/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/figure1.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-06 21:26:17,273 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-06 21:26:17,277 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-06 21:26:17,326 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-06 21:26:17,356 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-06 21:26:17,359 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-06 21:26:17,362 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-06 21:26:17,366 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-06 21:26:17,368 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-06 21:26:17,370 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-06 21:26:17,378 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-06 21:26:17,385 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-06 21:26:17,401 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-06 21:26:17,403 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-06 21:26:17,405 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-06 21:26:17,407 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-06 21:26:17,417 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-10-06 21:26:17,423 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-06 21:26:17,424 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-06 21:26:17,427 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-06 21:26:17,427 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-06 21:26:17,430 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-06 21:26:17,430 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-06 21:26:17,431 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-06 21:26:17,431 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-06 21:26:17,431 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-06 21:26:17,432 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-06 21:26:17,434 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-06 21:26:17,435 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-06 21:26:17,491 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-06 21:26:17,491 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-06 21:26:17,492 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-06 21:26:17,493 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-06 21:26:17,497 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-06 21:26:17,497 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-06 21:26:17,497 INFO L138 SettingsManager]: * Use SBE=true [2021-10-06 21:26:17,498 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-06 21:26:17,498 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-06 21:26:17,498 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-06 21:26:17,499 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-06 21:26:17,499 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-06 21:26:17,500 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-06 21:26:17,500 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-06 21:26:17,500 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-06 21:26:17,500 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-06 21:26:17,501 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-06 21:26:17,501 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-06 21:26:17,501 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-06 21:26:17,501 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-06 21:26:17,501 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-06 21:26:17,502 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-06 21:26:17,502 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-06 21:26:17,502 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-06 21:26:17,502 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-06 21:26:17,502 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-06 21:26:17,503 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-06 21:26:17,503 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-06 21:26:17,503 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-06 21:26:17,503 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-06 21:26:17,504 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-06 21:26:17,504 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-06 21:26:17,504 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-06 21:26:17,879 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-06 21:26:17,918 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-06 21:26:17,921 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-06 21:26:17,922 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-06 21:26:17,923 INFO L275 PluginConnector]: CDTParser initialized [2021-10-06 21:26:17,924 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20/figure1.wvr.c [2021-10-06 21:26:18,000 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e92bd50bd/1943feef5877442faaddb2f21f67621a/FLAGf7b817808 [2021-10-06 21:26:18,563 INFO L306 CDTParser]: Found 1 translation units. [2021-10-06 21:26:18,564 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20/figure1.wvr.c [2021-10-06 21:26:18,580 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e92bd50bd/1943feef5877442faaddb2f21f67621a/FLAGf7b817808 [2021-10-06 21:26:18,950 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e92bd50bd/1943feef5877442faaddb2f21f67621a [2021-10-06 21:26:18,954 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-06 21:26:18,963 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-06 21:26:18,969 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-06 21:26:18,969 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-06 21:26:18,974 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-06 21:26:18,976 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 09:26:18" (1/1) ... [2021-10-06 21:26:18,980 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66105574 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:26:18, skipping insertion in model container [2021-10-06 21:26:18,980 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 09:26:18" (1/1) ... [2021-10-06 21:26:18,991 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-06 21:26:19,014 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-06 21:26:19,276 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/figure1.wvr.c[1939,1952] [2021-10-06 21:26:19,279 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-06 21:26:19,293 INFO L203 MainTranslator]: Completed pre-run [2021-10-06 21:26:19,315 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/figure1.wvr.c[1939,1952] [2021-10-06 21:26:19,316 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-06 21:26:19,334 INFO L208 MainTranslator]: Completed translation [2021-10-06 21:26:19,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:26:19 WrapperNode [2021-10-06 21:26:19,335 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-06 21:26:19,336 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-06 21:26:19,336 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-06 21:26:19,337 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-06 21:26:19,345 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:26:19" (1/1) ... [2021-10-06 21:26:19,357 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:26:19" (1/1) ... [2021-10-06 21:26:19,381 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-06 21:26:19,382 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-06 21:26:19,382 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-06 21:26:19,382 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-06 21:26:19,392 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:26:19" (1/1) ... [2021-10-06 21:26:19,392 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:26:19" (1/1) ... [2021-10-06 21:26:19,396 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:26:19" (1/1) ... [2021-10-06 21:26:19,397 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:26:19" (1/1) ... [2021-10-06 21:26:19,404 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:26:19" (1/1) ... [2021-10-06 21:26:19,409 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:26:19" (1/1) ... [2021-10-06 21:26:19,411 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:26:19" (1/1) ... [2021-10-06 21:26:19,414 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-06 21:26:19,415 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-06 21:26:19,416 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-06 21:26:19,416 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-06 21:26:19,417 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:26:19" (1/1) ... [2021-10-06 21:26:19,429 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-06 21:26:19,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 21:26:19,459 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) [2021-10-06 21:26:19,483 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 [2021-10-06 21:26:19,527 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-06 21:26:19,528 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-06 21:26:19,528 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-06 21:26:19,528 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-06 21:26:19,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-06 21:26:19,528 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-06 21:26:19,528 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-06 21:26:19,528 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-06 21:26:19,529 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-06 21:26:19,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-06 21:26:19,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-06 21:26:19,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-06 21:26:19,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-06 21:26:19,531 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-06 21:26:20,012 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-06 21:26:20,012 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-06 21:26:20,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 09:26:20 BoogieIcfgContainer [2021-10-06 21:26:20,016 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-06 21:26:20,018 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-06 21:26:20,018 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-06 21:26:20,022 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-06 21:26:20,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.10 09:26:18" (1/3) ... [2021-10-06 21:26:20,023 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6680fc7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 09:26:20, skipping insertion in model container [2021-10-06 21:26:20,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:26:19" (2/3) ... [2021-10-06 21:26:20,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6680fc7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 09:26:20, skipping insertion in model container [2021-10-06 21:26:20,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 09:26:20" (3/3) ... [2021-10-06 21:26:20,026 INFO L111 eAbstractionObserver]: Analyzing ICFG figure1.wvr.c [2021-10-06 21:26:20,033 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-06 21:26:20,034 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-10-06 21:26:20,034 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-06 21:26:20,068 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:26:20,069 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:26:20,070 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:26:20,070 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:26:20,070 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:26:20,071 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:26:20,071 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:26:20,071 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:26:20,071 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:26:20,072 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:26:20,073 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:26:20,073 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:26:20,073 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:26:20,073 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:26:20,074 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:26:20,074 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:26:20,074 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:26:20,074 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:26:20,075 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:26:20,075 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:26:20,075 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:26:20,076 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:26:20,076 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:26:20,076 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:26:20,076 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:26:20,077 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:26:20,077 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:26:20,077 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:26:20,077 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:26:20,077 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:26:20,078 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:26:20,078 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:26:20,078 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:26:20,078 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:26:20,079 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:26:20,079 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:26:20,079 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:26:20,079 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:26:20,080 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:26:20,080 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:26:20,083 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:26:20,083 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:26:20,084 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:26:20,084 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:26:20,084 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:26:20,087 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:26:20,087 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:26:20,088 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:26:20,088 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:26:20,088 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:26:20,088 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:26:20,088 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:26:20,095 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-06 21:26:20,143 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-06 21:26:20,151 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 [2021-10-06 21:26:20,151 INFO L340 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2021-10-06 21:26:20,167 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-06 21:26:20,181 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 77 transitions, 170 flow [2021-10-06 21:26:20,185 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 79 places, 77 transitions, 170 flow [2021-10-06 21:26:20,187 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 79 places, 77 transitions, 170 flow [2021-10-06 21:26:20,233 INFO L129 PetriNetUnfolder]: 5/75 cut-off events. [2021-10-06 21:26:20,234 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-06 21:26:20,238 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 75 events. 5/75 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 72 event pairs, 0 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2021-10-06 21:26:20,241 INFO L116 LiptonReduction]: Number of co-enabled transitions 576 [2021-10-06 21:26:26,524 INFO L131 LiptonReduction]: Checked pairs total: 649 [2021-10-06 21:26:26,524 INFO L133 LiptonReduction]: Total number of compositions: 75 [2021-10-06 21:26:26,534 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 27 transitions, 70 flow [2021-10-06 21:26:26,550 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 67 states, 57 states have (on average 2.7017543859649122) internal successors, (154), 66 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:26,553 INFO L276 IsEmpty]: Start isEmpty. Operand has 67 states, 57 states have (on average 2.7017543859649122) internal successors, (154), 66 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:26,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2021-10-06 21:26:26,558 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:26:26,559 INFO L512 BasicCegarLoop]: trace histogram [1] [2021-10-06 21:26:26,559 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:26:26,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:26:26,564 INFO L82 PathProgramCache]: Analyzing trace with hash 324, now seen corresponding path program 1 times [2021-10-06 21:26:26,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:26:26,577 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [28375813] [2021-10-06 21:26:26,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:26:26,578 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:26:26,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:26:26,591 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) [2021-10-06 21:26:26,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-06 21:26:26,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:26:26,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-06 21:26:26,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:26:26,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:26,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:26:26,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:26,679 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:26:26,679 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [28375813] [2021-10-06 21:26:26,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [28375813] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:26:26,681 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:26:26,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0, 0] imperfect sequences [] total 0 [2021-10-06 21:26:26,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481044021] [2021-10-06 21:26:26,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-06 21:26:26,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:26:26,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-06 21:26:26,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-06 21:26:26,728 INFO L87 Difference]: Start difference. First operand has 67 states, 57 states have (on average 2.7017543859649122) internal successors, (154), 66 states have internal predecessors, (154), 0 states have call successors, (0), 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 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:26,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:26:26,743 INFO L93 Difference]: Finished difference Result 64 states and 151 transitions. [2021-10-06 21:26:26,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-06 21:26:26,745 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 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 1 [2021-10-06 21:26:26,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:26:26,756 INFO L225 Difference]: With dead ends: 64 [2021-10-06 21:26:26,756 INFO L226 Difference]: Without dead ends: 64 [2021-10-06 21:26:26,757 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-06 21:26:26,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-10-06 21:26:26,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-10-06 21:26:26,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 57 states have (on average 2.6491228070175437) internal successors, (151), 63 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:26,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 151 transitions. [2021-10-06 21:26:26,801 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 151 transitions. Word has length 1 [2021-10-06 21:26:26,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:26:26,801 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 151 transitions. [2021-10-06 21:26:26,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:26,802 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 151 transitions. [2021-10-06 21:26:26,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-06 21:26:26,802 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:26:26,802 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-06 21:26:26,821 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-06 21:26:27,013 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 [2021-10-06 21:26:27,014 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:26:27,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:26:27,015 INFO L82 PathProgramCache]: Analyzing trace with hash 320297, now seen corresponding path program 1 times [2021-10-06 21:26:27,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:26:27,017 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2074501075] [2021-10-06 21:26:27,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:26:27,017 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:26:27,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:26:27,019 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) [2021-10-06 21:26:27,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-06 21:26:27,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:26:27,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-06 21:26:27,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:26:27,332 INFO L354 Elim1Store]: treesize reduction 142, result has 23.2 percent of original size [2021-10-06 21:26:27,334 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 18 treesize of output 48 [2021-10-06 21:26:27,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:27,820 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:26:27,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:27,831 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:26:27,832 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2074501075] [2021-10-06 21:26:27,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2074501075] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:26:27,835 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:26:27,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-06 21:26:27,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888958783] [2021-10-06 21:26:27,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 21:26:27,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:26:27,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 21:26:27,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:26:27,840 INFO L87 Difference]: Start difference. First operand 64 states and 151 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:27,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:26:27,882 INFO L93 Difference]: Finished difference Result 58 states and 139 transitions. [2021-10-06 21:26:27,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:26:27,883 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-06 21:26:27,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:26:27,890 INFO L225 Difference]: With dead ends: 58 [2021-10-06 21:26:27,890 INFO L226 Difference]: Without dead ends: 58 [2021-10-06 21:26:27,891 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:26:27,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-10-06 21:26:27,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2021-10-06 21:26:27,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 53 states have (on average 2.6226415094339623) internal successors, (139), 57 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:27,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 139 transitions. [2021-10-06 21:26:27,917 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 139 transitions. Word has length 3 [2021-10-06 21:26:27,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:26:27,918 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 139 transitions. [2021-10-06 21:26:27,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:27,918 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 139 transitions. [2021-10-06 21:26:27,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-06 21:26:27,921 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:26:27,921 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-06 21:26:27,942 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-06 21:26:28,135 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 [2021-10-06 21:26:28,136 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:26:28,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:26:28,137 INFO L82 PathProgramCache]: Analyzing trace with hash 320298, now seen corresponding path program 1 times [2021-10-06 21:26:28,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:26:28,139 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [15387394] [2021-10-06 21:26:28,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:26:28,140 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:26:28,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:26:28,141 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) [2021-10-06 21:26:28,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-06 21:26:28,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:26:28,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-06 21:26:28,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:26:28,288 INFO L354 Elim1Store]: treesize reduction 76, result has 30.3 percent of original size [2021-10-06 21:26:28,289 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 3 case distinctions, treesize of input 15 treesize of output 38 [2021-10-06 21:26:28,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:28,349 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:26:28,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:28,402 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:26:28,402 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [15387394] [2021-10-06 21:26:28,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [15387394] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:26:28,402 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:26:28,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 21:26:28,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318880411] [2021-10-06 21:26:28,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:26:28,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:26:28,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:26:28,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:26:28,405 INFO L87 Difference]: Start difference. First operand 58 states and 139 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:28,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:26:28,432 INFO L93 Difference]: Finished difference Result 52 states and 127 transitions. [2021-10-06 21:26:28,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:26:28,433 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-06 21:26:28,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:26:28,434 INFO L225 Difference]: With dead ends: 52 [2021-10-06 21:26:28,434 INFO L226 Difference]: Without dead ends: 52 [2021-10-06 21:26:28,434 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 34.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:26:28,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-06 21:26:28,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-10-06 21:26:28,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 49 states have (on average 2.5918367346938775) internal successors, (127), 51 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:28,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 127 transitions. [2021-10-06 21:26:28,441 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 127 transitions. Word has length 3 [2021-10-06 21:26:28,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:26:28,442 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 127 transitions. [2021-10-06 21:26:28,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:28,442 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 127 transitions. [2021-10-06 21:26:28,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-06 21:26:28,443 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:26:28,443 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-06 21:26:28,459 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-06 21:26:28,656 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 [2021-10-06 21:26:28,657 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:26:28,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:26:28,658 INFO L82 PathProgramCache]: Analyzing trace with hash 307811502, now seen corresponding path program 1 times [2021-10-06 21:26:28,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:26:28,659 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1102740236] [2021-10-06 21:26:28,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:26:28,660 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:26:28,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:26:28,661 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) [2021-10-06 21:26:28,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-06 21:26:28,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:26:28,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-06 21:26:28,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:26:28,830 INFO L354 Elim1Store]: treesize reduction 82, result has 24.8 percent of original size [2021-10-06 21:26:28,830 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 3 case distinctions, treesize of input 37 treesize of output 53 [2021-10-06 21:26:28,846 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 92 treesize of output 90 [2021-10-06 21:26:29,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:29,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:26:29,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:29,172 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:26:29,172 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1102740236] [2021-10-06 21:26:29,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1102740236] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:26:29,173 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:26:29,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 21:26:29,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218172080] [2021-10-06 21:26:29,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:26:29,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:26:29,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:26:29,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:26:29,175 INFO L87 Difference]: Start difference. First operand 52 states and 127 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:29,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:26:29,197 INFO L93 Difference]: Finished difference Result 43 states and 100 transitions. [2021-10-06 21:26:29,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:26:29,199 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-06 21:26:29,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:26:29,200 INFO L225 Difference]: With dead ends: 43 [2021-10-06 21:26:29,200 INFO L226 Difference]: Without dead ends: 43 [2021-10-06 21:26:29,201 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:26:29,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-10-06 21:26:29,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2021-10-06 21:26:29,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 41 states have (on average 2.4390243902439024) internal successors, (100), 42 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:29,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 100 transitions. [2021-10-06 21:26:29,209 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 100 transitions. Word has length 5 [2021-10-06 21:26:29,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:26:29,212 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 100 transitions. [2021-10-06 21:26:29,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:29,213 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 100 transitions. [2021-10-06 21:26:29,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-06 21:26:29,213 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:26:29,213 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-06 21:26:29,231 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-06 21:26:29,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:26:29,426 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:26:29,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:26:29,427 INFO L82 PathProgramCache]: Analyzing trace with hash 307811503, now seen corresponding path program 1 times [2021-10-06 21:26:29,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:26:29,428 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2046002334] [2021-10-06 21:26:29,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:26:29,429 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:26:29,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:26:29,430 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:26:29,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-06 21:26:29,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:26:29,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-06 21:26:29,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:26:29,589 INFO L354 Elim1Store]: treesize reduction 142, result has 23.2 percent of original size [2021-10-06 21:26:29,589 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 18 treesize of output 48 [2021-10-06 21:26:29,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:29,864 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:26:29,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:29,881 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:26:29,881 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2046002334] [2021-10-06 21:26:29,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2046002334] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:26:29,886 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:26:29,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-06 21:26:29,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941366046] [2021-10-06 21:26:29,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 21:26:29,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:26:29,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 21:26:29,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:26:29,890 INFO L87 Difference]: Start difference. First operand 43 states and 100 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:29,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:26:29,918 INFO L93 Difference]: Finished difference Result 34 states and 73 transitions. [2021-10-06 21:26:29,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:26:29,919 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-06 21:26:29,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:26:29,920 INFO L225 Difference]: With dead ends: 34 [2021-10-06 21:26:29,920 INFO L226 Difference]: Without dead ends: 34 [2021-10-06 21:26:29,920 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:26:29,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-10-06 21:26:29,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-10-06 21:26:29,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 2.212121212121212) internal successors, (73), 33 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:29,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 73 transitions. [2021-10-06 21:26:29,925 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 73 transitions. Word has length 5 [2021-10-06 21:26:29,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:26:29,925 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 73 transitions. [2021-10-06 21:26:29,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:29,926 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 73 transitions. [2021-10-06 21:26:29,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-06 21:26:29,926 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:26:29,927 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:26:29,944 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-06 21:26:30,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:26:30,146 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:26:30,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:26:30,147 INFO L82 PathProgramCache]: Analyzing trace with hash 1704107000, now seen corresponding path program 1 times [2021-10-06 21:26:30,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:26:30,148 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1712587134] [2021-10-06 21:26:30,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:26:30,148 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:26:30,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:26:30,149 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:26:30,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-06 21:26:30,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:26:30,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-06 21:26:30,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:26:30,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:30,255 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:26:30,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:30,297 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:26:30,297 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1712587134] [2021-10-06 21:26:30,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1712587134] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:26:30,298 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:26:30,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-06 21:26:30,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822368434] [2021-10-06 