-10-07 16:05:39,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 16:05:39,402 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 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 13 [2021-10-07 16:05:39,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:05:39,403 INFO L225 Difference]: With dead ends: 625 [2021-10-07 16:05:39,403 INFO L226 Difference]: Without dead ends: 625 [2021-10-07 16:05:39,403 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 64.0ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-07 16:05:39,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2021-10-07 16:05:39,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 625. [2021-10-07 16:05:39,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 625 states, 604 states have (on average 2.9089403973509933) internal successors, (1757), 624 states have internal predecessors, (1757), 0 states have call successors, (0), 0 states 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 16:05:39,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 1757 transitions. [2021-10-07 16:05:39,413 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 1757 transitions. Word has length 13 [2021-10-07 16:05:39,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:05:39,413 INFO L470 AbstractCegarLoop]: Abstraction has 625 states and 1757 transitions. [2021-10-07 16:05:39,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 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 16:05:39,413 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 1757 transitions. [2021-10-07 16:05:39,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-07 16:05:39,414 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:05:39,414 INFO L512 BasicCegarLoop]: trace histogram [12, 1, 1, 1] [2021-10-07 16:05:39,427 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Ended with exit code 0 [2021-10-07 16:05:39,620 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 16:05:39,621 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [thread1Err4REQUIRES_VIOLATION, thread1Err5REQUIRES_VIOLATION, thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION (and 47 more)] === [2021-10-07 16:05:39,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:05:39,622 INFO L82 PathProgramCache]: Analyzing trace with hash -1988008824, now seen corresponding path program 2 times [2021-10-07 16:05:39,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:05:39,623 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1657010115] [2021-10-07 16:05:39,623 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 16:05:39,623 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:05:39,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:05:39,624 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 16:05:39,625 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 16:05:39,918 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 16:05:39,918 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:05:39,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-07 16:05:39,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:05:39,949 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 16:05:40,786 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:05:40,786 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:05:45,499 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:05:45,499 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:05:45,500 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1657010115] [2021-10-07 16:05:45,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1657010115] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:05:45,500 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:05:45,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 27 [2021-10-07 16:05:45,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750044073] [2021-10-07 16:05:45,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-10-07 16:05:45,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:05:45,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-10-07 16:05:45,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=534, Unknown=0, NotChecked=0, Total=756 [2021-10-07 16:05:45,502 INFO L87 Difference]: Start difference. First operand 625 states and 1757 transitions. Second operand has 28 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 28 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:05:54,425 WARN L207 SmtUtils]: Spent 5.08 s on a formula simplification that was a NOOP. DAG size: 142 [2021-10-07 16:07:14,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:07:14,734 INFO L93 Difference]: Finished difference Result 8045 states and 23798 transitions. [2021-10-07 16:07:14,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-07 16:07:14,737 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 28 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-07 16:07:14,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:07:14,755 INFO L225 Difference]: With dead ends: 8045 [2021-10-07 16:07:14,755 INFO L226 Difference]: Without dead ends: 8045 [2021-10-07 16:07:14,756 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 32046.0ms TimeCoverageRelationStatistics Valid=558, Invalid=1002, Unknown=0, NotChecked=0, Total=1560 [2021-10-07 16:07:14,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8045 states. [2021-10-07 16:07:14,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8045 to 653. [2021-10-07 16:07:14,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 653 states, 632 states have (on average 2.8544303797468356) internal successors, (1804), 652 states have internal predecessors, (1804), 0 states have call successors, (0), 0 states 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 16:07:14,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 1804 transitions. [2021-10-07 16:07:14,823 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 1804 transitions. Word has length 15 [2021-10-07 16:07:14,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:07:14,823 INFO L470 AbstractCegarLoop]: Abstraction has 653 states and 1804 transitions. [2021-10-07 16:07:14,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 28 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:07:14,823 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 1804 transitions. [2021-10-07 16:07:14,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 16:07:14,824 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:07:14,824 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:07:14,839 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 16:07:15,038 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 16:07:15,039 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err3REQUIRES_VIOLATION === [thread1Err4REQUIRES_VIOLATION, thread1Err5REQUIRES_VIOLATION, thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION (and 47 more)] === [2021-10-07 16:07:15,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:07:15,040 INFO L82 PathProgramCache]: Analyzing trace with hash -1298303197, now seen corresponding path program 2 times [2021-10-07 16:07:15,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:07:15,041 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [122186759] [2021-10-07 16:07:15,041 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 16:07:15,042 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:07:15,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:07:15,043 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 16:07:15,044 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 16:07:15,384 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 16:07:15,384 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:07:15,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-07 16:07:15,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:07:15,410 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 16:07:15,419 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 16:07:15,553 INFO L354 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2021-10-07 16:07:15,553 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 33 [2021-10-07 16:07:15,569 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-07 16:07:15,570 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 30 [2021-10-07 16:07:15,862 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 16:07:15,862 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:07:18,757 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 16:07:18,757 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:07:18,757 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [122186759] [2021-10-07 16:07:18,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [122186759] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:07:18,758 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:07:18,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-07 16:07:18,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337649208] [2021-10-07 16:07:18,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-07 16:07:18,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:07:18,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-07 16:07:18,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-07 16:07:18,759 INFO L87 Difference]: Start difference. First operand 653 states and 1804 transitions. Second operand has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 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 16:07:19,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:07:19,324 INFO L93 Difference]: Finished difference Result 543 states and 1472 transitions. [2021-10-07 16:07:19,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 16:07:19,325 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 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 16:07:19,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:07:19,326 INFO L225 Difference]: With dead ends: 543 [2021-10-07 16:07:19,326 INFO L226 Difference]: Without dead ends: 543 [2021-10-07 16:07:19,327 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 237.7ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-07 16:07:19,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2021-10-07 16:07:19,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 332. [2021-10-07 16:07:19,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 324 states have (on average 2.5833333333333335) internal successors, (837), 331 states have internal predecessors, (837), 0 states have call successors, (0), 0 states 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 16:07:19,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 837 transitions. [2021-10-07 16:07:19,332 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 837 transitions. Word has length 16 [2021-10-07 16:07:19,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:07:19,332 INFO L470 AbstractCegarLoop]: Abstraction has 332 states and 837 transitions. [2021-10-07 16:07:19,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 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 16:07:19,332 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 837 transitions. [2021-10-07 16:07:19,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 16:07:19,333 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:07:19,333 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:07:19,344 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 16:07:19,535 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 16:07:19,536 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting thread3Err3REQUIRES_VIOLATION === [thread1Err4REQUIRES_VIOLATION, thread1Err5REQUIRES_VIOLATION, thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION (and 47 more)] === [2021-10-07 16:07:19,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:07:19,536 INFO L82 PathProgramCache]: Analyzing trace with hash -791859280, now seen corresponding path program 1 times [2021-10-07 16:07:19,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:07:19,537 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1285119258] [2021-10-07 16:07:19,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:07:19,538 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:07:19,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:07:19,539 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 16:07:19,540 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 16:07:19,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:07:19,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 16:07:19,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:07:20,108 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 16:07:20,108 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:07:20,193 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 16:07:20,193 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:07:20,194 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1285119258] [2021-10-07 16:07:20,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1285119258] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:07:20,194 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:07:20,194 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-07 16:07:20,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271907414] [2021-10-07 16:07:20,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-07 16:07:20,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:07:20,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-07 16:07:20,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-07 16:07:20,196 INFO L87 Difference]: Start difference. First operand 332 states and 837 transitions. Second operand has 6 states, 5 states have (on average 6.4) internal successors, (32), 6 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 16:07:20,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:07:20,463 INFO L93 Difference]: Finished difference Result 465 states and 1150 transitions. [2021-10-07 16:07:20,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 16:07:20,464 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 6 