21:26:30,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 21:26:30,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:26:30,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 21:26:30,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:26:30,301 INFO L87 Difference]: Start difference. First operand 34 states and 73 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:30,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:26:30,322 INFO L93 Difference]: Finished difference Result 57 states and 116 transitions. [2021-10-06 21:26:30,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:26:30,323 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 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 [2021-10-06 21:26:30,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:26:30,325 INFO L225 Difference]: With dead ends: 57 [2021-10-06 21:26:30,325 INFO L226 Difference]: Without dead ends: 42 [2021-10-06 21:26:30,326 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:26:30,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-10-06 21:26:30,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2021-10-06 21:26:30,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 2.1463414634146343) internal successors, (88), 41 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:30,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 88 transitions. [2021-10-06 21:26:30,343 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 88 transitions. Word has length 13 [2021-10-06 21:26:30,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:26:30,344 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 88 transitions. [2021-10-06 21:26:30,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:30,344 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 88 transitions. [2021-10-06 21:26:30,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-06 21:26:30,345 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:26:30,345 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:26:30,359 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-10-06 21:26:30,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:26:30,558 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:26:30,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:26:30,559 INFO L82 PathProgramCache]: Analyzing trace with hash 741230091, now seen corresponding path program 1 times [2021-10-06 21:26:30,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:26:30,560 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [384520123] [2021-10-06 21:26:30,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:26:30,560 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:26:30,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:26:30,563 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) [2021-10-06 21:26:30,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-06 21:26:30,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:26:30,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-06 21:26:30,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:26:30,759 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:30,760 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:26:30,890 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:30,891 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:26:30,891 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [384520123] [2021-10-06 21:26:30,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [384520123] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:26:30,891 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:26:30,891 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-10-06 21:26:30,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328305227] [2021-10-06 21:26:30,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-06 21:26:30,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:26:30,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-06 21:26:30,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-10-06 21:26:30,897 INFO L87 Difference]: Start difference. First operand 42 states and 88 transitions. Second operand has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:31,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:26:31,145 INFO L93 Difference]: Finished difference Result 82 states and 175 transitions. [2021-10-06 21:26:31,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-06 21:26:31,149 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-06 21:26:31,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:26:31,150 INFO L225 Difference]: With dead ends: 82 [2021-10-06 21:26:31,150 INFO L226 Difference]: Without dead ends: 82 [2021-10-06 21:26:31,151 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 190.7ms TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:26:31,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-10-06 21:26:31,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 48. [2021-10-06 21:26:31,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 2.1702127659574466) internal successors, (102), 47 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:31,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 102 transitions. [2021-10-06 21:26:31,155 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 102 transitions. Word has length 14 [2021-10-06 21:26:31,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:26:31,156 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 102 transitions. [2021-10-06 21:26:31,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:31,156 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 102 transitions. [2021-10-06 21:26:31,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-06 21:26:31,157 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:26:31,157 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:26:31,183 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-06 21:26:31,384 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 [2021-10-06 21:26:31,385 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:26:31,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:26:31,385 INFO L82 PathProgramCache]: Analyzing trace with hash 596890927, now seen corresponding path program 2 times [2021-10-06 21:26:31,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:26:31,386 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2019379201] [2021-10-06 21:26:31,386 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:26:31,387 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:26:31,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:26:31,388 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) [2021-10-06 21:26:31,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-06 21:26:31,471 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:26:31,472 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:26:31,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-06 21:26:31,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:26:31,568 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:31,568 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:26:31,674 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:31,675 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:26:31,675 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2019379201] [2021-10-06 21:26:31,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2019379201] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:26:31,675 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:26:31,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-10-06 21:26:31,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271552954] [2021-10-06 21:26:31,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-06 21:26:31,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:26:31,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-06 21:26:31,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-10-06 21:26:31,677 INFO L87 Difference]: Start difference. First operand 48 states and 102 transitions. Second operand has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:31,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:26:31,840 INFO L93 Difference]: Finished difference Result 100 states and 202 transitions. [2021-10-06 21:26:31,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-06 21:26:31,841 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-06 21:26:31,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:26:31,843 INFO L225 Difference]: With dead ends: 100 [2021-10-06 21:26:31,843 INFO L226 Difference]: Without dead ends: 100 [2021-10-06 21:26:31,843 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 113.7ms TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2021-10-06 21:26:31,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2021-10-06 21:26:31,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 54. [2021-10-06 21:26:31,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 2.3207547169811322) internal successors, (123), 53 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:31,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 123 transitions. [2021-10-06 21:26:31,848 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 123 transitions. Word has length 14 [2021-10-06 21:26:31,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:26:31,848 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 123 transitions. [2021-10-06 21:26:31,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:31,848 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 123 transitions. [2021-10-06 21:26:31,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-06 21:26:31,849 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:26:31,849 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:26:31,872 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-06 21:26:32,072 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 [2021-10-06 21:26:32,072 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:26:32,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:26:32,073 INFO L82 PathProgramCache]: Analyzing trace with hash -200024193, now seen corresponding path program 3 times [2021-10-06 21:26:32,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:26:32,073 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [44220160] [2021-10-06 21:26:32,074 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:26:32,074 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:26:32,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:26:32,075 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) [2021-10-06 21:26:32,110 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-06 21:26:32,169 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-06 21:26:32,169 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:26:32,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-06 21:26:32,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:26:32,233 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:32,233 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:26:32,289 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:32,289 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:26:32,289 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [44220160] [2021-10-06 21:26:32,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [44220160] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:26:32,290 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:26:32,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-10-06 21:26:32,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330054462] [2021-10-06 21:26:32,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-06 21:26:32,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:26:32,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-06 21:26:32,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-10-06 21:26:32,291 INFO L87 Difference]: Start difference. First operand 54 states and 123 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:32,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:26:32,491 INFO L93 Difference]: Finished difference Result 72 states and 154 transitions. [2021-10-06 21:26:32,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-06 21:26:32,492 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-06 21:26:32,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:26:32,495 INFO L225 Difference]: With dead ends: 72 [2021-10-06 21:26:32,495 INFO L226 Difference]: Without dead ends: 70 [2021-10-06 21:26:32,496 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 75.2ms TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:26:32,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-10-06 21:26:32,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 54. [2021-10-06 21:26:32,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 2.2830188679245285) internal successors, (121), 53 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:32,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 121 transitions. [2021-10-06 21:26:32,500 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 121 transitions. Word has length 14 [2021-10-06 21:26:32,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:26:32,500 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 121 transitions. [2021-10-06 21:26:32,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:32,501 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 121 transitions. [2021-10-06 21:26:32,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-06 21:26:32,502 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:26:32,502 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:26:32,514 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-06 21:26:32,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:26:32,713 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:26:32,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:26:32,715 INFO L82 PathProgramCache]: Analyzing trace with hash -552887737, now seen corresponding path program 4 times [2021-10-06 21:26:32,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:26:32,715 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [409408256] [2021-10-06 21:26:32,715 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:26:32,716 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:26:32,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:26:32,717 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:26:32,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-06 21:26:32,784 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:26:32,784 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:26:32,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-06 21:26:32,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:26:32,878 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:32,879 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:26:32,966 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:32,966 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:26:32,966 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [409408256] [2021-10-06 21:26:32,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [409408256] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:26:32,967 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:26:32,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-10-06 21:26:32,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431805340] [2021-10-06 21:26:32,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-06 21:26:32,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:26:32,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-06 21:26:32,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-10-06 21:26:32,969 INFO L87 Difference]: Start difference. First operand 54 states and 121 transitions. Second operand has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 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) [2021-10-06 21:26:33,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:26:33,178 INFO L93 Difference]: Finished difference Result 116 states and 237 transitions. [2021-10-06 21:26:33,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-06 21:26:33,180 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 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 14 [2021-10-06 21:26:33,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:26:33,181 INFO L225 Difference]: With dead ends: 116 [2021-10-06 21:26:33,181 INFO L226 Difference]: Without dead ends: 116 [2021-10-06 21:26:33,181 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 101.8ms TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2021-10-06 21:26:33,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-10-06 21:26:33,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 54. [2021-10-06 21:26:33,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 2.2830188679245285) internal successors, (121), 53 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:33,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 121 transitions. [2021-10-06 21:26:33,188 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 121 transitions. Word has length 14 [2021-10-06 21:26:33,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:26:33,190 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 121 transitions. [2021-10-06 21:26:33,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 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) [2021-10-06 21:26:33,190 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 121 transitions. [2021-10-06 21:26:33,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-06 21:26:33,193 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:26:33,193 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:26:33,204 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-06 21:26:33,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:26:33,394 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:26:33,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:26:33,395 INFO L82 PathProgramCache]: Analyzing trace with hash -1349802857, now seen corresponding path program 5 times [2021-10-06 21:26:33,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:26:33,396 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [35424364] [2021-10-06 21:26:33,396 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:26:33,396 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:26:33,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:26:33,398 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:26:33,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-06 21:26:33,491 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:26:33,491 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:26:33,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-06 21:26:33,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:26:33,548 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:33,548 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:26:33,601 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:33,601 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:26:33,601 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [35424364] [2021-10-06 21:26:33,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [35424364] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:26:33,602 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:26:33,602 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-10-06 21:26:33,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458832471] [2021-10-06 21:26:33,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-06 21:26:33,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:26:33,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-06 21:26:33,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-06 21:26:33,604 INFO L87 Difference]: Start difference. First operand 54 states and 121 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:33,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:26:33,814 INFO L93 Difference]: Finished difference Result 88 states and 183 transitions. [2021-10-06 21:26:33,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-06 21:26:33,816 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-06 21:26:33,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:26:33,818 INFO L225 Difference]: With dead ends: 88 [2021-10-06 21:26:33,818 INFO L226 Difference]: Without dead ends: 86 [2021-10-06 21:26:33,818 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 88.4ms TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-10-06 21:26:33,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-10-06 21:26:33,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 52. [2021-10-06 21:26:33,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 2.2745098039215685) internal successors, (116), 51 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:33,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 116 transitions. [2021-10-06 21:26:33,823 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 116 transitions. Word has length 14 [2021-10-06 21:26:33,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:26:33,823 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 116 transitions. [2021-10-06 21:26:33,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:33,823 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 116 transitions. [2021-10-06 21:26:33,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-06 21:26:33,824 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:26:33,824 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:26:33,835 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-10-06 21:26:34,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:26:34,035 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:26:34,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:26:34,036 INFO L82 PathProgramCache]: Analyzing trace with hash 158036165, now seen corresponding path program 6 times [2021-10-06 21:26:34,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:26:34,037 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [626372222] [2021-10-06 21:26:34,037 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:26:34,037 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:26:34,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:26:34,038 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) [2021-10-06 21:26:34,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-06 21:26:34,135 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-06 21:26:34,135 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:26:34,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-06 21:26:34,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:26:34,186 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:34,186 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:26:34,226 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:34,227 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:26:34,227 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [626372222] [2021-10-06 21:26:34,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [626372222] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:26:34,230 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:26:34,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-10-06 21:26:34,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292786279] [2021-10-06 21:26:34,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:26:34,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:26:34,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:26:34,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-06 21:26:34,235 INFO L87 Difference]: Start difference. First operand 52 states and 116 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:34,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:26:34,314 INFO L93 Difference]: Finished difference Result 58 states and 128 transitions. [2021-10-06 21:26:34,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:26:34,319 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-06 21:26:34,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:26:34,320 INFO L225 Difference]: With dead ends: 58 [2021-10-06 21:26:34,320 INFO L226 Difference]: Without dead ends: 54 [2021-10-06 21:26:34,321 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 48.3ms TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-10-06 21:26:34,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-10-06 21:26:34,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 48. [2021-10-06 21:26:34,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 2.297872340425532) internal successors, (108), 47 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:34,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 108 transitions. [2021-10-06 21:26:34,324 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 108 transitions. Word has length 14 [2021-10-06 21:26:34,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:26:34,324 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 108 transitions. [2021-10-06 21:26:34,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:34,325 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 108 transitions. [2021-10-06 21:26:34,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-06 21:26:34,326 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:26:34,326 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:26:34,338 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-06 21:26:34,538 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 [2021-10-06 21:26:34,538 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:26:34,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:26:34,539 INFO L82 PathProgramCache]: Analyzing trace with hash 1526876411, now seen corresponding path program 1 times [2021-10-06 21:26:34,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:26:34,540 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1662410519] [2021-10-06 21:26:34,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:26:34,541 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:26:34,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:26:34,542 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) [2021-10-06 21:26:34,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-06 21:26:34,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:26:34,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-06 21:26:34,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:26:34,672 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:34,672 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:26:34,719 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:34,720 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:26:34,720 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1662410519] [2021-10-06 21:26:34,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1662410519] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:26:34,720 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:26:34,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 2 [2021-10-06 21:26:34,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667439768] [2021-10-06 21:26:34,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:26:34,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:26:34,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:26:34,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:26:34,722 INFO L87 Difference]: Start difference. First operand 48 states and 108 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 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) [2021-10-06 21:26:34,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:26:34,750 INFO L93 Difference]: Finished difference Result 91 states and 195 transitions. [2021-10-06 21:26:34,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-06 21:26:34,751 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 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 15 [2021-10-06 21:26:34,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:26:34,752 INFO L225 Difference]: With dead ends: 91 [2021-10-06 21:26:34,752 INFO L226 Difference]: Without dead ends: 72 [2021-10-06 21:26:34,752 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.4ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:26:34,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-10-06 21:26:34,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 64. [2021-10-06 21:26:34,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 2.2222222222222223) internal successors, (140), 63 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:34,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 140 transitions. [2021-10-06 21:26:34,756 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 140 transitions. Word has length 15 [2021-10-06 21:26:34,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:26:34,756 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 140 transitions. [2021-10-06 21:26:34,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 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) [2021-10-06 21:26:34,756 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 140 transitions. [2021-10-06 21:26:34,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 21:26:34,757 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:26:34,757 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:26:34,770 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-06 21:26:34,970 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 [2021-10-06 21:26:34,970 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:26:34,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:26:34,970 INFO L82 PathProgramCache]: Analyzing trace with hash -379864498, now seen corresponding path program 2 times [2021-10-06 21:26:34,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:26:34,971 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [363420679] [2021-10-06 21:26:34,971 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:26:34,971 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:26:34,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:26:34,972 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) [2021-10-06 21:26:35,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-06 21:26:35,090 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:26:35,090 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:26:35,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 21:26:35,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:26:35,224 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:35,224 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:26:35,506 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:35,506 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:26:35,506 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [363420679] [2021-10-06 21:26:35,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [363420679] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:26:35,506 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:26:35,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-10-06 21:26:35,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898594696] [2021-10-06 21:26:35,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-06 21:26:35,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:26:35,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-06 21:26:35,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-10-06 21:26:35,508 INFO L87 Difference]: Start difference. First operand 64 states and 140 transitions. Second operand has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 14 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:36,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:26:36,059 INFO L93 Difference]: Finished difference Result 154 states and 341 transitions. [2021-10-06 21:26:36,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 21:26:36,059 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 14 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-06 21:26:36,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:26:36,061 INFO L225 Difference]: With dead ends: 154 [2021-10-06 21:26:36,061 INFO L226 Difference]: Without dead ends: 154 [2021-10-06 21:26:36,062 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 508.0ms TimeCoverageRelationStatistics Valid=175, Invalid=425, Unknown=0, NotChecked=0, Total=600 [2021-10-06 21:26:36,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-10-06 21:26:36,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 70. [2021-10-06 21:26:36,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 2.2318840579710146) internal successors, (154), 69 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:36,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 154 transitions. [2021-10-06 21:26:36,066 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 154 transitions. Word has length 16 [2021-10-06 21:26:36,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:26:36,067 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 154 transitions. [2021-10-06 21:26:36,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 14 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:36,067 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 154 transitions. [2021-10-06 21:26:36,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 21:26:36,068 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:26:36,068 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:26:36,090 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-06 21:26:36,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:26:36,269 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:26:36,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:26:36,270 INFO L82 PathProgramCache]: Analyzing trace with hash 1103521160, now seen corresponding path program 3 times [2021-10-06 21:26:36,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:26:36,271 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1333380353] [2021-10-06 21:26:36,271 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:26:36,272 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:26:36,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:26:36,273 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:26:36,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-06 21:26:36,384 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-06 21:26:36,385 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:26:36,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 21:26:36,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:26:36,553 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:36,553 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:26:36,937 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:36,937 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:26:36,937 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1333380353] [2021-10-06 21:26:36,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1333380353] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:26:36,938 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:26:36,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-10-06 21:26:36,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683816411] [2021-10-06 21:26:36,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-06 21:26:36,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:26:36,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-06 21:26:36,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2021-10-06 21:26:36,943 INFO L87 Difference]: Start difference. First operand 70 states and 154 transitions. Second operand has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 14 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:38,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:26:38,199 INFO L93 Difference]: Finished difference Result 174 states and 379 transitions. [2021-10-06 21:26:38,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-06 21:26:38,200 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 14 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-06 21:26:38,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:26:38,202 INFO L225 Difference]: With dead ends: 174 [2021-10-06 21:26:38,202 INFO L226 Difference]: Without dead ends: 166 [2021-10-06 21:26:38,202 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 1163.2ms TimeCoverageRelationStatistics Valid=154, Invalid=398, Unknown=0, NotChecked=0, Total=552 [2021-10-06 21:26:38,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-10-06 21:26:38,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 86. [2021-10-06 21:26:38,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 2.4235294117647057) internal successors, (206), 85 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:38,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 206 transitions. [2021-10-06 21:26:38,207 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 206 transitions. Word has length 16 [2021-10-06 21:26:38,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:26:38,208 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 206 transitions. [2021-10-06 21:26:38,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 14 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:38,208 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 206 transitions. [2021-10-06 21:26:38,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 21:26:38,209 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:26:38,209 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:26:38,221 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-06 21:26:38,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:26:38,421 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:26:38,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:26:38,422 INFO L82 PathProgramCache]: Analyzing trace with hash 306606040, now seen corresponding path program 4 times [2021-10-06 21:26:38,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:26:38,423 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [249546558] [2021-10-06 21:26:38,423 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:26:38,423 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:26:38,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:26:38,425 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) [2021-10-06 21:26:38,428 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-06 21:26:38,542 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:26:38,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:26:38,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-06 21:26:38,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:26:38,688 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:38,688 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:26:38,861 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:38,861 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:26:38,861 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [249546558] [2021-10-06 21:26:38,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [249546558] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:26:38,862 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:26:38,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-10-06 21:26:38,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174575744] [2021-10-06 21:26:38,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:26:38,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:26:38,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:26:38,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:26:38,863 INFO L87 Difference]: Start difference. First operand 86 states and 206 transitions. Second operand has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:39,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:26:39,196 INFO L93 Difference]: Finished difference Result 104 states and 245 transitions. [2021-10-06 21:26:39,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-06 21:26:39,198 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-06 21:26:39,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:26:39,199 INFO L225 Difference]: With dead ends: 104 [2021-10-06 21:26:39,199 INFO L226 Difference]: Without dead ends: 100 [2021-10-06 21:26:39,200 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 331.2ms TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2021-10-06 21:26:39,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2021-10-06 21:26:39,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 92. [2021-10-06 21:26:39,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 2.4285714285714284) internal successors, (221), 91 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:39,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 221 transitions. [2021-10-06 21:26:39,204 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 221 transitions. Word has length 16 [2021-10-06 21:26:39,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:26:39,205 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 221 transitions. [2021-10-06 21:26:39,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:39,205 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 221 transitions. [2021-10-06 21:26:39,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 21:26:39,206 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:26:39,206 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:26:39,218 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2021-10-06 21:26:39,418 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 [2021-10-06 21:26:39,419 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:26:39,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:26:39,419 INFO L82 PathProgramCache]: Analyzing trace with hash 1958827814, now seen corresponding path program 5 times [2021-10-06 21:26:39,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:26:39,420 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [581419931] [2021-10-06 21:26:39,420 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:26:39,420 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:26:39,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:26:39,421 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) [2021-10-06 21:26:39,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-06 21:26:39,550 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:26:39,550 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:26:39,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 21:26:39,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:26:39,735 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:39,735 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:26:40,171 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:40,172 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:26:40,172 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [581419931] [2021-10-06 21:26:40,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [581419931] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:26:40,172 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:26:40,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-10-06 21:26:40,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941921796] [2021-10-06 21:26:40,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-06 21:26:40,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:26:40,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-06 21:26:40,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-10-06 21:26:40,174 INFO L87 Difference]: Start difference. First operand 92 states and 221 transitions. Second operand has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 14 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:42,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:26:42,578 INFO L93 Difference]: Finished difference Result 324 states and 751 transitions. [2021-10-06 21:26:42,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-06 21:26:42,579 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 14 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-06 21:26:42,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:26:42,582 INFO L225 Difference]: With dead ends: 324 [2021-10-06 21:26:42,583 INFO L226 Difference]: Without dead ends: 324 [2021-10-06 21:26:42,583 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 2172.4ms TimeCoverageRelationStatistics Valid=287, Invalid=903, Unknown=0, NotChecked=0, Total=1190 [2021-10-06 21:26:42,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2021-10-06 21:26:42,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 108. [2021-10-06 21:26:42,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 107 states have (on average 2.6261682242990654) internal successors, (281), 107 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:42,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 281 transitions. [2021-10-06 21:26:42,591 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 281 transitions. Word has length 16 [2021-10-06 21:26:42,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:26:42,592 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 281 transitions. [2021-10-06 21:26:42,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 14 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:42,592 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 281 transitions. [2021-10-06 21:26:42,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 21:26:42,593 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:26:42,593 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:26:42,610 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2021-10-06 21:26:42,805 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 [2021-10-06 21:26:42,806 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:26:42,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:26:42,806 INFO L82 PathProgramCache]: Analyzing trace with hash -2089013440, now seen corresponding path program 6 times [2021-10-06 21:26:42,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:26:42,807 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1619437035] [2021-10-06 21:26:42,807 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:26:42,808 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:26:42,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:26:42,809 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) [2021-10-06 21:26:42,810 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-06 21:26:42,969 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-06 21:26:42,969 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:26:42,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 21:26:42,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:26:43,077 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:43,078 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:26:43,407 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:43,407 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:26:43,407 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1619437035] [2021-10-06 21:26:43,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1619437035] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:26:43,408 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:26:43,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2021-10-06 21:26:43,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137062670] [2021-10-06 21:26:43,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-06 21:26:43,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:26:43,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-06 21:26:43,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-10-06 21:26:43,411 INFO L87 Difference]: Start difference. First operand 108 states and 281 transitions. Second operand has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:44,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:26:44,506 INFO L93 Difference]: Finished difference Result 214 states and 509 transitions. [2021-10-06 21:26:44,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-06 21:26:44,507 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-06 21:26:44,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:26:44,512 INFO L225 Difference]: With dead ends: 214 [2021-10-06 21:26:44,512 INFO L226 Difference]: Without dead ends: 212 [2021-10-06 21:26:44,513 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 810.4ms TimeCoverageRelationStatistics Valid=134, Invalid=418, Unknown=0, NotChecked=0, Total=552 [2021-10-06 21:26:44,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2021-10-06 21:26:44,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 134. [2021-10-06 21:26:44,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 133 states have (on average 2.706766917293233) internal successors, (360), 133 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:44,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 360 transitions. [2021-10-06 21:26:44,521 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 360 transitions. Word has length 16 [2021-10-06 21:26:44,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:26:44,521 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 360 transitions. [2021-10-06 21:26:44,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:44,521 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 360 transitions. [2021-10-06 21:26:44,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 21:26:44,522 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:26:44,522 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:26:44,535 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Ended with exit code 0 [2021-10-06 21:26:44,735 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 [2021-10-06 21:26:44,735 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:26:44,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:26:44,736 INFO L82 PathProgramCache]: Analyzing trace with hash -436791666, now seen corresponding path program 7 times [2021-10-06 21:26:44,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:26:44,737 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1248187642] [2021-10-06 21:26:44,738 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:26:44,738 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:26:44,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:26:44,739 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) [2021-10-06 21:26:44,743 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-06 21:26:44,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:26:44,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 21:26:44,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:26:45,057 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:45,058 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:26:45,430 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:45,430 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:26:45,431 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1248187642] [2021-10-06 21:26:45,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1248187642] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:26:45,431 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:26:45,431 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-10-06 21:26:45,431 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696570967] [2021-10-06 21:26:45,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-06 21:26:45,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:26:45,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-06 21:26:45,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-10-06 21:26:45,433 INFO L87 Difference]: Start difference. First operand 134 states and 360 transitions. Second operand has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 14 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:47,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:26:47,299 INFO L93 Difference]: Finished difference Result 264 states and 659 transitions. [2021-10-06 21:26:47,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 21:26:47,300 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 14 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-06 21:26:47,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:26:47,303 INFO L225 Difference]: With dead ends: 264 [2021-10-06 21:26:47,303 INFO L226 Difference]: Without dead ends: 264 [2021-10-06 21:26:47,304 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1493.8ms TimeCoverageRelationStatistics Valid=134, Invalid=328, Unknown=0, NotChecked=0, Total=462 [2021-10-06 21:26:47,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2021-10-06 21:26:47,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 146. [2021-10-06 21:26:47,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 145 states have (on average 2.793103448275862) internal successors, (405), 145 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:47,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 405 transitions. [2021-10-06 21:26:47,312 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 405 transitions. Word has length 16 [2021-10-06 21:26:47,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:26:47,313 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 405 transitions. [2021-10-06 21:26:47,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 14 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:47,313 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 405 transitions. [2021-10-06 21:26:47,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 21:26:47,314 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:26:47,314 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:26:47,327 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-06 21:26:47,526 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 [2021-10-06 21:26:47,527 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:26:47,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:26:47,528 INFO L82 PathProgramCache]: Analyzing trace with hash 1075252824, now seen corresponding path program 8 times [2021-10-06 21:26:47,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:26:47,529 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [76892564] [2021-10-06 21:26:47,529 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:26:47,529 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:26:47,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:26:47,531 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) [2021-10-06 21:26:47,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-06 21:26:47,684 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:26:47,684 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:26:47,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 21:26:47,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:26:47,803 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:47,803 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:26:48,130 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:48,131 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:26:48,131 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [76892564] [2021-10-06 21:26:48,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [76892564] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:26:48,131 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:26:48,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2021-10-06 21:26:48,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258422342] [2021-10-06 21:26:48,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-06 21:26:48,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:26:48,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-06 21:26:48,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-10-06 21:26:48,134 INFO L87 Difference]: Start difference. First operand 146 states and 405 transitions. Second operand has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:49,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:26:49,079 INFO L93 Difference]: Finished difference Result 178 states and 480 transitions. [2021-10-06 21:26:49,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 21:26:49,081 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-06 21:26:49,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:26:49,083 INFO L225 Difference]: With dead ends: 178 [2021-10-06 21:26:49,084 INFO L226 Difference]: Without dead ends: 176 [2021-10-06 21:26:49,084 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 822.4ms TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:26:49,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2021-10-06 21:26:49,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 152. [2021-10-06 21:26:49,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 151 states have (on average 2.80794701986755) internal successors, (424), 151 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:49,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 424 transitions. [2021-10-06 21:26:49,091 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 424 transitions. Word has length 16 [2021-10-06 21:26:49,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:26:49,091 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 424 transitions. [2021-10-06 21:26:49,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:49,091 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 424 transitions. [2021-10-06 21:26:49,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 21:26:49,092 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:26:49,092 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:26:49,105 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-10-06 21:26:49,305 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 [2021-10-06 21:26:49,305 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:26:49,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:26:49,306 INFO L82 PathProgramCache]: Analyzing trace with hash -1567492698, now seen corresponding path program 9 times [2021-10-06 21:26:49,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:26:49,307 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1245248468] [2021-10-06 21:26:49,307 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:26:49,307 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:26:49,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:26:49,309 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) [2021-10-06 21:26:49,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-06 21:26:49,465 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-06 21:26:49,465 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:26:49,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 21:26:49,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:26:49,609 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:49,610 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:26:49,905 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:49,905 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:26:49,905 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1245248468] [2021-10-06 21:26:49,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1245248468] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:26:49,906 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:26:49,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-10-06 21:26:49,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305940684] [2021-10-06 21:26:49,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-06 21:26:49,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:26:49,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-06 21:26:49,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-10-06 21:26:49,907 INFO L87 Difference]: Start difference. First operand 152 states and 424 transitions. Second operand has 14 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 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) [2021-10-06 21:26:51,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:26:51,677 INFO L93 Difference]: Finished difference Result 266 states and 661 transitions. [2021-10-06 21:26:51,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-06 21:26:51,678 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 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 [2021-10-06 21:26:51,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:26:51,680 INFO L225 Difference]: With dead ends: 266 [2021-10-06 21:26:51,681 INFO L226 Difference]: Without dead ends: 266 [2021-10-06 21:26:51,681 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 1335.8ms TimeCoverageRelationStatistics Valid=126, Invalid=336, Unknown=0, NotChecked=0, Total=462 [2021-10-06 21:26:51,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2021-10-06 21:26:51,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 152. [2021-10-06 21:26:51,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 151 states have (on average 2.794701986754967) internal successors, (422), 151 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:51,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 422 transitions. [2021-10-06 21:26:51,689 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 422 transitions. Word has length 16 [2021-10-06 21:26:51,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:26:51,690 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 422 transitions. [2021-10-06 21:26:51,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 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) [2021-10-06 21:26:51,690 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 422 transitions. [2021-10-06 21:26:51,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:26:51,691 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:26:51,691 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:26:51,703 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-10-06 21:26:51,903 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 [2021-10-06 21:26:51,904 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:26:51,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:26:51,904 INFO L82 PathProgramCache]: Analyzing trace with hash 1132682520, now seen corresponding path program 10 times [2021-10-06 21:26:51,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:26:51,905 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [840870993] [2021-10-06 21:26:51,905 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:26:51,906 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:26:51,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:26:51,907 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) [2021-10-06 21:26:51,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-10-06 21:26:52,065 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:26:52,065 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:26:52,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-06 21:26:52,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:26:52,123 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:52,123 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:26:52,166 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:52,166 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:26:52,166 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [840870993] [2021-10-06 21:26:52,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [840870993] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:26:52,167 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:26:52,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2021-10-06 21:26:52,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626799303] [2021-10-06 21:26:52,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-06 21:26:52,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:26:52,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-06 21:26:52,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-06 21:26:52,169 INFO L87 Difference]: Start difference. First operand 152 states and 422 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:52,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:26:52,207 INFO L93 Difference]: Finished difference Result 251 states and 653 transitions. [2021-10-06 21:26:52,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-06 21:26:52,207 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-06 21:26:52,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:26:52,210 INFO L225 Difference]: With dead ends: 251 [2021-10-06 21:26:52,210 INFO L226 Difference]: Without dead ends: 228 [2021-10-06 21:26:52,210 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.0ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-06 21:26:52,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2021-10-06 21:26:52,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 184. [2021-10-06 21:26:52,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 183 states have (on average 2.737704918032787) internal successors, (501), 183 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:52,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 501 transitions. [2021-10-06 21:26:52,228 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 501 transitions. Word has length 17 [2021-10-06 21:26:52,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:26:52,228 INFO L470 AbstractCegarLoop]: Abstraction has 184 states and 501 transitions. [2021-10-06 21:26:52,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:52,229 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 501 transitions. [2021-10-06 21:26:52,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:26:52,230 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:26:52,230 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:26:52,242 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-10-06 21:26:52,442 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 [2021-10-06 21:26:52,442 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:26:52,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:26:52,443 INFO L82 PathProgramCache]: Analyzing trace with hash -1589262933, now seen corresponding path program 11 times [2021-10-06 21:26:52,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:26:52,444 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1336182221] [2021-10-06 21:26:52,444 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:26:52,445 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:26:52,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:26:52,446 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) [2021-10-06 21:26:52,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-06 21:26:52,622 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:26:52,622 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:26:52,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:26:52,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:26:52,833 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:52,833 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:26:53,276 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:53,277 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:26:53,277 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1336182221] [2021-10-06 21:26:53,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1336182221] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:26:53,277 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:26:53,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-10-06 21:26:53,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308829868] [2021-10-06 21:26:53,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-06 21:26:53,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:26:53,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-06 21:26:53,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2021-10-06 21:26:53,278 INFO L87 Difference]: Start difference. First operand 184 states and 501 transitions. Second operand has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:54,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:26:54,256 INFO L93 Difference]: Finished difference Result 348 states and 871 transitions. [2021-10-06 21:26:54,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-06 21:26:54,257 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 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 [2021-10-06 21:26:54,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:26:54,260 INFO L225 Difference]: With dead ends: 348 [2021-10-06 21:26:54,260 INFO L226 Difference]: Without dead ends: 348 [2021-10-06 21:26:54,261 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 969.9ms TimeCoverageRelationStatistics Valid=301, Invalid=889, Unknown=0, NotChecked=0, Total=1190 [2021-10-06 21:26:54,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2021-10-06 21:26:54,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 190. [2021-10-06 21:26:54,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 189 states have (on average 2.7248677248677247) internal successors, (515), 189 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:54,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 515 transitions. [2021-10-06 21:26:54,271 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 515 transitions. Word has length 18 [2021-10-06 21:26:54,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:26:54,272 INFO L470 AbstractCegarLoop]: Abstraction has 190 states and 515 transitions. [2021-10-06 21:26:54,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:54,272 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 515 transitions. [2021-10-06 21:26:54,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:26:54,273 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:26:54,273 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:26:54,288 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-10-06 21:26:54,483 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 [2021-10-06 21:26:54,484 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:26:54,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:26:54,484 INFO L82 PathProgramCache]: Analyzing trace with hash -1186015345, now seen corresponding path program 12 times [2021-10-06 21:26:54,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:26:54,485 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [619724338] [2021-10-06 21:26:54,485 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:26:54,485 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:26:54,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:26:54,487 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) [2021-10-06 21:26:54,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-10-06 21:26:54,672 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-06 21:26:54,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:26:54,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:26:54,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:26:54,898 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:54,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:26:55,419 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:55,419 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:26:55,419 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [619724338] [2021-10-06 21:26:55,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [619724338] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:26:55,419 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:26:55,419 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-10-06 21:26:55,419 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576403943] [2021-10-06 21:26:55,420 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-06 21:26:55,420 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:26:55,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-06 21:26:55,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2021-10-06 21:26:55,421 INFO L87 Difference]: Start difference. First operand 190 states and 515 transitions. Second operand has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:57,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:26:57,252 INFO L93 Difference]: Finished difference Result 340 states and 856 transitions. [2021-10-06 21:26:57,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-06 21:26:57,253 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 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 [2021-10-06 21:26:57,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:26:57,256 INFO L225 Difference]: With dead ends: 340 [2021-10-06 21:26:57,256 INFO L226 Difference]: Without dead ends: 332 [2021-10-06 21:26:57,257 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 1744.6ms TimeCoverageRelationStatistics Valid=243, Invalid=813, Unknown=0, NotChecked=0, Total=1056 [2021-10-06 21:26:57,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2021-10-06 21:26:57,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 214. [2021-10-06 21:26:57,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 213 states have (on average 2.7934272300469485) internal successors, (595), 213 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:57,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 595 transitions. [2021-10-06 21:26:57,268 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 595 transitions. Word has length 18 [2021-10-06 21:26:57,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:26:57,268 INFO L470 AbstractCegarLoop]: Abstraction has 214 states and 595 transitions. [2021-10-06 21:26:57,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:57,269 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 595 transitions. [2021-10-06 21:26:57,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:26:57,270 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:26:57,270 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:26:57,282 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-10-06 21:26:57,482 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 [2021-10-06 21:26:57,482 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:26:57,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:26:57,483 INFO L82 PathProgramCache]: Analyzing trace with hash -1982930465, now seen corresponding path program 13 times [2021-10-06 21:26:57,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:26:57,484 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1396656533] [2021-10-06 21:26:57,484 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:26:57,484 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:26:57,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:26:57,486 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) [2021-10-06 21:26:57,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-10-06 21:26:57,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:26:57,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 21:26:57,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:26:57,830 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:57,830 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:26:58,123 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:58,123 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:26:58,123 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1396656533] [2021-10-06 21:26:58,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1396656533] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:26:58,124 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:26:58,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-10-06 21:26:58,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997311401] [2021-10-06 21:26:58,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:26:58,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:26:58,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:26:58,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:26:58,126 INFO L87 Difference]: Start difference. First operand 214 states and 595 transitions. Second operand has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 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) [2021-10-06 21:26:58,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:26:58,904 INFO L93 Difference]: Finished difference Result 260 states and 740 transitions. [2021-10-06 21:26:58,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-06 21:26:58,906 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 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 