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 18 [2021-10-07 16:07:20,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:07:20,465 INFO L225 Difference]: With dead ends: 465 [2021-10-07 16:07:20,465 INFO L226 Difference]: Without dead ends: 332 [2021-10-07 16:07:20,465 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 76.1ms TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-10-07 16:07:20,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2021-10-07 16:07:20,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 332. [2021-10-07 16:07:20,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 324 states have (on average 2.580246913580247) internal successors, (836), 331 states have internal predecessors, (836), 0 states have call successors, (0), 0 states 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 16:07:20,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 836 transitions. [2021-10-07 16:07:20,470 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 836 transitions. Word has length 18 [2021-10-07 16:07:20,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:07:20,470 INFO L470 AbstractCegarLoop]: Abstraction has 332 states and 836 transitions. [2021-10-07 16:07:20,470 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 6 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 16:07:20,471 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 836 transitions. [2021-10-07 16:07:20,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 16:07:20,471 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:07:20,471 INFO L512 BasicCegarLoop]: trace histogram [15, 1, 1, 1, 1] [2021-10-07 16:07:20,483 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 16:07:20,673 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 16:07:20,674 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [thread1Err4REQUIRES_VIOLATION, thread1Err5REQUIRES_VIOLATION, thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION (and 47 more)] === [2021-10-07 16:07:20,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:07:20,674 INFO L82 PathProgramCache]: Analyzing trace with hash -200270877, now seen corresponding path program 1 times [2021-10-07 16:07:20,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:07:20,676 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [135675943] [2021-10-07 16:07:20,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:07:20,676 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:07:20,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:07:20,677 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 16:07:20,678 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 16:07:20,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:07:21,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-07 16:07:21,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:07:21,022 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 16:07:22,108 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:07:22,108 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:07:29,974 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:07:29,974 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:07:29,974 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [135675943] [2021-10-07 16:07:29,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [135675943] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:07:29,974 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:07:29,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 33 [2021-10-07 16:07:29,975 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910595089] [2021-10-07 16:07:29,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-10-07 16:07:29,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:07:29,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-10-07 16:07:29,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=801, Unknown=0, NotChecked=0, Total=1122 [2021-10-07 16:07:29,976 INFO L87 Difference]: Start difference. First operand 332 states and 836 transitions. Second operand has 34 states, 33 states have (on average 1.0909090909090908) internal successors, (36), 34 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:07:49,849 WARN L207 SmtUtils]: Spent 13.25 s on a formula simplification that was a NOOP. DAG size: 179 [2021-10-07 16:09:01,508 WARN L207 SmtUtils]: Spent 9.38 s on a formula simplification that was a NOOP. DAG size: 168 [2021-10-07 16:09:11,617 WARN L207 SmtUtils]: Spent 8.52 s on a formula simplification that was a NOOP. DAG size: 157 [2021-10-07 16:09:20,112 WARN L207 SmtUtils]: Spent 6.97 s on a formula simplification that was a NOOP. DAG size: 146 [2021-10-07 16:10:04,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:10:04,982 INFO L93 Difference]: Finished difference Result 7056 states and 19997 transitions. [2021-10-07 16:10:04,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-07 16:10:04,984 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 1.0909090909090908) internal successors, (36), 34 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-07 16:10:04,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:10:05,002 INFO L225 Difference]: With dead ends: 7056 [2021-10-07 16:10:05,002 INFO L226 Difference]: Without dead ends: 7056 [2021-10-07 16:10:05,003 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 73813.6ms TimeCoverageRelationStatistics Valid=831, Invalid=1521, Unknown=0, NotChecked=0, Total=2352 [2021-10-07 16:10:05,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7056 states. [2021-10-07 16:10:05,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7056 to 366. [2021-10-07 16:10:05,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 358 states have (on average 2.477653631284916) internal successors, (887), 365 states have internal predecessors, (887), 0 states have call successors, (0), 0 states 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 16:10:05,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 887 transitions. [2021-10-07 16:10:05,044 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 887 transitions. Word has length 19 [2021-10-07 16:10:05,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:10:05,044 INFO L470 AbstractCegarLoop]: Abstraction has 366 states and 887 transitions. [2021-10-07 16:10:05,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 1.0909090909090908) internal successors, (36), 34 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:10:05,044 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 887 transitions. [2021-10-07 16:10:05,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 16:10:05,045 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:10:05,046 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:10:05,061 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-10-07 16:10:05,246 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 16:10:05,247 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting thread3Err3REQUIRES_VIOLATION === [thread1Err4REQUIRES_VIOLATION, thread1Err5REQUIRES_VIOLATION, thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION (and 47 more)] === [2021-10-07 16:10:05,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:10:05,247 INFO L82 PathProgramCache]: Analyzing trace with hash 1680382003, now seen corresponding path program 1 times [2021-10-07 16:10:05,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:10:05,248 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1368739124] [2021-10-07 16:10:05,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:10:05,249 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:10:05,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:10:05,250 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 16:10:05,252 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 16:10:05,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:10:05,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-07 16:10:05,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:10:05,784 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 16:10:06,134 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-07 16:10:06,134 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:10:07,907 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-07 16:10:07,908 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:10:07,908 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1368739124] [2021-10-07 16:10:07,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1368739124] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:10:07,908 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:10:07,908 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-10-07 16:10:07,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840266895] [2021-10-07 16:10:07,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 16:10:07,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:10:07,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 16:10:07,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-07 16:10:07,910 INFO L87 Difference]: Start difference. First operand 366 states and 887 transitions. Second operand has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 8 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:10:11,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:10:11,042 INFO L93 Difference]: Finished difference Result 712 states and 1835 transitions. [2021-10-07 16:10:11,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-07 16:10:11,043 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 8 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-07 16:10:11,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:10:11,045 INFO L225 Difference]: With dead ends: 712 [2021-10-07 16:10:11,045 INFO L226 Difference]: Without dead ends: 712 [2021-10-07 16:10:11,045 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1693.3ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-10-07 16:10:11,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2021-10-07 16:10:11,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 523. [2021-10-07 16:10:11,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 523 states, 515 states have (on average 2.5941747572815532) internal successors, (1336), 522 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states 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 16:10:11,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 1336 transitions. [2021-10-07 16:10:11,053 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 1336 transitions. Word has length 19 [2021-10-07 16:10:11,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:10:11,053 INFO L470 AbstractCegarLoop]: Abstraction has 523 states and 1336 transitions. [2021-10-07 16:10:11,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 8 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:10:11,053 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 1336 transitions. [2021-10-07 16:10:11,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 16:10:11,054 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:10:11,054 INFO L512 BasicCegarLoop]: trace histogram [18, 1, 1] [2021-10-07 16:10:11,066 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 16:10:11,255 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 16:10:11,256 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err4REQUIRES_VIOLATION, thread1Err5REQUIRES_VIOLATION, thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION (and 47 more)] === [2021-10-07 16:10:11,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:10:11,256 INFO L82 PathProgramCache]: Analyzing trace with hash 1377001538, now seen corresponding path program 3 times [2021-10-07 16:10:11,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:10:11,257 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [787325602] [2021-10-07 16:10:11,257 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 16:10:11,258 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:10:11,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:10:11,259 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 16:10:11,259 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 16:10:11,983 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-10-07 16:10:11,983 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:10:11,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-07 16:10:11,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:10:12,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:10:12,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:10:12,317 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-07 16:10:12,318 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 74 [2021-10-07 16:10:13,625 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:10:13,625 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:10:25,125 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:10:25,126 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:10:25,126 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [787325602] [2021-10-07 16:10:25,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [787325602] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:10:25,126 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:10:25,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 38 [2021-10-07 16:10:25,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403634476] [2021-10-07 16:10:25,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2021-10-07 16:10:25,127 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:10:25,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-10-07 16:10:25,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=438, Invalid=1122, Unknown=0, NotChecked=0, Total=1560 [2021-10-07 16:10:25,129 INFO L87 Difference]: Start difference. First operand 523 states and 1336 transitions. Second operand has 40 states, 39 states have (on average 1.0256410256410255) internal successors, (40), 39 states have internal predecessors, (40), 0 states have call successors, (0), 0 states 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 16:10:55,917 WARN L207 SmtUtils]: Spent 20.67 s on