18 [2021-10-06 21:26:58,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:26:58,908 INFO L225 Difference]: With dead ends: 260 [2021-10-06 21:26:58,908 INFO L226 Difference]: Without dead ends: 256 [2021-10-06 21:26:58,909 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 741.8ms TimeCoverageRelationStatistics Valid=191, Invalid=511, Unknown=0, NotChecked=0, Total=702 [2021-10-06 21:26:58,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2021-10-06 21:26:58,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 228. [2021-10-06 21:26:58,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 227 states have (on average 2.8634361233480177) internal successors, (650), 227 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:58,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 650 transitions. [2021-10-06 21:26:58,918 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 650 transitions. Word has length 18 [2021-10-06 21:26:58,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:26:58,918 INFO L470 AbstractCegarLoop]: Abstraction has 228 states and 650 transitions. [2021-10-06 21:26:58,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 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) [2021-10-06 21:26:58,919 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 650 transitions. [2021-10-06 21:26:58,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:26:58,920 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:26:58,920 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:26:58,933 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-10-06 21:26:59,132 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 [2021-10-06 21:26:59,133 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:26:59,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:26:59,134 INFO L82 PathProgramCache]: Analyzing trace with hash -330708691, now seen corresponding path program 14 times [2021-10-06 21:26:59,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:26:59,134 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [299692071] [2021-10-06 21:26:59,134 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:26:59,135 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:26:59,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:26:59,136 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) [2021-10-06 21:26:59,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-10-06 21:26:59,317 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:26:59,317 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:26:59,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:26:59,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:26:59,520 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:59,521 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:27:00,004 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:27:00,005 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:27:00,005 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [299692071] [2021-10-06 21:27:00,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [299692071] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:27:00,005 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:27:00,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-10-06 21:27:00,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378573450] [2021-10-06 21:27:00,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-06 21:27:00,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:27:00,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-06 21:27:00,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2021-10-06 21:27:00,007 INFO L87 Difference]: Start difference. First operand 228 states and 650 transitions. Second operand has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:27:03,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:27:03,145 INFO L93 Difference]: Finished difference Result 418 states and 1048 transitions. [2021-10-06 21:27:03,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-06 21:27:03,146 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 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 [2021-10-06 21:27:03,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:27:03,149 INFO L225 Difference]: With dead ends: 418 [2021-10-06 21:27:03,150 INFO L226 Difference]: Without dead ends: 402 [2021-10-06 21:27:03,150 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 2942.5ms TimeCoverageRelationStatistics Valid=294, Invalid=896, Unknown=0, NotChecked=0, Total=1190 [2021-10-06 21:27:03,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2021-10-06 21:27:03,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 242. [2021-10-06 21:27:03,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 241 states have (on average 2.892116182572614) internal successors, (697), 241 states have internal predecessors, (697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:27:03,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 697 transitions. [2021-10-06 21:27:03,162 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 697 transitions. Word has length 18 [2021-10-06 21:27:03,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:27:03,163 INFO L470 AbstractCegarLoop]: Abstraction has 242 states and 697 transitions. [2021-10-06 21:27:03,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:27:03,163 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 697 transitions. [2021-10-06 21:27:03,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:27:03,164 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:27:03,164 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:27:03,177 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-10-06 21:27:03,377 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 [2021-10-06 21:27:03,377 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:27:03,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:27:03,378 INFO L82 PathProgramCache]: Analyzing trace with hash 413993807, now seen corresponding path program 15 times [2021-10-06 21:27:03,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:27:03,378 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1073074252] [2021-10-06 21:27:03,378 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:27:03,379 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:27:03,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:27:03,380 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) [2021-10-06 21:27:03,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-10-06 21:27:03,577 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-06 21:27:03,577 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:27:03,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:27:03,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:27:03,780 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:27:03,780 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:27:04,339 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:27:04,340 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:27:04,340 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1073074252] [2021-10-06 21:27:04,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1073074252] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:27:04,340 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:27:04,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-10-06 21:27:04,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326333787] [2021-10-06 21:27:04,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-06 21:27:04,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:27:04,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-06 21:27:04,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2021-10-06 21:27:04,343 INFO L87 Difference]: Start difference. First operand 242 states and 697 transitions. Second operand has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:27:10,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:27:10,561 INFO L93 Difference]: Finished difference Result 746 states and 1916 transitions. [2021-10-06 21:27:10,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-10-06 21:27:10,562 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 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 [2021-10-06 21:27:10,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:27:10,566 INFO L225 Difference]: With dead ends: 746 [2021-10-06 21:27:10,567 INFO L226 Difference]: Without dead ends: 746 [2021-10-06 21:27:10,568 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 882 ImplicationChecksByTransitivity, 5725.4ms TimeCoverageRelationStatistics Valid=752, Invalid=2908, Unknown=0, NotChecked=0, Total=3660 [2021-10-06 21:27:10,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2021-10-06 21:27:10,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 266. [2021-10-06 21:27:10,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 265 states have (on average 2.9849056603773585) internal successors, (791), 265 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:27:10,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 791 transitions. [2021-10-06 21:27:10,586 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 791 transitions. Word has length 18 [2021-10-06 21:27:10,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:27:10,587 INFO L470 AbstractCegarLoop]: Abstraction has 266 states and 791 transitions. [2021-10-06 21:27:10,587 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:27:10,587 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 791 transitions. [2021-10-06 21:27:10,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:27:10,588 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:27:10,588 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:27:10,603 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-10-06 21:27:10,801 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 [2021-10-06 21:27:10,801 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:27:10,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:27:10,802 INFO L82 PathProgramCache]: Analyzing trace with hash 307237325, now seen corresponding path program 16 times [2021-10-06 21:27:10,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:27:10,802 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1712374325] [2021-10-06 21:27:10,803 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:27:10,803 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:27:10,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:27:10,804 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) [2021-10-06 21:27:10,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-10-06 21:27:10,989 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:27:10,989 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:27:10,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 21:27:10,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:27:11,181 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:27:11,182 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:27:11,569 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:27:11,569 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:27:11,569 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1712374325] [2021-10-06 21:27:11,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1712374325] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:27:11,569 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:27:11,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-10-06 21:27:11,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912328966] [2021-10-06 21:27:11,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:27:11,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:27:11,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:27:11,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:27:11,570 INFO L87 Difference]: Start difference. First operand 266 states and 791 transitions. Second operand has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 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) [2021-10-06 21:27:13,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:27:13,543 INFO L93 Difference]: Finished difference Result 506 states and 1350 transitions. [2021-10-06 21:27:13,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-06 21:27:13,544 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 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 18 [2021-10-06 21:27:13,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:27:13,547 INFO L225 Difference]: With dead ends: 506 [2021-10-06 21:27:13,547 INFO L226 Difference]: Without dead ends: 502 [2021-10-06 21:27:13,548 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 1817.8ms TimeCoverageRelationStatistics Valid=329, Invalid=861, Unknown=0, NotChecked=0, Total=1190 [2021-10-06 21:27:13,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2021-10-06 21:27:13,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 296. [2021-10-06 21:27:13,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 295 states have (on average 3.0305084745762714) internal successors, (894), 295 states have internal predecessors, (894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:27:13,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 894 transitions. [2021-10-06 21:27:13,563 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 894 transitions. Word has length 18 [2021-10-06 21:27:13,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:27:13,563 INFO L470 AbstractCegarLoop]: Abstraction has 296 states and 894 transitions. [2021-10-06 21:27:13,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 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) [2021-10-06 21:27:13,563 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 894 transitions. [2021-10-06 21:27:13,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:27:13,565 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:27:13,565 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:27:13,578 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-10-06 21:27:13,778 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 [2021-10-06 21:27:13,778 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:27:13,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:27:13,779 INFO L82 PathProgramCache]: Analyzing trace with hash 1103557799, now seen corresponding path program 17 times [2021-10-06 21:27:13,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:27:13,780 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [599790017] [2021-10-06 21:27:13,780 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:27:13,780 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:27:13,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:27:13,781 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) [2021-10-06 21:27:13,782 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-10-06 21:27:14,019 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-06 21:27:14,019 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:27:14,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:27:14,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:27:14,199 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:27:14,199 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:27:14,766 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:27:14,767 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:27:14,767 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [599790017] [2021-10-06 21:27:14,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [599790017] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:27:14,767 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:27:14,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-10-06 21:27:14,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991072630] [2021-10-06 21:27:14,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-06 21:27:14,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:27:14,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-06 21:27:14,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2021-10-06 21:27:14,769 INFO L87 Difference]: Start difference. First operand 296 states and 894 transitions. Second operand has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:27:23,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:27:23,771 INFO L93 Difference]: Finished difference Result 728 states and 1775 transitions. [2021-10-06 21:27:23,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-10-06 21:27:23,773 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 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 [2021-10-06 21:27:23,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:27:23,778 INFO L225 Difference]: With dead ends: 728 [2021-10-06 21:27:23,778 INFO L226 Difference]: Without dead ends: 708 [2021-10-06 21:27:23,779 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 582 ImplicationChecksByTransitivity, 8235.6ms TimeCoverageRelationStatistics Valid=512, Invalid=2038, Unknown=0, NotChecked=0, Total=2550 [2021-10-06 21:27:23,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2021-10-06 21:27:23,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 324. [2021-10-06 21:27:23,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 323 states have (on average 3.065015479876161) internal successors, (990), 323 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:27:23,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 990 transitions. [2021-10-06 21:27:23,797 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 990 transitions. Word has length 18 [2021-10-06 21:27:23,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:27:23,797 INFO L470 AbstractCegarLoop]: Abstraction has 324 states and 990 transitions. [2021-10-06 21:27:23,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:27:23,797 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 990 transitions. [2021-10-06 21:27:23,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:27:23,799 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:27:23,799 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:27:23,814 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-10-06 21:27:24,012 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 [2021-10-06 21:27:24,013 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:27:24,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:27:24,013 INFO L82 PathProgramCache]: Analyzing trace with hash 1859192103, now seen corresponding path program 18 times [2021-10-06 21:27:24,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:27:24,014 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1186646027] [2021-10-06 21:27:24,014 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:27:24,015 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:27:24,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:27:24,016 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) [2021-10-06 21:27:24,017 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-10-06 21:27:24,242 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-06 21:27:24,242 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:27:24,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:27:24,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:27:24,458 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:27:24,458 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:27:24,989 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:27:24,989 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:27:24,989 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1186646027] [2021-10-06 21:27:24,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1186646027] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:27:24,989 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:27:24,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-10-06 21:27:24,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199347391] [2021-10-06 21:27:24,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-06 21:27:24,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:27:24,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-06 21:27:24,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2021-10-06 21:27:24,990 INFO L87 Difference]: Start difference. First operand 324 states and 990 transitions. Second operand has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:27:27,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:27:27,303 INFO L93 Difference]: Finished difference Result 498 states and 1388 transitions. [2021-10-06 21:27:27,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-06 21:27:27,304 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 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 [2021-10-06 21:27:27,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:27:27,307 INFO L225 Difference]: With dead ends: 498 [2021-10-06 21:27:27,308 INFO L226 Difference]: Without dead ends: 490 [2021-10-06 21:27:27,308 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 1951.4ms TimeCoverageRelationStatistics Valid=325, Invalid=1007, Unknown=0, NotChecked=0, Total=1332 [2021-10-06 21:27:27,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2021-10-06 21:27:27,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 350. [2021-10-06 21:27:27,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 349 states have (on average 3.1146131805157595) internal successors, (1087), 349 states have internal predecessors, (1087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:27:27,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 1087 transitions. [2021-10-06 21:27:27,323 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 1087 transitions. Word has length 18 [2021-10-06 21:27:27,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:27:27,323 INFO L470 AbstractCegarLoop]: Abstraction has 350 states and 1087 transitions. [2021-10-06 21:27:27,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:27:27,323 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 1087 transitions. [2021-10-06 21:27:27,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:27:27,325 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:27:27,325 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:27:27,339 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-10-06 21:27:27,538 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 [2021-10-06 21:27:27,539 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:27:27,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:27:27,540 INFO L82 PathProgramCache]: Analyzing trace with hash 1062276983, now seen corresponding path program 19 times [2021-10-06 21:27:27,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:27:27,540 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1667172030] [2021-10-06 21:27:27,540 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:27:27,541 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:27:27,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:27:27,542 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) [2021-10-06 21:27:27,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-10-06 21:27:27,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:27:27,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 21:27:27,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:27:27,947 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:27:27,948 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:27:28,268 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:27:28,268 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:27:28,268 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1667172030] [2021-10-06 21:27:28,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1667172030] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:27:28,269 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:27:28,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-10-06 21:27:28,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147303793] [2021-10-06 21:27:28,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:27:28,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:27:28,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:27:28,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:27:28,270 INFO L87 Difference]: Start difference. First operand 350 states and 1087 transitions. Second operand has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 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) [2021-10-06 21:27:29,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:27:29,786 INFO L93 Difference]: Finished difference Result 424 states and 1312 transitions. [2021-10-06 21:27:29,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-06 21:27:29,787 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 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 18 [2021-10-06 21:27:29,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:27:29,790 INFO L225 Difference]: With dead ends: 424 [2021-10-06 21:27:29,790 INFO L226 Difference]: Without dead ends: 420 [2021-10-06 21:27:29,790 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 1330.0ms TimeCoverageRelationStatistics Valid=263, Invalid=667, Unknown=0, NotChecked=0, Total=930 [2021-10-06 21:27:29,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2021-10-06 21:27:29,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 362. [2021-10-06 21:27:29,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 361 states have (on average 3.14404432132964) internal successors, (1135), 361 states have internal predecessors, (1135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:27:29,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 1135 transitions. [2021-10-06 21:27:29,803 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 1135 transitions. Word has length 18 [2021-10-06 21:27:29,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:27:29,804 INFO L470 AbstractCegarLoop]: Abstraction has 362 states and 1135 transitions. [2021-10-06 21:27:29,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 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) [2021-10-06 21:27:29,804 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 1135 transitions. [2021-10-06 21:27:29,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:27:29,806 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:27:29,806 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:27:29,819 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2021-10-06 21:27:30,018 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 [2021-10-06 21:27:30,019 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:27:30,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:27:30,019 INFO L82 PathProgramCache]: Analyzing trace with hash -1521482359, now seen corresponding path program 20 times [2021-10-06 21:27:30,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:27:30,020 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [661634187] [2021-10-06 21:27:30,020 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:27:30,020 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:27:30,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:27:30,021 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) [2021-10-06 21:27:30,046 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-10-06 21:27:30,277 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:27:30,277 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:27:30,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:27:30,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:27:30,451 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:27:30,451 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:27:30,938 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:27:30,938 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:27:30,938 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [661634187] [2021-10-06 21:27:30,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [661634187] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:27:30,938 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:27:30,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 17 [2021-10-06 21:27:30,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231806508] [2021-10-06 21:27:30,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-06 21:27:30,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:27:30,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-06 21:27:30,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2021-10-06 21:27:30,940 INFO L87 Difference]: Start difference. First operand 362 states and 1135 transitions. Second operand has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:27:33,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:27:33,504 INFO L93 Difference]: Finished difference Result 526 states and 1467 transitions. [2021-10-06 21:27:33,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-06 21:27:33,505 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:27:33,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:27:33,508 INFO L225 Difference]: With dead ends: 526 [2021-10-06 21:27:33,508 INFO L226 Difference]: Without dead ends: 514 [2021-10-06 21:27:33,509 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 2338.8ms TimeCoverageRelationStatistics Valid=315, Invalid=875, Unknown=0, NotChecked=0, Total=1190 [2021-10-06 21:27:33,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2021-10-06 21:27:33,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 378. [2021-10-06 21:27:33,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 377 states have (on average 3.1485411140583555) internal successors, (1187), 377 states have internal predecessors, (1187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:27:33,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 1187 transitions. [2021-10-06 21:27:33,524 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 1187 transitions. Word has length 18 [2021-10-06 21:27:33,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:27:33,524 INFO L470 AbstractCegarLoop]: Abstraction has 378 states and 1187 transitions. [2021-10-06 21:27:33,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:27:33,524 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 1187 transitions. [2021-10-06 21:27:33,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:27:33,526 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:27:33,526 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:27:33,538 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2021-10-06 21:27:33,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:27:33,739 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:27:33,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:27:33,739 INFO L82 PathProgramCache]: Analyzing trace with hash -835766041, now seen corresponding path program 21 times [2021-10-06 21:27:33,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:27:33,740 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [506609910] [2021-10-06 21:27:33,740 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:27:33,740 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:27:33,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:27:33,742 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:27:33,743 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-10-06 21:27:33,985 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-06 21:27:33,985 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:27:33,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:27:33,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:27:34,213 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:27:34,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:27:34,771 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:27:34,771 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:27:34,772 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [506609910] [2021-10-06 21:27:34,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [506609910] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:27:34,772 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:27:34,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-10-06 21:27:34,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557335888] [2021-10-06 21:27:34,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-06 21:27:34,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:27:34,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-06 21:27:34,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2021-10-06 21:27:34,773 INFO L87 Difference]: Start difference. First operand 378 states and 1187 transitions. Second operand has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:27:37,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:27:37,935 INFO L93 Difference]: Finished difference Result 602 states and 1687 transitions. [2021-10-06 21:27:37,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-06 21:27:37,936 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 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 [2021-10-06 21:27:37,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:27:37,939 INFO L225 Difference]: With dead ends: 602 [2021-10-06 21:27:37,939 INFO L226 Difference]: Without dead ends: 602 [2021-10-06 21:27:37,940 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 2856.5ms TimeCoverageRelationStatistics Valid=399, Invalid=1161, Unknown=0, NotChecked=0, Total=1560 [2021-10-06 21:27:37,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2021-10-06 21:27:37,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 392. [2021-10-06 21:27:37,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 391 states have (on average 3.166240409207161) internal successors, (1238), 391 states have internal predecessors, (1238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:27:37,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 1238 transitions. [2021-10-06 21:27:37,955 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 1238 transitions. Word has length 18 [2021-10-06 21:27:37,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:27:37,956 INFO L470 AbstractCegarLoop]: Abstraction has 392 states and 1238 transitions. [2021-10-06 21:27:37,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:27:37,956 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 1238 transitions. [2021-10-06 21:27:37,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:27:37,958 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:27:37,958 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:27:37,973 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2021-10-06 21:27:38,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:27:38,171 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:27:38,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:27:38,172 INFO L82 PathProgramCache]: Analyzing trace with hash 160401521, now seen corresponding path program 22 times [2021-10-06 21:27:38,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:27:38,172 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [489684180] [2021-10-06 21:27:38,173 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:27:38,173 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:27:38,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:27:38,174 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:27:38,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-10-06 21:27:38,395 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:27:38,396 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:27:38,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:27:38,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:27:38,598 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:27:38,598 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:27:39,253 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:27:39,253 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:27:39,253 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [489684180] [2021-10-06 21:27:39,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [489684180] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:27:39,253 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:27:39,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-10-06 21:27:39,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282129555] [2021-10-06 21:27:39,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-06 21:27:39,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:27:39,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-06 21:27:39,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2021-10-06 21:27:39,255 INFO L87 Difference]: Start difference. First operand 392 states and 1238 transitions. Second operand has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:27:44,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:27:44,733 INFO L93 Difference]: Finished difference Result 698 states and 1987 transitions. [2021-10-06 21:27:44,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-06 21:27:44,734 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 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 [2021-10-06 21:27:44,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:27:44,738 INFO L225 Difference]: With dead ends: 698 [2021-10-06 21:27:44,738 INFO L226 Difference]: Without dead ends: 686 [2021-10-06 21:27:44,739 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 4246.2ms TimeCoverageRelationStatistics Valid=432, Invalid=1208, Unknown=0, NotChecked=0, Total=1640 [2021-10-06 21:27:44,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2021-10-06 21:27:44,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 472. [2021-10-06 21:27:44,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 472 states, 471 states have (on average 3.2653927813163484) internal successors, (1538), 471 states have internal predecessors, (1538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:27:44,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 1538 transitions. [2021-10-06 21:27:44,756 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 1538 transitions. Word has length 18 [2021-10-06 21:27:44,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:27:44,757 INFO L470 AbstractCegarLoop]: Abstraction has 472 states and 1538 transitions. [2021-10-06 21:27:44,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:27:44,757 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 1538 transitions. [2021-10-06 21:27:44,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:27:44,759 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:27:44,759 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:27:44,771 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Ended with exit code 0 [2021-10-06 21:27:44,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:27:44,972 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:27:44,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:27:44,973 INFO L82 PathProgramCache]: Analyzing trace with hash 1771342479, now seen corresponding path program 23 times [2021-10-06 21:27:44,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:27:44,974 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1607848612] [2021-10-06 21:27:44,974 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:27:44,975 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:27:44,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:27:44,976 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:27:44,978 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-10-06 21:27:45,206 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-06 21:27:45,206 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:27:45,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-06 21:27:45,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:27:45,415 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:27:45,415 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:27:46,088 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:27:46,088 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:27:46,088 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1607848612] [2021-10-06 21:27:46,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1607848612] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:27:46,088 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:27:46,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-10-06 21:27:46,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916883918] [2021-10-06 21:27:46,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-06 21:27:46,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:27:46,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-06 21:27:46,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2021-10-06 21:27:46,090 INFO L87 Difference]: Start difference. First operand 472 states and 1538 transitions. Second operand has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:27:50,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:27:50,688 INFO L93 Difference]: Finished difference Result 702 states and 2041 transitions. [2021-10-06 21:27:50,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-06 21:27:50,689 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 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 [2021-10-06 21:27:50,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:27:50,693 INFO L225 Difference]: With dead ends: 702 [2021-10-06 21:27:50,693 INFO L226 Difference]: Without dead ends: 690 [2021-10-06 21:27:50,694 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 3917.7ms TimeCoverageRelationStatistics Valid=360, Invalid=1122, Unknown=0, NotChecked=0, Total=1482 [2021-10-06 21:27:50,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2021-10-06 21:27:50,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 498. [2021-10-06 21:27:50,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 497 states have (on average 3.265593561368209) internal successors, (1623), 497 states have internal predecessors, (1623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:27:50,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 1623 transitions. [2021-10-06 21:27:50,709 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 1623 transitions. Word has length 18 [2021-10-06 21:27:50,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:27:50,710 INFO L470 AbstractCegarLoop]: Abstraction has 498 states and 1623 transitions. [2021-10-06 21:27:50,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:27:50,710 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 1623 transitions. [2021-10-06 21:27:50,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:27:50,712 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:27:50,712 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:27:50,725 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2021-10-06 21:27:50,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:27:50,926 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:27:50,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:27:50,927 INFO L82 PathProgramCache]: Analyzing trace with hash 974427359, now seen corresponding path program 24 times [2021-10-06 21:27:50,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:27:50,927 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2015760450] [2021-10-06 21:27:50,928 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:27:50,928 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:27:50,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:27:50,929 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:27:50,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2021-10-06 21:27:51,219 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-06 21:27:51,219 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:27:51,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:27:51,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:27:51,374 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:27:51,374 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:27:52,084 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:27:52,085 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:27:52,085 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2015760450] [2021-10-06 21:27:52,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2015760450] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:27:52,085 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:27:52,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 17 [2021-10-06 21:27:52,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374041692] [2021-10-06 21:27:52,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-06 21:27:52,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:27:52,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-06 21:27:52,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2021-10-06 21:27:52,087 INFO L87 Difference]: Start difference. First operand 498 states and 1623 transitions. Second operand has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:27:58,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:27:58,266 INFO L93 Difference]: Finished difference Result 802 states and 2394 transitions. [2021-10-06 21:27:58,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-06 21:27:58,267 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:27:58,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:27:58,273 INFO L225 Difference]: With dead ends: 802 [2021-10-06 21:27:58,273 INFO L226 Difference]: Without dead ends: 800 [2021-10-06 21:27:58,274 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 4663.3ms TimeCoverageRelationStatistics Valid=340, Invalid=1300, Unknown=0, NotChecked=0, Total=1640 [2021-10-06 21:27:58,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 800 states. [2021-10-06 21:27:58,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 800 to 590. [2021-10-06 21:27:58,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 590 states, 589 states have (on average 3.3870967741935485) internal successors, (1995), 589 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:27:58,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 1995 transitions. [2021-10-06 21:27:58,304 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 1995 transitions. Word has length 18 [2021-10-06 21:27:58,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:27:58,304 INFO L470 AbstractCegarLoop]: Abstraction has 590 states and 1995 transitions. [2021-10-06 21:27:58,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:27:58,305 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 1995 transitions. [2021-10-06 21:27:58,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:27:58,307 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:27:58,307 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:27:58,320 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2021-10-06 21:27:58,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:27:58,520 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:27:58,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:27:58,522 INFO L82 PathProgramCache]: Analyzing trace with hash -923615665, now seen corresponding path program 25 times [2021-10-06 21:27:58,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:27:58,523 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1650130907] [2021-10-06 21:27:58,523 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:27:58,523 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:27:58,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:27:58,524 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:27:58,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2021-10-06 21:27:58,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:27:58,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:27:58,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:27:58,977 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:27:58,977 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:27:59,536 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:27:59,536 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:27:59,536 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1650130907] [2021-10-06 21:27:59,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1650130907] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:27:59,537 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:27:59,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-10-06 21:27:59,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410435283] [2021-10-06 21:27:59,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-06 21:27:59,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:27:59,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-06 21:27:59,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2021-10-06 21:27:59,538 INFO L87 Difference]: Start difference. First operand 590 states and 1995 transitions. Second operand has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:05,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:28:05,361 INFO L93 Difference]: Finished difference Result 860 states and 2595 transitions. [2021-10-06 21:28:05,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-06 21:28:05,362 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 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 [2021-10-06 21:28:05,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:28:05,367 INFO L225 Difference]: With dead ends: 860 [2021-10-06 21:28:05,367 INFO L226 Difference]: Without dead ends: 860 [2021-10-06 21:28:05,368 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 4886.5ms TimeCoverageRelationStatistics Valid=353, Invalid=1053, Unknown=0, NotChecked=0, Total=1406 [2021-10-06 21:28:05,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 860 states. [2021-10-06 21:28:05,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 860 to 606. [2021-10-06 21:28:05,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 606 states, 605 states have (on average 3.406611570247934) internal successors, (2061), 605 states have internal predecessors, (2061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:05,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606 states to 606 states and 2061 transitions. [2021-10-06 21:28:05,389 INFO L78 Accepts]: Start accepts. Automaton has 606 states and 2061 transitions. Word has length 18 [2021-10-06 21:28:05,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:28:05,389 INFO L470 AbstractCegarLoop]: Abstraction has 606 states and 2061 transitions. [2021-10-06 21:28:05,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:05,389 INFO L276 IsEmpty]: Start isEmpty. Operand 606 states and 2061 transitions. [2021-10-06 21:28:05,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:28:05,391 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:28:05,391 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:28:05,404 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Ended with exit code 0 [2021-10-06 21:28:05,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:28:05,597 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:28:05,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:28:05,598 INFO L82 PathProgramCache]: Analyzing trace with hash 183435657, now seen corresponding path program 26 times [2021-10-06 21:28:05,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:28:05,599 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1947175753] [2021-10-06 21:28:05,599 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:28:05,600 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:28:05,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:28:05,601 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:28:05,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2021-10-06 21:28:05,903 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:28:05,903 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:28:05,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:28:05,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:28:06,098 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:06,098 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:28:06,722 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:06,723 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:28:06,723 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1947175753] [2021-10-06 21:28:06,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1947175753] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:28:06,723 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:28:06,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-10-06 21:28:06,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440263455] [2021-10-06 21:28:06,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-06 21:28:06,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:28:06,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-06 21:28:06,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2021-10-06 21:28:06,725 INFO L87 Difference]: Start difference. First operand 606 states and 2061 transitions. Second operand has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:11,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:28:11,660 INFO L93 Difference]: Finished difference Result 874 states and 2672 transitions. [2021-10-06 21:28:11,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-06 21:28:11,660 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:28:11,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:28:11,665 INFO L225 Difference]: With dead ends: 874 [2021-10-06 21:28:11,665 INFO L226 Difference]: Without dead ends: 862 [2021-10-06 21:28:11,666 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 3681.9ms TimeCoverageRelationStatistics Valid=376, Invalid=1184, Unknown=0, NotChecked=0, Total=1560 [2021-10-06 21:28:11,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 862 states. [2021-10-06 21:28:11,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 862 to 642. [2021-10-06 21:28:11,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 641 states have (on average 3.418096723868955) internal successors, (2191), 641 states have internal predecessors, (2191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:11,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 2191 transitions. [2021-10-06 21:28:11,686 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 2191 transitions. Word has length 18 [2021-10-06 21:28:11,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:28:11,686 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 2191 transitions. [2021-10-06 21:28:11,686 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:11,686 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 2191 transitions. [2021-10-06 21:28:11,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:28:11,688 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:28:11,688 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:28:11,702 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Ended with exit code 0 [2021-10-06 21:28:11,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:28:11,902 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:28:11,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:28:11,903 INFO L82 PathProgramCache]: Analyzing trace with hash 1794376615, now seen corresponding path program 27 times [2021-10-06 21:28:11,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:28:11,903 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1393365666] [2021-10-06 21:28:11,903 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:28:11,904 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:28:11,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:28:11,905 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:28:11,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2021-10-06 21:28:12,215 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-06 21:28:12,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:28:12,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:28:12,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:28:12,407 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:12,407 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:28:12,920 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:12,921 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:28:12,921 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1393365666] [2021-10-06 21:28:12,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1393365666] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:28:12,921 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:28:12,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-10-06 21:28:12,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615528367] [2021-10-06 21:28:12,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-06 21:28:12,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:28:12,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-06 21:28:12,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2021-10-06 21:28:12,923 INFO L87 Difference]: Start difference. First operand 642 states and 2191 transitions. Second operand has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:18,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:28:18,578 INFO L93 Difference]: Finished difference Result 838 states and 2580 transitions. [2021-10-06 21:28:18,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-06 21:28:18,578 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:28:18,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:28:18,583 INFO L225 Difference]: With dead ends: 838 [2021-10-06 21:28:18,583 INFO L226 Difference]: Without dead ends: 826 [2021-10-06 21:28:18,584 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 4556.4ms TimeCoverageRelationStatistics Valid=328, Invalid=1004, Unknown=0, NotChecked=0, Total=1332 [2021-10-06 21:28:18,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 826 states. [2021-10-06 21:28:18,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 826 to 648. [2021-10-06 21:28:18,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 648 states, 647 states have (on average 3.4142194744976817) internal successors, (2209), 647 states have internal predecessors, (2209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:18,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 2209 transitions. [2021-10-06 21:28:18,603 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 2209 transitions. Word has length 18 [2021-10-06 21:28:18,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:28:18,603 INFO L470 AbstractCegarLoop]: Abstraction has 648 states and 2209 transitions. [2021-10-06 21:28:18,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:18,604 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 2209 transitions. [2021-10-06 21:28:18,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:28:18,606 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:28:18,606 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:28:18,620 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2021-10-06 21:28:18,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:28:18,820 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:28:18,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:28:18,821 INFO L82 PathProgramCache]: Analyzing trace with hash 997461495, now seen corresponding path program 28 times [2021-10-06 21:28:18,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:28:18,822 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2031206653] [2021-10-06 21:28:18,822 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:28:18,822 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:28:18,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:28:18,823 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:28:18,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2021-10-06 21:28:19,101 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:28:19,101 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:28:19,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 21:28:19,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:28:19,265 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:19,265 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:28:19,609 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:19,609 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:28:19,609 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2031206653] [2021-10-06 21:28:19,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2031206653] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:28:19,609 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:28:19,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-10-06 21:28:19,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888842697] [2021-10-06 21:28:19,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:28:19,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:28:19,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:28:19,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:28:19,611 INFO L87 Difference]: Start difference. First operand 648 states and 2209 transitions. Second operand has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:21,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:28:21,377 INFO L93 Difference]: Finished difference Result 712 states and 2387 transitions. [2021-10-06 21:28:21,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-06 21:28:21,378 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:28:21,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:28:21,382 INFO L225 Difference]: With dead ends: 712 [2021-10-06 21:28:21,382 INFO L226 Difference]: Without dead ends: 708 [2021-10-06 21:28:21,383 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 1207.7ms TimeCoverageRelationStatistics Valid=237, Invalid=633, Unknown=0, NotChecked=0, Total=870 [2021-10-06 21:28:21,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2021-10-06 21:28:21,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 652. [2021-10-06 21:28:21,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 652 states, 651 states have (on average 3.4116743471582183) internal successors, (2221), 651 states have internal predecessors, (2221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:21,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 2221 transitions. [2021-10-06 21:28:21,401 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 2221 transitions. Word has length 18 [2021-10-06 21:28:21,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:28:21,402 INFO L470 AbstractCegarLoop]: Abstraction has 652 states and 2221 transitions. [2021-10-06 21:28:21,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:21,402 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 2221 transitions. [2021-10-06 21:28:21,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:28:21,404 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:28:21,404 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:28:21,420 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2021-10-06 21:28:21,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:28:21,617 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:28:21,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:28:21,618 INFO L82 PathProgramCache]: Analyzing trace with hash -900581529, now seen corresponding path program 29 times [2021-10-06 21:28:21,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:28:21,619 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1620458537] [2021-10-06 21:28:21,619 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:28:21,619 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:28:21,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:28:21,620 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:28:21,622 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2021-10-06 21:28:21,898 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:28:21,898 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:28:21,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:28:21,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:28:22,096 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:22,096 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:28:22,693 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:22,693 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:28:22,694 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1620458537] [2021-10-06 21:28:22,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1620458537] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:28:22,694 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:28:22,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-10-06 21:28:22,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951335996] [2021-10-06 21:28:22,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-06 21:28:22,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:28:22,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-06 21:28:22,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2021-10-06 21:28:22,696 INFO L87 Difference]: Start difference. First operand 652 states and 2221 transitions. Second operand has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:32,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:28:32,704 INFO L93 Difference]: Finished difference Result 1040 states and 3105 transitions. [2021-10-06 21:28:32,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-10-06 21:28:32,705 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:28:32,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:28:32,712 INFO L225 Difference]: With dead ends: 1040 [2021-10-06 21:28:32,712 INFO L226 Difference]: Without dead ends: 1040 [2021-10-06 21:28:32,713 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 964 ImplicationChecksByTransitivity, 7303.2ms TimeCoverageRelationStatistics Valid=612, Invalid=2810, Unknown=0, NotChecked=0, Total=3422 [2021-10-06 21:28:32,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1040 states. [2021-10-06 21:28:32,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1040 to 708. [2021-10-06 21:28:32,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 708 states, 707 states have (on average 3.4384724186704383) internal successors, (2431), 707 states have internal predecessors, (2431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:32,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 708 states to 708 states and 2431 transitions. [2021-10-06 21:28:32,745 INFO L78 Accepts]: Start accepts. Automaton has 708 states and 2431 transitions. Word has length 18 [2021-10-06 21:28:32,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:28:32,746 INFO L470 AbstractCegarLoop]: Abstraction has 708 states and 2431 transitions. [2021-10-06 21:28:32,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:32,746 INFO L276 IsEmpty]: Start isEmpty. Operand 708 states and 2431 transitions. [2021-10-06 21:28:32,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-06 21:28:32,748 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:28:32,748 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:28:32,764 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2021-10-06 21:28:32,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:28:32,962 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:28:32,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:28:32,963 INFO L82 PathProgramCache]: Analyzing trace with hash -1998930597, now seen corresponding path program 30 times [2021-10-06 21:28:32,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:28:32,964 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [267930659] [2021-10-06 21:28:32,964 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:28:32,964 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:28:32,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:28:32,966 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:28:32,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2021-10-06 21:28:33,276 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-06 21:28:33,276 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:28:33,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-06 21:28:33,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:28:33,349 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:33,349 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:28:33,542 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:33,542 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:28:33,543 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [267930659] [2021-10-06 21:28:33,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [267930659] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:28:33,543 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:28:33,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6] total 8 [2021-10-06 21:28:33,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073349182] [2021-10-06 21:28:33,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-06 21:28:33,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:28:33,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-06 21:28:33,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-10-06 21:28:33,544 INFO L87 Difference]: Start difference. First operand 708 states and 2431 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:33,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:28:33,616 INFO L93 Difference]: Finished difference Result 937 states and 3132 transitions. [2021-10-06 21:28:33,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-06 21:28:33,617 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 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 [2021-10-06 21:28:33,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:28:33,623 INFO L225 Difference]: With dead ends: 937 [2021-10-06 21:28:33,623 INFO L226 Difference]: Without dead ends: 910 [2021-10-06 21:28:33,624 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 77.8ms TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-10-06 21:28:33,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 910 states. [2021-10-06 21:28:33,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 910 to 818. [2021-10-06 21:28:33,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 818 states, 817 states have (on average 3.429620563035496) internal successors, (2802), 817 states have internal predecessors, (2802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:33,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 818 states to 818 states and 2802 transitions. [2021-10-06 21:28:33,650 INFO L78 Accepts]: Start accepts. Automaton has 818 states and 2802 transitions. Word has length 19 [2021-10-06 21:28:33,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:28:33,650 INFO L470 AbstractCegarLoop]: Abstraction has 818 states and 2802 transitions. [2021-10-06 21:28:33,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:33,650 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states and 2802 transitions. [2021-10-06 21:28:33,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-06 21:28:33,653 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:28:33,653 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:28:33,667 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2021-10-06 21:28:33,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:28:33,868 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:28:33,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:28:33,868 INFO L82 PathProgramCache]: Analyzing trace with hash -1613386440, now seen corresponding path program 31 times [2021-10-06 21:28:33,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:28:33,869 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [945915380] [2021-10-06 21:28:33,869 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:28:33,870 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:28:33,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:28:33,871 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:28:33,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2021-10-06 21:28:34,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:28:34,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:28:34,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:28:34,373 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:34,374 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:28:34,879 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:34,880 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:28:34,880 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [945915380] [2021-10-06 21:28:34,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [945915380] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:28:34,880 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:28:34,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-10-06 21:28:34,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831914815] [2021-10-06 21:28:34,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-06 21:28:34,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:28:34,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-06 21:28:34,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2021-10-06 21:28:34,882 INFO L87 Difference]: Start difference. First operand 818 states and 2802 transitions. Second operand has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:37,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:28:37,707 INFO L93 Difference]: Finished difference Result 1136 states and 3508 transitions. [2021-10-06 21:28:37,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-06 21:28:37,709 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 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 [2021-10-06 21:28:37,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:28:37,718 INFO L225 Difference]: With dead ends: 1136 [2021-10-06 21:28:37,718 INFO L226 Difference]: Without dead ends: 1104 [2021-10-06 21:28:37,719 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 370 ImplicationChecksByTransitivity, 2602.1ms TimeCoverageRelationStatistics Valid=471, Invalid=1421, Unknown=0, NotChecked=0, Total=1892 [2021-10-06 21:28:37,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1104 states. [2021-10-06 21:28:37,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1104 to 832. [2021-10-06 21:28:37,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 832 states, 831 states have (on average 3.3971119133574006) internal successors, (2823), 831 states have internal predecessors, (2823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:37,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 832 states to 832 states and 2823 transitions. [2021-10-06 21:28:37,747 INFO L78 Accepts]: Start accepts. Automaton has 832 states and 2823 transitions. Word has length 19 [2021-10-06 21:28:37,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:28:37,747 INFO L470 AbstractCegarLoop]: Abstraction has 832 states and 2823 transitions. [2021-10-06 21:28:37,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:37,748 INFO L276 IsEmpty]: Start isEmpty. Operand 832 states and 2823 transitions. [2021-10-06 21:28:37,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-06 21:28:37,751 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:28:37,751 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:28:37,766 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2021-10-06 21:28:37,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:28:37,965 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:28:37,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:28:37,966 INFO L82 PathProgramCache]: Analyzing trace with hash -917332962, now seen corresponding path program 32 times [2021-10-06 21:28:37,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:28:37,966 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [560423514] [2021-10-06 21:28:37,967 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:28:37,967 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:28:37,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:28:37,968 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:28:37,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2021-10-06 21:28:38,341 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:28:38,341 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:28:38,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:28:38,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:28:38,588 