a formula simplification that was a NOOP. DAG size: 211 [2021-10-07 16:11:17,963 WARN L207 SmtUtils]: Spent 20.18 s on a formula simplification that was a NOOP. DAG size: 200 [2021-10-07 16:12:09,852 WARN L207 SmtUtils]: Spent 13.81 s on a formula simplification that was a NOOP. DAG size: 189 Received shutdown request... [2021-10-07 16:12:40,714 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-07 16:12:40,714 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 16:12:41,739 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 16:12:41,918 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2021-10-07 16:12:41,940 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-07 16:12:41,940 WARN L594 AbstractCegarLoop]: Verification canceled: while executing Executor. [2021-10-07 16:12:41,942 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err4REQUIRES_VIOLATION [2021-10-07 16:12:41,942 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err5REQUIRES_VIOLATION [2021-10-07 16:12:41,942 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0REQUIRES_VIOLATION [2021-10-07 16:12:41,943 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1REQUIRES_VIOLATION [2021-10-07 16:12:41,943 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2REQUIRES_VIOLATION [2021-10-07 16:12:41,943 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 [2021-10-07 16:12:41,943 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3REQUIRES_VIOLATION [2021-10-07 16:12:41,944 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0REQUIRES_VIOLATION [2021-10-07 16:12:41,944 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1REQUIRES_VIOLATION [2021-10-07 16:12:41,944 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2REQUIRES_VIOLATION [2021-10-07 16:12:41,944 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3REQUIRES_VIOLATION [2021-10-07 16:12:41,944 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err0REQUIRES_VIOLATION [2021-10-07 16:12:41,944 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err1REQUIRES_VIOLATION [2021-10-07 16:12:41,944 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err2REQUIRES_VIOLATION [2021-10-07 16:12:41,945 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err3REQUIRES_VIOLATION [2021-10-07 16:12:41,945 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-07 16:12:41,945 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-07 16:12:41,945 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-07 16:12:41,945 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-07 16:12:41,945 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-07 16:12:41,945 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-07 16:12:41,945 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-07 16:12:41,945 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-07 16:12:41,945 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-07 16:12:41,946 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr10REQUIRES_VIOLATION [2021-10-07 16:12:41,946 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr11REQUIRES_VIOLATION [2021-10-07 16:12:41,946 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr12REQUIRES_VIOLATION [2021-10-07 16:12:41,946 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr13REQUIRES_VIOLATION [2021-10-07 16:12:41,946 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr14REQUIRES_VIOLATION [2021-10-07 16:12:41,946 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr15REQUIRES_VIOLATION [2021-10-07 16:12:41,946 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr16REQUIRES_VIOLATION [2021-10-07 16:12:41,946 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr17REQUIRES_VIOLATION [2021-10-07 16:12:41,946 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK [2021-10-07 16:12:41,947 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK [2021-10-07 16:12:41,947 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-07 16:12:41,947 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-07 16:12:41,947 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-07 16:12:41,947 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err4REQUIRES_VIOLATION [2021-10-07 16:12:41,947 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err5REQUIRES_VIOLATION [2021-10-07 16:12:41,947 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0REQUIRES_VIOLATION [2021-10-07 16:12:41,947 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1REQUIRES_VIOLATION [2021-10-07 16:12:41,947 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2REQUIRES_VIOLATION [2021-10-07 16:12:41,948 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3REQUIRES_VIOLATION [2021-10-07 16:12:41,948 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0REQUIRES_VIOLATION [2021-10-07 16:12:41,948 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1REQUIRES_VIOLATION [2021-10-07 16:12:41,948 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2REQUIRES_VIOLATION [2021-10-07 16:12:41,948 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3REQUIRES_VIOLATION [2021-10-07 16:12:41,949 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err0REQUIRES_VIOLATION [2021-10-07 16:12:41,949 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err1REQUIRES_VIOLATION [2021-10-07 16:12:41,949 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err2REQUIRES_VIOLATION [2021-10-07 16:12:41,949 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err3REQUIRES_VIOLATION [2021-10-07 16:12:41,955 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-07 16:12:41,955 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-07 16:12:41,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.10 04:12:41 BasicIcfg [2021-10-07 16:12:41,957 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-07 16:12:41,958 INFO L168 Benchmark]: Toolchain (without parser) took 844963.24 ms. Allocated memory was 151.0 MB in the beginning and 230.7 MB in the end (delta: 79.7 MB). Free memory was 125.5 MB in the beginning and 42.8 MB in the end (delta: 82.6 MB). Peak memory consumption was 163.6 MB. Max. memory is 8.0 GB. [2021-10-07 16:12:41,959 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory is still 123.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-07 16:12:41,959 INFO L168 Benchmark]: CACSL2BoogieTranslator took 394.37 ms. Allocated memory is still 151.0 MB. Free memory was 125.2 MB in the beginning and 110.5 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-10-07 16:12:41,959 INFO L168 Benchmark]: Boogie Procedure Inliner took 108.34 ms. Allocated memory is still 151.0 MB. Free memory was 110.5 MB in the beginning and 107.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-10-07 16:12:41,960 INFO L168 Benchmark]: Boogie Preprocessor took 79.19 ms. Allocated memory is still 151.0 MB. Free memory was 107.8 MB in the beginning and 105.