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:38,588 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:28:39,169 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:39,169 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:28:39,170 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [560423514] [2021-10-06 21:28:39,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [560423514] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:28:39,170 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:28:39,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-10-06 21:28:39,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592106078] [2021-10-06 21:28:39,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:28:39,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:28:39,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:28:39,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:28:39,171 INFO L87 Difference]: Start difference. First operand 832 states and 2823 transitions. Second operand has 20 states, 20 states have (on average 1.65) internal successors, (33), 20 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:45,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:28:45,310 INFO L93 Difference]: Finished difference Result 1040 states and 3275 transitions. [2021-10-06 21:28:45,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-06 21:28:45,312 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.65) internal successors, (33), 20 states have internal predecessors, (33), 0 states have call successors, (0), 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 [2021-10-06 21:28:45,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:28:45,318 INFO L225 Difference]: With dead ends: 1040 [2021-10-06 21:28:45,318 INFO L226 Difference]: Without dead ends: 1020 [2021-10-06 21:28:45,319 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 5932.9ms TimeCoverageRelationStatistics Valid=434, Invalid=1288, Unknown=0, NotChecked=0, Total=1722 [2021-10-06 21:28:45,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1020 states. [2021-10-06 21:28:45,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1020 to 856. [2021-10-06 21:28:45,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 856 states, 855 states have (on average 3.3953216374269006) internal successors, (2903), 855 states have internal predecessors, (2903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:45,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 856 states to 856 states and 2903 transitions. [2021-10-06 21:28:45,347 INFO L78 Accepts]: Start accepts. Automaton has 856 states and 2903 transitions. Word has length 19 [2021-10-06 21:28:45,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:28:45,347 INFO L470 AbstractCegarLoop]: Abstraction has 856 states and 2903 transitions. [2021-10-06 21:28:45,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.65) internal successors, (33), 20 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:45,347 INFO L276 IsEmpty]: Start isEmpty. Operand 856 states and 2903 transitions. [2021-10-06 21:28:45,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-06 21:28:45,350 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:28:45,350 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:28:45,364 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Forceful destruction successful, exit code 0 [2021-10-06 21:28:45,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:28:45,564 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:28:45,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:28:45,565 INFO L82 PathProgramCache]: Analyzing trace with hash 742257016, now seen corresponding path program 33 times [2021-10-06 21:28:45,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:28:45,565 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1279738105] [2021-10-06 21:28:45,566 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:28:45,566 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:28:45,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:28:45,568 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:28:45,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2021-10-06 21:28:45,911 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-06 21:28:45,911 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:28:45,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:28:45,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:28:46,115 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:46,115 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:28:46,768 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:46,768 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:28:46,768 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1279738105] [2021-10-06 21:28:46,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1279738105] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:28:46,769 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:28:46,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 19 [2021-10-06 21:28:46,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420824869] [2021-10-06 21:28:46,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-06 21:28:46,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:28:46,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-06 21:28:46,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2021-10-06 21:28:46,770 INFO L87 Difference]: Start difference. First operand 856 states and 2903 transitions. Second operand has 19 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 19 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) [2021-10-06 21:28:51,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:28:51,572 INFO L93 Difference]: Finished difference Result 1104 states and 3459 transitions. [2021-10-06 21:28:51,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-06 21:28:51,573 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 19 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 19 [2021-10-06 21:28:51,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:28:51,578 INFO L225 Difference]: With dead ends: 1104 [2021-10-06 21:28:51,578 INFO L226 Difference]: Without dead ends: 1100 [2021-10-06 21:28:51,579 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 4422.1ms TimeCoverageRelationStatistics Valid=421, Invalid=1219, Unknown=0, NotChecked=0, Total=1640 [2021-10-06 21:28:51,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1100 states. [2021-10-06 21:28:51,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1100 to 898. [2021-10-06 21:28:51,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 898 states, 897 states have (on average 3.420289855072464) internal successors, (3068), 897 states have internal predecessors, (3068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:51,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 898 states to 898 states and 3068 transitions. [2021-10-06 21:28:51,605 INFO L78 Accepts]: Start accepts. Automaton has 898 states and 3068 transitions. Word has length 19 [2021-10-06 21:28:51,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:28:51,605 INFO L470 AbstractCegarLoop]: Abstraction has 898 states and 3068 transitions. [2021-10-06 21:28:51,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 19 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) [2021-10-06 21:28:51,606 INFO L276 IsEmpty]: Start isEmpty. Operand 898 states and 3068 transitions. [2021-10-06 21:28:51,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-06 21:28:51,622 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:28:51,622 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:28:51,637 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Forceful destruction successful, exit code 0 [2021-10-06 21:28:51,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:28:51,833 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:28:51,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:28:51,834 INFO L82 PathProgramCache]: Analyzing trace with hash -1005182586, now seen corresponding path program 34 times [2021-10-06 21:28:51,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:28:51,835 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1953502587] [2021-10-06 21:28:51,835 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:28:51,835 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:28:51,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:28:51,836 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:28:51,837 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2021-10-06 21:28:52,165 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:28:52,166 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:28:52,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-06 21:28:52,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:28:52,399 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:52,400 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:28:53,282 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:53,283 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:28:53,283 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1953502587] [2021-10-06 21:28:53,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1953502587] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:28:53,283 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:28:53,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-10-06 21:28:53,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7866508] [2021-10-06 21:28:53,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:28:53,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:28:53,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:28:53,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=283, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:28:53,285 INFO L87 Difference]: Start difference. First operand 898 states and 3068 transitions. Second operand has 20 states, 20 states have (on average 1.65) internal successors, (33), 20 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:59,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:28:59,242 INFO L93 Difference]: Finished difference Result 1142 states and 3616 transitions. [2021-10-06 21:28:59,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-06 21:28:59,243 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.65) internal successors, (33), 20 states have internal predecessors, (33), 0 states have call successors, (0), 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 [2021-10-06 21:28:59,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:28:59,249 INFO L225 Difference]: With dead ends: 1142 [2021-10-06 21:28:59,249 INFO L226 Difference]: Without dead ends: 1114 [2021-10-06 21:28:59,250 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 5635.5ms TimeCoverageRelationStatistics Valid=544, Invalid=1526, Unknown=0, NotChecked=0, Total=2070 [2021-10-06 21:28:59,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1114 states. [2021-10-06 21:28:59,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1114 to 922. [2021-10-06 21:28:59,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 922 states, 921 states have (on average 3.411509229098806) internal successors, (3142), 921 states have internal predecessors, (3142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:59,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 922 states to 922 states and 3142 transitions. [2021-10-06 21:28:59,272 INFO L78 Accepts]: Start accepts. Automaton has 922 states and 3142 transitions. Word has length 19 [2021-10-06 21:28:59,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:28:59,272 INFO L470 AbstractCegarLoop]: Abstraction has 922 states and 3142 transitions. [2021-10-06 21:28:59,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.65) internal successors, (33), 20 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:59,272 INFO L276 IsEmpty]: Start isEmpty. Operand 922 states and 3142 transitions. [2021-10-06 21:28:59,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-06 21:28:59,275 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:28:59,275 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:28:59,291 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (47)] Forceful destruction successful, exit code 0 [2021-10-06 21:28:59,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:28:59,489 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:28:59,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:28:59,489 INFO L82 PathProgramCache]: Analyzing trace with hash 654407392, now seen corresponding path program 35 times [2021-10-06 21:28:59,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:28:59,490 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1994326536] [2021-10-06 21:28:59,490 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:28:59,490 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:28:59,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:28:59,492 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:28:59,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2021-10-06 21:28:59,864 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:28:59,864 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:28:59,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 21:28:59,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:29:00,023 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:00,023 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:29:00,381 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:00,381 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:29:00,381 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1994326536] [2021-10-06 21:29:00,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1994326536] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:29:00,382 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:29:00,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-10-06 21:29:00,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031000145] [2021-10-06 21:29:00,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:29:00,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:29:00,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:29:00,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:29:00,384 INFO L87 Difference]: Start difference. First operand 922 states and 3142 transitions. Second operand has 16 states, 16 states have (on average 1.9375) internal successors, (31), 16 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:03,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:29:03,071 INFO L93 Difference]: Finished difference Result 1170 states and 3686 transitions. [2021-10-06 21:29:03,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-06 21:29:03,072 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.9375) internal successors, (31), 16 states have internal predecessors, (31), 0 states have call successors, (0), 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 [2021-10-06 21:29:03,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:29:03,076 INFO L225 Difference]: With dead ends: 1170 [2021-10-06 21:29:03,076 INFO L226 Difference]: Without dead ends: 1154 [2021-10-06 21:29:03,077 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 2078.7ms TimeCoverageRelationStatistics Valid=335, Invalid=1387, Unknown=0, NotChecked=0, Total=1722 [2021-10-06 21:29:03,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1154 states. [2021-10-06 21:29:03,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1154 to 882. [2021-10-06 21:29:03,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 882 states, 881 states have (on average 3.393870601589103) internal successors, (2990), 881 states have internal predecessors, (2990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:03,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 882 states to 882 states and 2990 transitions. [2021-10-06 21:29:03,096 INFO L78 Accepts]: Start accepts. Automaton has 882 states and 2990 transitions. Word has length 19 [2021-10-06 21:29:03,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:29:03,096 INFO L470 AbstractCegarLoop]: Abstraction has 882 states and 2990 transitions. [2021-10-06 21:29:03,096 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.9375) internal successors, (31), 16 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:03,096 INFO L276 IsEmpty]: Start isEmpty. Operand 882 states and 2990 transitions. [2021-10-06 21:29:03,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-06 21:29:03,098 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:29:03,098 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:29:03,109 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (48)] Forceful destruction successful, exit code 0 [2021-10-06 21:29:03,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:29:03,299 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:29:03,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:29:03,300 INFO L82 PathProgramCache]: Analyzing trace with hash -1748216234, now seen corresponding path program 36 times [2021-10-06 21:29:03,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:29:03,301 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1647759534] [2021-10-06 21:29:03,301 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:29:03,302 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:29:03,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:29:03,303 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:29:03,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2021-10-06 21:29:03,716 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-06 21:29:03,716 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:29:03,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-06 21:29:03,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:29:03,908 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:03,908 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:29:04,898 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:04,898 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:29:04,899 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1647759534] [2021-10-06 21:29:04,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1647759534] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:29:04,899 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:29:04,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 19 [2021-10-06 21:29:04,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396979049] [2021-10-06 21:29:04,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-06 21:29:04,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:29:04,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-06 21:29:04,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2021-10-06 21:29:04,900 INFO L87 Difference]: Start difference. First operand 882 states and 2990 transitions. Second operand has 19 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 19 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) [2021-10-06 21:29:11,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:29:11,169 INFO L93 Difference]: Finished difference Result 994 states and 3219 transitions. [2021-10-06 21:29:11,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-06 21:29:11,171 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 19 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 19 [2021-10-06 21:29:11,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:29:11,176 INFO L225 Difference]: With dead ends: 994 [2021-10-06 21:29:11,177 INFO L226 Difference]: Without dead ends: 992 [2021-10-06 21:29:11,177 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 5942.7ms TimeCoverageRelationStatistics Valid=285, Invalid=975, Unknown=0, NotChecked=0, Total=1260 [2021-10-06 21:29:11,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 992 states. [2021-10-06 21:29:11,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 992 to 904. [2021-10-06 21:29:11,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 904 states, 903 states have (on average 3.4031007751937983) internal successors, (3073), 903 states have internal predecessors, (3073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:11,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 3073 transitions. [2021-10-06 21:29:11,197 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 3073 transitions. Word has length 19 [2021-10-06 21:29:11,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:29:11,198 INFO L470 AbstractCegarLoop]: Abstraction has 904 states and 3073 transitions. [2021-10-06 21:29:11,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 19 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) [2021-10-06 21:29:11,198 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 3073 transitions. [2021-10-06 21:29:11,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-06 21:29:11,200 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:29:11,200 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:29:11,212 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (49)] Forceful destruction successful, exit code 0 [2021-10-06 21:29:11,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:29:11,401 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:29:11,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:29:11,402 INFO L82 PathProgramCache]: Analyzing trace with hash 1481333846, now seen corresponding path program 37 times [2021-10-06 21:29:11,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:29:11,403 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [814026446] [2021-10-06 21:29:11,403 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:29:11,403 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:29:11,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:29:11,405 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:29:11,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2021-10-06 21:29:11,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:29:11,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:29:11,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:29:11,949 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:11,950 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:29:12,548 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:12,548 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:29:12,548 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [814026446] [2021-10-06 21:29:12,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [814026446] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:29:12,549 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:29:12,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-10-06 21:29:12,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287694718] [2021-10-06 21:29:12,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-06 21:29:12,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:29:12,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-06 21:29:12,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2021-10-06 21:29:12,550 INFO L87 Difference]: Start difference. First operand 904 states and 3073 transitions. Second operand has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:15,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:29:15,932 INFO L93 Difference]: Finished difference Result 1226 states and 3767 transitions. [2021-10-06 21:29:15,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-06 21:29:15,933 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 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 [2021-10-06 21:29:15,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:29:15,936 INFO L225 Difference]: With dead ends: 1226 [2021-10-06 21:29:15,936 INFO L226 Difference]: Without dead ends: 1186 [2021-10-06 21:29:15,937 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 2781.2ms TimeCoverageRelationStatistics Valid=445, Invalid=1277, Unknown=0, NotChecked=0, Total=1722 [2021-10-06 21:29:15,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1186 states. [2021-10-06 21:29:15,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1186 to 908. [2021-10-06 21:29:15,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 908 states, 907 states have (on average 3.3572216097023153) internal successors, (3045), 907 states have internal predecessors, (3045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:15,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 908 states to 908 states and 3045 transitions. [2021-10-06 21:29:15,958 INFO L78 Accepts]: Start accepts. Automaton has 908 states and 3045 transitions. Word has length 19 [2021-10-06 21:29:15,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:29:15,958 INFO L470 AbstractCegarLoop]: Abstraction has 908 states and 3045 transitions. [2021-10-06 21:29:15,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:15,958 INFO L276 IsEmpty]: Start isEmpty. Operand 908 states and 3045 transitions. [2021-10-06 21:29:15,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-06 21:29:15,960 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:29:15,961 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:29:15,972 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (50)] Forceful destruction successful, exit code 0 [2021-10-06 21:29:16,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:29:16,162 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:29:16,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:29:16,162 INFO L82 PathProgramCache]: Analyzing trace with hash -2068930952, now seen corresponding path program 38 times [2021-10-06 21:29:16,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:29:16,163 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1444665670] [2021-10-06 21:29:16,163 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:29:16,164 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:29:16,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:29:16,165 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:29:16,166 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2021-10-06 21:29:16,578 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:29:16,579 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:29:16,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-06 21:29:16,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:29:16,765 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:16,765 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:29:17,492 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:17,493 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:29:17,493 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1444665670] [2021-10-06 21:29:17,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1444665670] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:29:17,493 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:29:17,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 19 [2021-10-06 21:29:17,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511442552] [2021-10-06 21:29:17,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-06 21:29:17,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:29:17,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-06 21:29:17,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2021-10-06 21:29:17,494 INFO L87 Difference]: Start difference. First operand 908 states and 3045 transitions. Second operand has 19 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 19 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) [2021-10-06 21:29:25,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:29:25,990 INFO L93 Difference]: Finished difference Result 1200 states and 3687 transitions. [2021-10-06 21:29:25,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-06 21:29:25,991 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 19 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 19 [2021-10-06 21:29:25,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:29:25,994 INFO L225 Difference]: With dead ends: 1200 [2021-10-06 21:29:25,994 INFO L226 Difference]: Without dead ends: 1200 [2021-10-06 21:29:25,995 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 7520.7ms TimeCoverageRelationStatistics Valid=462, Invalid=1178, Unknown=0, NotChecked=0, Total=1640 [2021-10-06 21:29:25,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1200 states. [2021-10-06 21:29:26,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1200 to 938. [2021-10-06 21:29:26,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 938 states, 937 states have (on average 3.378868729989328) internal successors, (3166), 937 states have internal predecessors, (3166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:26,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 938 states to 938 states and 3166 transitions. [2021-10-06 21:29:26,023 INFO L78 Accepts]: Start accepts. Automaton has 938 states and 3166 transitions. Word has length 19 [2021-10-06 21:29:26,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:29:26,023 INFO L470 AbstractCegarLoop]: Abstraction has 938 states and 3166 transitions. [2021-10-06 21:29:26,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 19 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) [2021-10-06 21:29:26,024 INFO L276 IsEmpty]: Start isEmpty. Operand 938 states and 3166 transitions. [2021-10-06 21:29:26,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-06 21:29:26,027 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:29:26,027 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:29:26,041 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (51)] Forceful destruction successful, exit code 0 [2021-10-06 21:29:26,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:29:26,241 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:29:26,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:29:26,242 INFO L82 PathProgramCache]: Analyzing trace with hash -1034158018, now seen corresponding path program 39 times [2021-10-06 21:29:26,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:29:26,243 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1582169823] [2021-10-06 21:29:26,243 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:29:26,243 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:29:26,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:29:26,244 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:29:26,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2021-10-06 21:29:26,673 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-06 21:29:26,673 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:29:26,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:29:26,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:29:26,873 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:26,874 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:29:27,468 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:27,468 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:29:27,468 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1582169823] [2021-10-06 21:29:27,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1582169823] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:29:27,469 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:29:27,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 19 [2021-10-06 21:29:27,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346512487] [2021-10-06 21:29:27,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-06 21:29:27,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:29:27,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-06 21:29:27,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2021-10-06 21:29:27,470 INFO L87 Difference]: Start difference. First operand 938 states and 3166 transitions. Second operand has 19 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 19 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) [2021-10-06 21:29:32,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:29:32,066 INFO L93 Difference]: Finished difference Result 1158 states and 3671 transitions. [2021-10-06 21:29:32,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-10-06 21:29:32,067 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 19 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 19 [2021-10-06 21:29:32,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:29:32,072 INFO L225 Difference]: With dead ends: 1158 [2021-10-06 21:29:32,072 INFO L226 Difference]: Without dead ends: 1156 [2021-10-06 21:29:32,073 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 3853.0ms TimeCoverageRelationStatistics Valid=428, Invalid=1734, Unknown=0, NotChecked=0, Total=2162 [2021-10-06 21:29:32,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1156 states. [2021-10-06 21:29:32,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1156 to 958. [2021-10-06 21:29:32,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 958 states, 957 states have (on average 3.389759665621735) internal successors, (3244), 957 states have internal predecessors, (3244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:32,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 958 states to 958 states and 3244 transitions. [2021-10-06 21:29:32,103 INFO L78 Accepts]: Start accepts. Automaton has 958 states and 3244 transitions. Word has length 19 [2021-10-06 21:29:32,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:29:32,103 INFO L470 AbstractCegarLoop]: Abstraction has 958 states and 3244 transitions. [2021-10-06 21:29:32,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 19 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) [2021-10-06 21:29:32,104 INFO L276 IsEmpty]: Start isEmpty. Operand 958 states and 3244 transitions. [2021-10-06 21:29:32,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-06 21:29:32,106 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:29:32,107 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:29:32,123 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (52)] Forceful destruction successful, exit code 0 [2021-10-06 21:29:32,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:29:32,323 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:29:32,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:29:32,324 INFO L82 PathProgramCache]: Analyzing trace with hash -2099575234, now seen corresponding path program 40 times [2021-10-06 21:29:32,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:29:32,324 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2091619899] [2021-10-06 21:29:32,324 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:29:32,325 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:29:32,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:29:32,326 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:29:32,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2021-10-06 21:29:32,735 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:29:32,735 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:29:32,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:29:32,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:29:32,919 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:32,919 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:29:33,423 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:33,424 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:29:33,424 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2091619899] [2021-10-06 21:29:33,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2091619899] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:29:33,424 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:29:33,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-10-06 21:29:33,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994832837] [2021-10-06 21:29:33,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-06 21:29:33,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:29:33,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-06 21:29:33,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2021-10-06 21:29:33,426 INFO L87 Difference]: Start difference. First operand 958 states and 3244 transitions. Second operand has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:37,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:29:37,844 INFO L93 Difference]: Finished difference Result 1312 states and 4001 transitions. [2021-10-06 21:29:37,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-06 21:29:37,845 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-06 21:29:37,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:29:37,850 INFO L225 Difference]: With dead ends: 1312 [2021-10-06 21:29:37,850 INFO L226 Difference]: Without dead ends: 1272 [2021-10-06 21:29:37,850 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 475 ImplicationChecksByTransitivity, 3857.6ms TimeCoverageRelationStatistics Valid=513, Invalid=1379, Unknown=0, NotChecked=0, Total=1892 [2021-10-06 21:29:37,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1272 states. [2021-10-06 21:29:37,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1272 to 938. [2021-10-06 21:29:37,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 938 states, 937 states have (on average 3.355389541088581) internal successors, (3144), 937 states have internal predecessors, (3144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:37,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 938 states to 938 states and 3144 transitions. [2021-10-06 21:29:37,879 INFO L78 Accepts]: Start accepts. Automaton has 938 states and 3144 transitions. Word has length 19 [2021-10-06 21:29:37,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:29:37,879 INFO L470 AbstractCegarLoop]: Abstraction has 938 states and 3144 transitions. [2021-10-06 21:29:37,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:37,880 INFO L276 IsEmpty]: Start isEmpty. Operand 938 states and 3144 transitions. [2021-10-06 21:29:37,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-06 21:29:37,883 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:29:37,883 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:29:37,900 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (53)] Forceful destruction successful, exit code 0 [2021-10-06 21:29:38,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:29:38,098 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:29:38,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:29:38,098 INFO L82 PathProgramCache]: Analyzing trace with hash -1354872736, now seen corresponding path program 41 times [2021-10-06 21:29:38,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:29:38,099 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [350846704] [2021-10-06 21:29:38,099 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:29:38,100 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:29:38,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:29:38,101 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:29:38,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2021-10-06 21:29:38,508 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:29:38,508 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:29:38,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:29:38,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:29:38,649 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:38,650 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:29:39,058 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:39,058 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:29:39,058 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [350846704] [2021-10-06 21:29:39,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [350846704] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:29:39,059 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:29:39,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-10-06 21:29:39,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868781672] [2021-10-06 21:29:39,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:29:39,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:29:39,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:29:39,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:29:39,060 INFO L87 Difference]: Start difference. First operand 938 states and 3144 transitions. Second operand has 16 states, 16 states have (on average 1.75) internal successors, (28), 16 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:42,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:29:42,246 INFO L93 Difference]: Finished difference Result 1194 states and 3705 transitions. [2021-10-06 21:29:42,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-06 21:29:42,247 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.75) internal successors, (28), 16 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-06 21:29:42,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:29:42,251 INFO L225 Difference]: With dead ends: 1194 [2021-10-06 21:29:42,252 INFO L226 Difference]: Without dead ends: 1174 [2021-10-06 21:29:42,252 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 2182.9ms TimeCoverageRelationStatistics Valid=217, Invalid=905, Unknown=0, NotChecked=0, Total=1122 [2021-10-06 21:29:42,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1174 states. [2021-10-06 21:29:42,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1174 to 904. [2021-10-06 21:29:42,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 904 states, 903 states have (on average 3.345514950166113) internal successors, (3021), 903 states have internal predecessors, (3021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:42,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 3021 transitions. [2021-10-06 21:29:42,292 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 3021 transitions. Word has length 19 [2021-10-06 21:29:42,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:29:42,292 INFO L470 AbstractCegarLoop]: Abstraction has 904 states and 3021 transitions. [2021-10-06 21:29:42,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.75) internal successors, (28), 16 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:42,293 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 3021 transitions. [2021-10-06 21:29:42,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-06 21:29:42,295 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:29:42,295 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:29:42,312 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (54)] Forceful destruction successful, exit code 0 [2021-10-06 21:29:42,509 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:29:42,510 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:29:42,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:29:42,511 INFO L82 PathProgramCache]: Analyzing trace with hash 2141539630, now seen corresponding path program 42 times [2021-10-06 21:29:42,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:29:42,511 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [680933882] [2021-10-06 21:29:42,511 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:29:42,512 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:29:42,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:29:42,513 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:29:42,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (55)] Waiting until timeout for monitored process [2021-10-06 21:29:42,941 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-06 21:29:42,941 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:29:42,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:29:42,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:29:43,127 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:43,127 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:29:43,505 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:43,505 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:29:43,506 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [680933882] [2021-10-06 21:29:43,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [680933882] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:29:43,506 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:29:43,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-10-06 21:29:43,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982964766] [2021-10-06 21:29:43,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-06 21:29:43,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:29:43,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-06 21:29:43,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2021-10-06 21:29:43,507 INFO L87 Difference]: Start difference. First operand 904 states and 3021 transitions. Second operand has 19 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 19 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:44,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:29:44,376 INFO L93 Difference]: Finished difference Result 990 states and 3215 transitions. [2021-10-06 21:29:44,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-06 21:29:44,377 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 19 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-06 21:29:44,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:29:44,380 INFO L225 Difference]: With dead ends: 990 [2021-10-06 21:29:44,380 INFO L226 Difference]: Without dead ends: 990 [2021-10-06 21:29:44,380 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 840.9ms TimeCoverageRelationStatistics Valid=213, Invalid=779, Unknown=0, NotChecked=0, Total=992 [2021-10-06 21:29:44,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 990 states. [2021-10-06 21:29:44,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 990 to 910. [2021-10-06 21:29:44,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 910 states, 909 states have (on average 3.3388338833883386) internal successors, (3035), 909 states have internal predecessors, (3035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:44,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 3035 transitions. [2021-10-06 21:29:44,396 INFO L78 Accepts]: Start accepts. Automaton has 910 states and 3035 transitions. Word has length 20 [2021-10-06 21:29:44,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:29:44,397 INFO L470 AbstractCegarLoop]: Abstraction has 910 states and 3035 transitions. [2021-10-06 21:29:44,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 19 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:44,397 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 3035 transitions. [2021-10-06 21:29:44,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-06 21:29:44,399 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:29:44,399 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:29:44,410 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (55)] Forceful destruction successful, exit code 0 [2021-10-06 21:29:44,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:29:44,600 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:29:44,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:29:44,600 INFO L82 PathProgramCache]: Analyzing trace with hash -874721880, now seen corresponding path program 43 times [2021-10-06 21:29:44,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:29:44,601 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1732514938] [2021-10-06 21:29:44,602 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:29:44,602 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:29:44,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:29:44,603 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:29:44,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (56)] Waiting until timeout for monitored process [2021-10-06 21:29:45,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:29:45,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:29:45,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:29:45,318 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:45,319 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:29:46,254 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:46,254 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:29:46,254 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1732514938] [2021-10-06 21:29:46,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1732514938] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:29:46,255 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:29:46,255 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2021-10-06 21:29:46,255 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687363525] [2021-10-06 21:29:46,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-06 21:29:46,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:29:46,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-06 21:29:46,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=359, Unknown=0, NotChecked=0, Total=462 [2021-10-06 21:29:46,256 INFO L87 Difference]: Start difference. First operand 910 states and 3035 transitions. Second operand has 22 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:50,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:29:50,539 INFO L93 Difference]: Finished difference Result 1130 states and 3538 transitions. [2021-10-06 21:29:50,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-06 21:29:50,541 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-06 21:29:50,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:29:50,547 INFO L225 Difference]: With dead ends: 1130 [2021-10-06 21:29:50,547 INFO L226 Difference]: Without dead ends: 1122 [2021-10-06 21:29:50,547 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 4383.3ms TimeCoverageRelationStatistics Valid=387, Invalid=1505, Unknown=0, NotChecked=0, Total=1892 [2021-10-06 21:29:50,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1122 states. [2021-10-06 21:29:50,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1122 to 928. [2021-10-06 21:29:50,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 928 states, 927 states have (on average 3.3333333333333335) internal successors, (3090), 927 states have internal predecessors, (3090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:50,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 928 states to 928 states and 3090 transitions. [2021-10-06 21:29:50,575 INFO L78 Accepts]: Start accepts. Automaton has 928 states and 3090 transitions. Word has length 20 [2021-10-06 21:29:50,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:29:50,575 INFO L470 AbstractCegarLoop]: Abstraction has 928 states and 3090 transitions. [2021-10-06 21:29:50,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:50,576 INFO L276 IsEmpty]: Start isEmpty. Operand 928 states and 3090 transitions. [2021-10-06 21:29:50,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-06 21:29:50,579 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:29:50,579 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:29:50,594 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (56)] Ended with exit code 0 [2021-10-06 21:29:50,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:29:50,792 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:29:50,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:29:50,793 INFO L82 PathProgramCache]: Analyzing trace with hash -1671637000, now seen corresponding path program 44 times [2021-10-06 21:29:50,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:29:50,793 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [68423918] [2021-10-06 21:29:50,794 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:29:50,794 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:29:50,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:29:50,795 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:29:50,830 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (57)] Waiting until timeout for monitored process [2021-10-06 21:29:51,278 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:29:51,279 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:29:51,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:29:51,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:29:51,526 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:51,526 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:29:52,327 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:52,328 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:29:52,328 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [68423918] [2021-10-06 21:29:52,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [68423918] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:29:52,328 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:29:52,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 21 [2021-10-06 21:29:52,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202652724] [2021-10-06 21:29:52,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-06 21:29:52,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:29:52,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-06 21:29:52,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:29:52,329 INFO L87 Difference]: Start difference. First operand 928 states and 3090 transitions. Second operand has 21 states, 21 states have (on average 1.619047619047619) internal successors, (34), 21 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) [2021-10-06 21:29:55,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:29:55,135 INFO L93 Difference]: Finished difference Result 970 states and 3199 transitions. [2021-10-06 21:29:55,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-06 21:29:55,136 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.619047619047619) internal successors, (34), 21 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 20 [2021-10-06 21:29:55,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:29:55,139 INFO L225 Difference]: With dead ends: 970 [2021-10-06 21:29:55,139 INFO L226 Difference]: Without dead ends: 968 [2021-10-06 21:29:55,139 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 2859.3ms TimeCoverageRelationStatistics Valid=255, Invalid=935, Unknown=0, NotChecked=0, Total=1190 [2021-10-06 21:29:55,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2021-10-06 21:29:55,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 940. [2021-10-06 21:29:55,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 940 states, 939 states have (on average 3.3354632587859423) internal successors, (3132), 939 states have internal predecessors, (3132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:55,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 940 states to 940 states and 3132 transitions. [2021-10-06 21:29:55,157 INFO L78 Accepts]: Start accepts. Automaton has 940 states and 3132 transitions. Word has length 20 [2021-10-06 21:29:55,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:29:55,157 INFO L470 AbstractCegarLoop]: Abstraction has 940 states and 3132 transitions. [2021-10-06 21:29:55,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.619047619047619) internal successors, (34), 21 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) [2021-10-06 21:29:55,157 INFO L276 IsEmpty]: Start isEmpty. Operand 940 states and 3132 transitions. [2021-10-06 21:29:55,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-06 21:29:55,160 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:29:55,161 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:29:55,176 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (57)] Forceful destruction successful, exit code 0 [2021-10-06 21:29:55,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:29:55,376 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:29:55,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:29:55,378 INFO L82 PathProgramCache]: Analyzing trace with hash -19415226, now seen corresponding path program 45 times [2021-10-06 21:29:55,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:29:55,378 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [642956625] [2021-10-06 21:29:55,378 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:29:55,378 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:29:55,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:29:55,379 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:29:55,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (58)] Waiting until timeout for monitored process [2021-10-06 21:29:55,927 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-06 21:29:55,928 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:29:55,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-06 21:29:55,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:29:56,198 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:56,199 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:29:56,949 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:56,949 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:29:56,949 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [642956625] [2021-10-06 21:29:56,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [642956625] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:29:56,950 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:29:56,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2021-10-06 21:29:56,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822748616] [2021-10-06 21:29:56,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-06 21:29:56,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:29:56,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-06 21:29:56,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=366, Unknown=0, NotChecked=0, Total=462 [2021-10-06 21:29:56,951 INFO L87 Difference]: Start difference. First operand 940 states and 3132 transitions. Second operand has 22 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:30:04,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:30:04,676 INFO L93 Difference]: Finished difference Result 1238 states and 3789 transitions. [2021-10-06 21:30:04,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-10-06 21:30:04,677 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-06 21:30:04,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:30:04,680 INFO L225 Difference]: With dead ends: 1238 [2021-10-06 21:30:04,680 INFO L226 Difference]: Without dead ends: 1222 [2021-10-06 21:30:04,680 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 474 ImplicationChecksByTransitivity, 7537.9ms TimeCoverageRelationStatistics Valid=513, Invalid=1937, Unknown=0, NotChecked=0, Total=2450 [2021-10-06 21:30:04,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1222 states. [2021-10-06 21:30:04,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1222 to 956. [2021-10-06 21:30:04,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 956 states, 955 states have (on average 3.3403141361256545) internal successors, (3190), 955 states have internal predecessors, (3190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:30:04,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 956 states to 956 states and 3190 transitions. [2021-10-06 21:30:04,704 INFO L78 Accepts]: Start accepts. Automaton has 956 states and 3190 transitions. Word has length 20 [2021-10-06 21:30:04,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:30:04,704 INFO L470 AbstractCegarLoop]: Abstraction has 956 states and 3190 transitions. [2021-10-06 21:30:04,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:30:04,705 INFO L276 IsEmpty]: Start isEmpty. Operand 956 states and 3190 transitions. [2021-10-06 21:30:04,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-06 21:30:04,706 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:30:04,707 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:30:04,719 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (58)] Forceful destruction successful, exit code 0 [2021-10-06 21:30:04,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:30:04,907 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:30:04,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:30:04,909 INFO L82 PathProgramCache]: Analyzing trace with hash 725287272, now seen corresponding path program 46 times [2021-10-06 21:30:04,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:30:04,909 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [54315530] [2021-10-06 21:30:04,910 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:30:04,910 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:30:04,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:30:04,912 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:30:04,918 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (59)] Waiting until timeout for monitored process [2021-10-06 21:30:05,372 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:30:05,372 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:30:05,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:30:05,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:30:05,658 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:30:05,658 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:30:06,520 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:30:06,520 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:30:06,520 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [54315530] [2021-10-06 21:30:06,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [54315530] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:30:06,520 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:30:06,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2021-10-06 21:30:06,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134535212] [2021-10-06 21:30:06,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-06 21:30:06,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:30:06,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-06 21:30:06,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2021-10-06 21:30:06,522 INFO L87 Difference]: Start difference. First operand 956 states and 3190 transitions. Second operand has 22 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:30:16,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:30:16,684 INFO L93 Difference]: Finished difference Result 1314 states and 3931 transitions. [2021-10-06 21:30:16,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-10-06 21:30:16,686 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-06 21:30:16,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:30:16,689 INFO L225 Difference]: With dead ends: 1314 [2021-10-06 21:30:16,689 INFO L226 Difference]: Without dead ends: 1286 [2021-10-06 21:30:16,690 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 474 ImplicationChecksByTransitivity, 9906.1ms TimeCoverageRelationStatistics Valid=595, Invalid=2057, Unknown=0, NotChecked=0, Total=2652 [2021-10-06 21:30:16,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1286 states. [2021-10-06 21:30:16,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1286 to 962. [2021-10-06 21:30:16,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 962 states, 961 states have (on average 3.3329864724245577) internal successors, (3203), 961 states have internal predecessors, (3203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:30:16,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 962 states to 962 states and 3203 transitions. [2021-10-06 21:30:16,721 INFO L78 Accepts]: Start accepts. Automaton has 962 states and 3203 transitions. Word has length 20 [2021-10-06 21:30:16,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:30:16,721 INFO L470 AbstractCegarLoop]: Abstraction has 962 states and 3203 transitions. [2021-10-06 21:30:16,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:30:16,721 INFO L276 IsEmpty]: Start isEmpty. Operand 962 states and 3203 transitions. [2021-10-06 21:30:16,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-06 21:30:16,723 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:30:16,723 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:30:16,734 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (59)] Forceful destruction successful, exit code 0 [2021-10-06 21:30:16,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:30:16,924 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:30:16,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:30:16,925 INFO L82 PathProgramCache]: Analyzing trace with hash -1958739066, now seen corresponding path program 47 times [2021-10-06 21:30:16,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:30:16,925 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [721492908] [2021-10-06 21:30:16,926 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:30:16,926 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:30:16,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:30:16,927 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:30:16,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (60)] Waiting until timeout for monitored process [2021-10-06 21:30:17,382 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:30:17,382 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:30:17,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:30:17,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:30:17,580 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:30:17,580 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:30:18,248 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:30:18,248 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:30:18,249 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [721492908] [2021-10-06 21:30:18,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [721492908] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:30:18,249 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:30:18,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-10-06 21:30:18,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878248815] [2021-10-06 21:30:18,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:30:18,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:30:18,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:30:18,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:30:18,251 INFO L87 Difference]: Start difference. First operand 962 states and 3203 transitions. Second operand has 20 states, 20 states have (on average 1.75) internal successors, (35), 20 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:30:23,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:30:23,585 INFO L93 Difference]: Finished difference Result 1296 states and 3931 transitions. [2021-10-06 21:30:23,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-10-06 21:30:23,586 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.75) internal successors, (35), 20 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-06 21:30:23,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:30:23,588 INFO L225 Difference]: With dead ends: 1296 [2021-10-06 21:30:23,588 INFO L226 Difference]: Without dead ends: 1296 [2021-10-06 21:30:23,589 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 694 ImplicationChecksByTransitivity, 5044.5ms TimeCoverageRelationStatistics Valid=639, Invalid=2667, Unknown=0, NotChecked=0, Total=3306 [2021-10-06 21:30:23,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1296 states. [2021-10-06 21:30:23,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1296 to 954. [2021-10-06 21:30:23,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 954 states, 953 states have (on average 3.329485834207765) internal successors, (3173), 953 states have internal predecessors, (3173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:30:23,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 954 states to 954 states and 3173 transitions. [2021-10-06 21:30:23,608 INFO L78 Accepts]: Start accepts. Automaton has 954 states and 3173 transitions. Word has length 20 [2021-10-06 21:30:23,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:30:23,609 INFO L470 AbstractCegarLoop]: Abstraction has 954 states and 3173 transitions. [2021-10-06 21:30:23,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.75) internal successors, (35), 20 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:30:23,609 INFO L276 IsEmpty]: Start isEmpty. Operand 954 states and 3173 transitions. [2021-10-06 21:30:23,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-06 21:30:23,611 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:30:23,611 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:30:23,624 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (60)] Forceful destruction successful, exit code 0 [2021-10-06 21:30:23,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:30:23,812 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:30:23,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:30:23,812 INFO L82 PathProgramCache]: Analyzing trace with hash -914088428, now seen corresponding path program 48 times [2021-10-06 21:30:23,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:30:23,820 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2131238853] [2021-10-06 21:30:23,820 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:30:23,820 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:30:23,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:30:23,821 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:30:23,822 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (61)] Waiting until timeout for monitored process [2021-10-06 21:30:24,305 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-06 21:30:24,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:30:24,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:30:24,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:30:24,528 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:30:24,529 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:30:25,486 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:30:25,486 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:30:25,486 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2131238853] [2021-10-06 21:30:25,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2131238853] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:30:25,486 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:30:25,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 21 [2021-10-06 21:30:25,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449913775] [2021-10-06 21:30:25,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-06 21:30:25,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:30:25,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-06 21:30:25,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=329, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:30:25,487 INFO L87 Difference]: Start difference. First operand 954 states and 3173 transitions. Second operand has 21 states, 21 states have (on average 1.619047619047619) internal successors, (34), 21 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) [2021-10-06 21:30:33,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:30:33,462 INFO L93 Difference]: Finished difference Result 1188 states and 3728 transitions. [2021-10-06 21:30:33,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-06 21:30:33,463 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.619047619047619) internal successors, (34), 21 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 20 [2021-10-06 21:30:33,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:30:33,466 INFO L225 Difference]: With dead ends: 1188 [2021-10-06 21:30:33,467 INFO L226 Difference]: Without dead ends: 1184 [2021-10-06 21:30:33,467 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 411 ImplicationChecksByTransitivity, 7795.5ms TimeCoverageRelationStatistics Valid=424, Invalid=1646, Unknown=0, NotChecked=0, Total=2070 [2021-10-06 21:30:33,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1184 states. [2021-10-06 21:30:33,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1184 to 996. [2021-10-06 21:30:33,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 996 states, 995 states have (on average 3.3407035175879396) internal successors, (3324), 995 states have internal predecessors, (3324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:30:33,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 996 states to 996 states and 3324 transitions. [2021-10-06 21:30:33,495 INFO L78 Accepts]: Start accepts. Automaton has 996 states and 3324 transitions. Word has length 20 [2021-10-06 21:30:33,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:30:33,495 INFO L470 AbstractCegarLoop]: Abstraction has 996 states and 3324 transitions. [2021-10-06 21:30:33,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.619047619047619) internal successors, (34), 21 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) [2021-10-06 21:30:33,496 INFO L276 IsEmpty]: Start isEmpty. Operand 996 states and 3324 transitions. [2021-10-06 21:30:33,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-06 21:30:33,497 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:30:33,498 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:30:33,509 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (61)] Forceful destruction successful, exit code 0 [2021-10-06 21:30:33,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:30:33,699 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:30:33,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:30:33,699 INFO L82 PathProgramCache]: Analyzing trace with hash 696852530, now seen corresponding path program 49 times [2021-10-06 21:30:33,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:30:33,700 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [166231751] [2021-10-06 21:30:33,700 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:30:33,700 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:30:33,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:30:33,702 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:30:33,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (62)] Waiting until timeout for monitored process [2021-10-06 21:30:34,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:30:34,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:30:34,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:30:34,398 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:30:34,398 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:30:35,002 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:30:35,002 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:30:35,002 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [166231751] [2021-10-06 21:30:35,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [166231751] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:30:35,003 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:30:35,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-10-06 21:30:35,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172259069] [2021-10-06 21:30:35,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:30:35,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:30:35,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:30:35,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:30:35,004 INFO L87 Difference]: Start difference. First operand 996 states and 3324 transitions. Second operand has 20 states, 20 states have (on average 1.65) internal successors, (33), 20 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:30:38,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:30:38,391 INFO L93 Difference]: Finished difference Result 1268 states and 4026 transitions. [2021-10-06 21:30:38,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-06 21:30:38,392 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.65) internal successors, (33), 20 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-06 21:30:38,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:30:38,394 INFO L225 Difference]: With dead ends: 1268 [2021-10-06 21:30:38,394 INFO L226 Difference]: Without dead ends: 1260 [2021-10-06 21:30:38,395 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 419 ImplicationChecksByTransitivity, 3191.4ms TimeCoverageRelationStatistics Valid=504, Invalid=1658, Unknown=0, NotChecked=0, Total=2162 [2021-10-06 21:30:38,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1260 