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-07 16:12:41,960 INFO L168 Benchmark]: RCFGBuilder took 2186.50 ms. Allocated memory is still 151.0 MB. Free memory was 105.5 MB in the beginning and 81.3 MB in the end (delta: 24.2 MB). Peak memory consumption was 25.5 MB. Max. memory is 8.0 GB. [2021-10-07 16:12:41,960 INFO L168 Benchmark]: TraceAbstraction took 842180.25 ms. Allocated memory was 151.0 MB in the beginning and 230.7 MB in the end (delta: 79.7 MB). Free memory was 80.8 MB in the beginning and 42.8 MB in the end (delta: 38.0 MB). Peak memory consumption was 118.2 MB. Max. memory is 8.0 GB. [2021-10-07 16:12:41,962 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory is still 123.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 394.37 ms. Allocated memory is still 151.0 MB. Free memory was 125.2 MB in the beginning and 110.5 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 108.34 ms. Allocated memory is still 151.0 MB. Free memory was 110.5 MB in the beginning and 107.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 79.19 ms. Allocated memory is still 151.0 MB. Free memory was 107.8 MB in the beginning and 105.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 2186.50 ms. Allocated memory is still 151.0 MB. Free memory was 105.5 MB in the beginning and 81.3 MB in the end (delta: 24.2 MB). Peak memory consumption was 25.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 842180.25 ms. Allocated memory was 151.0 MB in the beginning and 230.7 MB in the end (delta: 79.7 MB). Free memory was 80.8 MB in the beginning and 42.8 MB in the end (delta: 38.0 MB). Peak memory consumption was 118.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 53115.0ms, 255 PlacesBefore, 71 PlacesAfterwards, 267 TransitionsBefore, 68 TransitionsAfterwards, 3794 CoEnabledTransitionPairs, 7 FixpointIterations, 167 TrivialSequentialCompositions, 70 ConcurrentSequentialCompositions, 31 TrivialYvCompositions, 8 ConcurrentYvCompositions, 15 ChoiceCompositions, 291 TotalNumberOfCompositions, 6767 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4945, positive: 4854, positive conditional: 0, positive unconditional: 4854, negative: 91, negative conditional: 0, negative unconditional: 91, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2361, positive: 2332, positive conditional: 0, positive unconditional: 2332, negative: 29, negative conditional: 0, negative unconditional: 29, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2361, positive: 2318, positive conditional: 0, positive unconditional: 2318, negative: 43, negative conditional: 0, negative unconditional: 43, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 43, positive: 14, positive conditional: 0, positive unconditional: 14, negative: 29, negative conditional: 0, negative unconditional: 29, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 5914, positive: 3353, positive conditional: 0, positive unconditional: 3353, negative: 2561, negative conditional: 0, negative unconditional: 2561, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 4945, positive: 2522, positive conditional: 0, positive unconditional: 2522, negative: 62, negative conditional: 0, negative unconditional: 62, unknown: 2361, unknown conditional: 0, unknown unconditional: 2361] , Statistics on independence cache: Total cache size (in pairs): 243, Positive cache size: 235, Positive conditional cache size: 0, Positive unconditional cache size: 235, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8 - 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: 161]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 66]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 66]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 54]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 54]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 59]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 59]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 79]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 79]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 83]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 83]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 101]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 101]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 105]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 105]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 161]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 161]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 161]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 161]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 161]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 142]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 142]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 143]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 143]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 144]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 144]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 145]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 145]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 146]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 146]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 147]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 147]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 150]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while executing Executor. - TimeoutResultAtElement [Line: 117]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while executing Executor. - TimeoutResultAtElement [Line: 142]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - TimeoutResultAtElement [Line: 144]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - TimeoutResultAtElement [Line: 143]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 297 locations, 51 error locations. Started 1 CEGAR loops. OverallTime: 841997.5ms, OverallIterations: 27, TraceHistogramMax: 18, EmptinessCheckTime: 41.4ms, AutomataDifference: 622702.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 53282.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1161 SDtfs, 18458 SDslu, 8200 SDs, 0 SdLazy, 19859 SolverSat, 3149 SolverUnsat, 122 SolverUnknown, 0 SolverNotchecked, 377154.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 578 GetRequests, 264 SyntacticMatches, 8 SemanticMatches, 306 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 416 ImplicationChecksByTransitivity, 306677.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=2870occurred in iteration=2, InterpolantAutomatonStates: 230, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 2327.9ms AutomataMinimizationTime, 26 MinimizatonAttempts, 67539 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 333.7ms SsaConstructionTime, 2782.2ms SatisfiabilityAnalysisTime, 95755.3ms InterpolantComputationTime, 270 NumberOfCodeBlocks, 261 NumberOfCodeBlocksAsserted, 38 NumberOfCheckSat, 486 ConstructedInterpolants, 127 QuantifiedInterpolants, 11024 SizeOfPredicates, 173 NumberOfNonLiveVariables, 3180 ConjunctsInSsa, 324 ConjunctsInUnsatCore, 54 InterpolantComputations, 36 PerfectInterpolantSequences, 64/916 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