states. [2021-10-06 21:30:38,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1260 to 1028. [2021-10-06 21:30:38,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1028 states, 1027 states have (on average 3.344693281402142) internal successors, (3435), 1027 states have internal predecessors, (3435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:30:38,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1028 states to 1028 states and 3435 transitions. [2021-10-06 21:30:38,416 INFO L78 Accepts]: Start accepts. Automaton has 1028 states and 3435 transitions. Word has length 20 [2021-10-06 21:30:38,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:30:38,417 INFO L470 AbstractCegarLoop]: Abstraction has 1028 states and 3435 transitions. [2021-10-06 21:30:38,417 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.65) internal successors, (33), 20 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:30:38,417 INFO L276 IsEmpty]: Start isEmpty. Operand 1028 states and 3435 transitions. [2021-10-06 21:30:38,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-06 21:30:38,420 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:30:38,420 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:30:38,433 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (62)] Forceful destruction successful, exit code 0 [2021-10-06 21:30:38,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:30:38,621 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:30:38,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:30:38,621 INFO L82 PathProgramCache]: Analyzing trace with hash -962571504, now seen corresponding path program 50 times [2021-10-06 21:30:38,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:30:38,622 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1674612330] [2021-10-06 21:30:38,622 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:30:38,623 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:30:38,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:30:38,624 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:30:38,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (63)] Waiting until timeout for monitored process [2021-10-06 21:30:39,149 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:30:39,150 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:30:39,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:30:39,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:30:39,386 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:30:39,386 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:30:40,004 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:30:40,004 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:30:40,004 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1674612330] [2021-10-06 21:30:40,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1674612330] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:30:40,005 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:30:40,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-10-06 21:30:40,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268187590] [2021-10-06 21:30:40,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:30:40,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:30:40,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:30:40,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:30:40,007 INFO L87 Difference]: Start difference. First operand 1028 states and 3435 transitions. Second operand has 20 states, 20 states have (on average 1.75) internal successors, (35), 20 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:30:43,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:30:43,010 INFO L93 Difference]: Finished difference Result 1302 states and 4116 transitions. [2021-10-06 21:30:43,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-06 21:30:43,011 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.75) internal successors, (35), 20 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-06 21:30:43,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:30:43,014 INFO L225 Difference]: With dead ends: 1302 [2021-10-06 21:30:43,014 INFO L226 Difference]: Without dead ends: 1294 [2021-10-06 21:30:43,014 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 2810.0ms TimeCoverageRelationStatistics Valid=447, Invalid=1533, Unknown=0, NotChecked=0, Total=1980 [2021-10-06 21:30:43,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1294 states. [2021-10-06 21:30:43,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1294 to 1044. [2021-10-06 21:30:43,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1044 states, 1043 states have (on average 3.348993288590604) internal successors, (3493), 1043 states have internal predecessors, (3493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:30:43,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1044 states to 1044 states and 3493 transitions. [2021-10-06 21:30:43,041 INFO L78 Accepts]: Start accepts. Automaton has 1044 states and 3493 transitions. Word has length 20 [2021-10-06 21:30:43,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:30:43,042 INFO L470 AbstractCegarLoop]: Abstraction has 1044 states and 3493 transitions. [2021-10-06 21:30:43,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.75) internal successors, (35), 20 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:30:43,042 INFO L276 IsEmpty]: Start isEmpty. Operand 1044 states and 3493 transitions. [2021-10-06 21:30:43,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-06 21:30:43,045 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:30:43,045 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:30:43,066 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (63)] Forceful destruction successful, exit code 0 [2021-10-06 21:30:43,258 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:30:43,259 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:30:43,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:30:43,259 INFO L82 PathProgramCache]: Analyzing trace with hash -1759486624, now seen corresponding path program 51 times [2021-10-06 21:30:43,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:30:43,260 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1796898852] [2021-10-06 21:30:43,260 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:30:43,261 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:30:43,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:30:43,262 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:30:43,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (64)] Waiting until timeout for monitored process [2021-10-06 21:30:43,809 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-10-06 21:30:43,810 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:30:43,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-06 21:30:43,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:30:44,026 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:30:44,026 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:30:44,847 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:30:44,848 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:30:44,848 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1796898852] [2021-10-06 21:30:44,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1796898852] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:30:44,848 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:30:44,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 21 [2021-10-06 21:30:44,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539610152] [2021-10-06 21:30:44,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-06 21:30:44,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:30:44,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-06 21:30:44,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:30:44,850 INFO L87 Difference]: Start difference. First operand 1044 states and 3493 transitions. Second operand has 21 states, 21 states have (on average 1.619047619047619) internal successors, (34), 21 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) [2021-10-06 21:30:49,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:30:49,076 INFO L93 Difference]: Finished difference Result 1124 states and 3681 transitions. [2021-10-06 21:30:49,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-06 21:30:49,077 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.619047619047619) internal successors, (34), 21 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 20 [2021-10-06 21:30:49,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:30:49,080 INFO L225 Difference]: With dead ends: 1124 [2021-10-06 21:30:49,081 INFO L226 Difference]: Without dead ends: 1122 [2021-10-06 21:30:49,081 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 3890.4ms TimeCoverageRelationStatistics Valid=384, Invalid=1338, Unknown=0, NotChecked=0, Total=1722 [2021-10-06 21:30:49,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1122 states. [2021-10-06 21:30:49,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1122 to 1062. [2021-10-06 21:30:49,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1062 states, 1061 states have (on average 3.3459000942507067) internal successors, (3550), 1061 states have internal predecessors, (3550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:30:49,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1062 states to 1062 states and 3550 transitions. [2021-10-06 21:30:49,108 INFO L78 Accepts]: Start accepts. Automaton has 1062 states and 3550 transitions. Word has length 20 [2021-10-06 21:30:49,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:30:49,108 INFO L470 AbstractCegarLoop]: Abstraction has 1062 states and 3550 transitions. [2021-10-06 21:30:49,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.619047619047619) internal successors, (34), 21 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) [2021-10-06 21:30:49,109 INFO L276 IsEmpty]: Start isEmpty. Operand 1062 states and 3550 transitions. [2021-10-06 21:30:49,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-06 21:30:49,112 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:30:49,112 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:30:49,124 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (64)] Forceful destruction successful, exit code 0 [2021-10-06 21:30:49,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:30:49,322 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:30:49,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:30:49,323 INFO L82 PathProgramCache]: Analyzing trace with hash -48278670, now seen corresponding path program 52 times [2021-10-06 21:30:49,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:30:49,323 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1696492619] [2021-10-06 21:30:49,323 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:30:49,324 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:30:49,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:30:49,325 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:30:49,326 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (65)] Waiting until timeout for monitored process [2021-10-06 21:30:49,842 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:30:49,842 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:30:49,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:30:49,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:30:50,054 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:30:50,054 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:30:50,659 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:30:50,660 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:30:50,660 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1696492619] [2021-10-06 21:30:50,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1696492619] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:30:50,660 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:30:50,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-10-06 21:30:50,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847370447] [2021-10-06 21:30:50,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:30:50,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:30:50,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:30:50,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:30:50,663 INFO L87 Difference]: Start difference. First operand 1062 states and 3550 transitions. Second operand has 20 states, 20 states have (on average 1.65) internal successors, (33), 20 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:30:54,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:30:54,306 INFO L93 Difference]: Finished difference Result 1354 states and 4155 transitions. [2021-10-06 21:30:54,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-06 21:30:54,306 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.65) internal successors, (33), 20 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-06 21:30:54,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:30:54,309 INFO L225 Difference]: With dead ends: 1354 [2021-10-06 21:30:54,309 INFO L226 Difference]: Without dead ends: 1330 [2021-10-06 21:30:54,309 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 3244.2ms TimeCoverageRelationStatistics Valid=538, Invalid=1718, Unknown=0, NotChecked=0, Total=2256 [2021-10-06 21:30:54,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1330 states. [2021-10-06 21:30:54,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1330 to 1050. [2021-10-06 21:30:54,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1050 states, 1049 states have (on average 3.334604385128694) internal successors, (3498), 1049 states have internal predecessors, (3498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:30:54,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1050 states to 1050 states and 3498 transitions. [2021-10-06 21:30:54,336 INFO L78 Accepts]: Start accepts. Automaton has 1050 states and 3498 transitions. Word has length 20 [2021-10-06 21:30:54,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:30:54,336 INFO L470 AbstractCegarLoop]: Abstraction has 1050 states and 3498 transitions. [2021-10-06 21:30:54,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.65) internal successors, (33), 20 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:30:54,336 INFO L276 IsEmpty]: Start isEmpty. Operand 1050 states and 3498 transitions. [2021-10-06 21:30:54,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-06 21:30:54,339 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:30:54,339 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:30:54,355 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (65)] Forceful destruction successful, exit code 0 [2021-10-06 21:30:54,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:30:54,554 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:30:54,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:30:54,554 INFO L82 PathProgramCache]: Analyzing trace with hash -2046588690, now seen corresponding path program 53 times [2021-10-06 21:30:54,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:30:54,555 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [813397241] [2021-10-06 21:30:54,555 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:30:54,556 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:30:54,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:30:54,557 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:30:54,558 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (66)] Waiting until timeout for monitored process [2021-10-06 21:30:55,085 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:30:55,085 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:30:55,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:30:55,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:30:55,315 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:30:55,315 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:30:56,088 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:30:56,088 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:30:56,088 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [813397241] [2021-10-06 21:30:56,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [813397241] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:30:56,088 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:30:56,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-10-06 21:30:56,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774486490] [2021-10-06 21:30:56,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:30:56,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:30:56,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:30:56,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:30:56,090 INFO L87 Difference]: Start difference. First operand 1050 states and 3498 transitions. Second operand has 20 states, 20 states have (on average 1.75) internal successors, (35), 20 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:31:01,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:31:01,742 INFO L93 Difference]: Finished difference Result 1310 states and 4045 transitions. [2021-10-06 21:31:01,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-06 21:31:01,743 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.75) internal successors, (35), 20 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-06 21:31:01,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:31:01,746 INFO L225 Difference]: With dead ends: 1310 [2021-10-06 21:31:01,746 INFO L226 Difference]: Without dead ends: 1310 [2021-10-06 21:31:01,746 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 673 ImplicationChecksByTransitivity, 5356.9ms TimeCoverageRelationStatistics Valid=635, Invalid=2671, Unknown=0, NotChecked=0, Total=3306 [2021-10-06 21:31:01,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1310 states. [2021-10-06 21:31:01,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1310 to 1048. [2021-10-06 21:31:01,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1048 states, 1047 states have (on average 3.3142311365807067) internal successors, (3470), 1047 states have internal predecessors, (3470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:31:01,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1048 states to 1048 states and 3470 transitions. [2021-10-06 21:31:01,767 INFO L78 Accepts]: Start accepts. Automaton has 1048 states and 3470 transitions. Word has length 20 [2021-10-06 21:31:01,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:31:01,767 INFO L470 AbstractCegarLoop]: Abstraction has 1048 states and 3470 transitions. [2021-10-06 21:31:01,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.75) internal successors, (35), 20 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:31:01,767 INFO L276 IsEmpty]: Start isEmpty. Operand 1048 states and 3470 transitions. [2021-10-06 21:31:01,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-06 21:31:01,770 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:31:01,770 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:31:01,781 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (66)] Forceful destruction successful, exit code 0 [2021-10-06 21:31:01,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:31:01,972 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:31:01,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:31:01,973 INFO L82 PathProgramCache]: Analyzing trace with hash -2124394854, now seen corresponding path program 54 times [2021-10-06 21:31:01,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:31:01,974 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [183790030] [2021-10-06 21:31:01,974 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:31:01,974 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:31:01,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:31:01,975 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:31:01,976 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (67)] Waiting until timeout for monitored process [2021-10-06 21:31:02,523 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-06 21:31:02,523 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:31:02,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:31:02,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:31:02,768 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:31:02,768 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:31:03,861 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:31:03,861 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:31:03,861 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [183790030] [2021-10-06 21:31:03,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [183790030] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:31:03,861 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:31:03,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 21 [2021-10-06 21:31:03,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307210569] [2021-10-06 21:31:03,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-06 21:31:03,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:31:03,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-06 21:31:03,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:31:03,863 INFO L87 Difference]: Start difference. First operand 1048 states and 3470 transitions. Second operand has 21 states, 21 states have (on average 1.619047619047619) internal successors, (34), 21 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) [2021-10-06 21:31:12,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:31:12,528 INFO L93 Difference]: Finished difference Result 1252 states and 3925 transitions. [2021-10-06 21:31:12,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-06 21:31:12,529 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.619047619047619) internal successors, (34), 21 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 20 [2021-10-06 21:31:12,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:31:12,532 INFO L225 Difference]: With dead ends: 1252 [2021-10-06 21:31:12,532 INFO L226 Difference]: Without dead ends: 1250 [2021-10-06 21:31:12,532 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 362 ImplicationChecksByTransitivity, 8213.9ms TimeCoverageRelationStatistics Valid=495, Invalid=1667, Unknown=0, NotChecked=0, Total=2162 [2021-10-06 21:31:12,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1250 states. [2021-10-06 21:31:12,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1250 to 1074. [2021-10-06 21:31:12,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1074 states, 1073 states have (on average 3.316868592730662) internal successors, (3559), 1073 states have internal predecessors, (3559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:31:12,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1074 states to 1074 states and 3559 transitions. [2021-10-06 21:31:12,554 INFO L78 Accepts]: Start accepts. Automaton has 1074 states and 3559 transitions. Word has length 20 [2021-10-06 21:31:12,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:31:12,555 INFO L470 AbstractCegarLoop]: Abstraction has 1074 states and 3559 transitions. [2021-10-06 21:31:12,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.619047619047619) internal successors, (34), 21 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) [2021-10-06 21:31:12,555 INFO L276 IsEmpty]: Start isEmpty. Operand 1074 states and 3559 transitions. [2021-10-06 21:31:12,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-06 21:31:12,557 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:31:12,557 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:31:12,570 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (67)] Forceful destruction successful, exit code 0 [2021-10-06 21:31:12,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:31:12,758 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:31:12,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:31:12,759 INFO L82 PathProgramCache]: Analyzing trace with hash -413186900, now seen corresponding path program 55 times [2021-10-06 21:31:12,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:31:12,760 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2136496697] [2021-10-06 21:31:12,760 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:31:12,760 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:31:12,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:31:12,761 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:31:12,762 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (68)] Waiting until timeout for monitored process [2021-10-06 21:31:13,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:31:13,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:31:13,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:31:13,524 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:31:13,524 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:31:14,188 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:31:14,188 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:31:14,188 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2136496697] [2021-10-06 21:31:14,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2136496697] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:31:14,189 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:31:14,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-10-06 21:31:14,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058908766] [2021-10-06 21:31:14,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:31:14,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:31:14,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:31:14,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:31:14,191 INFO L87 Difference]: Start difference. First operand 1074 states and 3559 transitions. Second operand has 20 states, 20 states have (on average 1.65) internal successors, (33), 20 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:31:18,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:31:18,382 INFO L93 Difference]: Finished difference Result 1512 states and 4592 transitions. [2021-10-06 21:31:18,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-06 21:31:18,383 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.65) internal successors, (33), 20 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-06 21:31:18,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:31:18,386 INFO L225 Difference]: With dead ends: 1512 [2021-10-06 21:31:18,386 INFO L226 Difference]: Without dead ends: 1492 [2021-10-06 21:31:18,386 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 509 ImplicationChecksByTransitivity, 3863.8ms TimeCoverageRelationStatistics Valid=581, Invalid=1869, Unknown=0, NotChecked=0, Total=2450 [2021-10-06 21:31:18,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1492 states. [2021-10-06 21:31:18,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1492 to 1090. [2021-10-06 21:31:18,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1090 states, 1089 states have (on average 3.3067033976124884) internal successors, (3601), 1089 states have internal predecessors, (3601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:31:18,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1090 states to 1090 states and 3601 transitions. [2021-10-06 21:31:18,410 INFO L78 Accepts]: Start accepts. Automaton has 1090 states and 3601 transitions. Word has length 20 [2021-10-06 21:31:18,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:31:18,410 INFO L470 AbstractCegarLoop]: Abstraction has 1090 states and 3601 transitions. [2021-10-06 21:31:18,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.65) internal successors, (33), 20 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:31:18,410 INFO L276 IsEmpty]: Start isEmpty. Operand 1090 states and 3601 transitions. [2021-10-06 21:31:18,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-06 21:31:18,412 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:31:18,412 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:31:18,423 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (68)] Ended with exit code 0 [2021-10-06 21:31:18,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:31:18,613 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:31:18,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:31:18,614 INFO L82 PathProgramCache]: Analyzing trace with hash 283461224, now seen corresponding path program 56 times [2021-10-06 21:31:18,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:31:18,615 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [242684388] [2021-10-06 21:31:18,615 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:31:18,615 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:31:18,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:31:18,616 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:31:18,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (69)] Waiting until timeout for monitored process [2021-10-06 21:31:19,182 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:31:19,182 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:31:19,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:31:19,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:31:19,421 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:31:19,421 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:31:20,169 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:31:20,169 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:31:20,169 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [242684388] [2021-10-06 21:31:20,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [242684388] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:31:20,170 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:31:20,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-10-06 21:31:20,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221352347] [2021-10-06 21:31:20,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:31:20,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:31:20,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:31:20,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:31:20,171 INFO L87 Difference]: Start difference. First operand 1090 states and 3601 transitions. Second operand has 20 states, 20 states have (on average 1.75) internal successors, (35), 20 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:31:25,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:31:25,044 INFO L93 Difference]: Finished difference Result 1570 states and 4849 transitions. [2021-10-06 21:31:25,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-10-06 21:31:25,045 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.75) internal successors, (35), 20 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-06 21:31:25,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:31:25,050 INFO L225 Difference]: With dead ends: 1570 [2021-10-06 21:31:25,050 INFO L226 Difference]: Without dead ends: 1562 [2021-10-06 21:31:25,050 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 531 ImplicationChecksByTransitivity, 4345.8ms TimeCoverageRelationStatistics Valid=637, Invalid=1913, Unknown=0, NotChecked=0, Total=2550 [2021-10-06 21:31:25,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1562 states. [2021-10-06 21:31:25,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1562 to 1156. [2021-10-06 21:31:25,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1156 states, 1155 states have (on average 3.324675324675325) internal successors, (3840), 1155 states have internal predecessors, (3840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:31:25,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1156 states to 1156 states and 3840 transitions. [2021-10-06 21:31:25,074 INFO L78 Accepts]: Start accepts. Automaton has 1156 states and 3840 transitions. Word has length 20 [2021-10-06 21:31:25,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:31:25,074 INFO L470 AbstractCegarLoop]: Abstraction has 1156 states and 3840 transitions. [2021-10-06 21:31:25,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.75) internal successors, (35), 20 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:31:25,074 INFO L276 IsEmpty]: Start isEmpty. Operand 1156 states and 3840 transitions. [2021-10-06 21:31:25,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-06 21:31:25,077 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:31:25,077 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:31:25,091 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (69)] Forceful destruction successful, exit code 0 [2021-10-06 21:31:25,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:31:25,278 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:31:25,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:31:25,279 INFO L82 PathProgramCache]: Analyzing trace with hash -513453896, now seen corresponding path program 57 times [2021-10-06 21:31:25,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:31:25,279 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1263102079] [2021-10-06 21:31:25,279 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:31:25,280 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:31:25,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:31:25,281 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:31:25,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (70)] Waiting until timeout for monitored process [2021-10-06 21:31:25,902 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-06 21:31:25,902 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:31:25,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-06 21:31:25,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:31:26,151 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:31:26,151 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:31:26,995 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:31:26,995 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:31:26,996 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1263102079] [2021-10-06 21:31:26,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1263102079] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:31:26,996 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:31:26,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 21 [2021-10-06 21:31:26,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353494737] [2021-10-06 21:31:26,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-06 21:31:26,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:31:26,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-06 21:31:26,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:31:26,997 INFO L87 Difference]: Start difference. First operand 1156 states and 3840 transitions. Second operand has 21 states, 21 states have (on average 1.619047619047619) internal successors, (34), 21 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) [2021-10-06 21:31:31,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:31:31,730 INFO L93 Difference]: Finished difference Result 1318 states and 4228 transitions. [2021-10-06 21:31:31,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-06 21:31:31,732 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.619047619047619) internal successors, (34), 21 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 20 [2021-10-06 21:31:31,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:31:31,734 INFO L225 Difference]: With dead ends: 1318 [2021-10-06 21:31:31,734 INFO L226 Difference]: Without dead ends: 1316 [2021-10-06 21:31:31,734 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 4256.1ms TimeCoverageRelationStatistics Valid=421, Invalid=1385, Unknown=0, NotChecked=0, Total=1806 [2021-10-06 21:31:31,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1316 states. [2021-10-06 21:31:31,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1316 to 1174. [2021-10-06 21:31:31,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1174 states, 1173 states have (on average 3.3290707587382777) internal successors, (3905), 1173 states have internal predecessors, (3905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:31:31,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1174 states to 1174 states and 3905 transitions. [2021-10-06 21:31:31,754 INFO L78 Accepts]: Start accepts. Automaton has 1174 states and 3905 transitions. Word has length 20 [2021-10-06 21:31:31,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:31:31,755 INFO L470 AbstractCegarLoop]: Abstraction has 1174 states and 3905 transitions. [2021-10-06 21:31:31,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.619047619047619) internal successors, (34), 21 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) [2021-10-06 21:31:31,755 INFO L276 IsEmpty]: Start isEmpty. Operand 1174 states and 3905 transitions. [2021-10-06 21:31:31,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-06 21:31:31,757 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:31:31,757 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:31:31,769 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (70)] Ended with exit code 0 [2021-10-06 21:31:31,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:31:31,958 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:31:31,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:31:31,959 INFO L82 PathProgramCache]: Analyzing trace with hash 1197754058, now seen corresponding path program 58 times [2021-10-06 21:31:31,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:31:31,960 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2045329067] [2021-10-06 21:31:31,960 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:31:31,960 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:31:31,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:31:31,961 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:31:31,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (71)] Waiting until timeout for monitored process [2021-10-06 21:31:32,552 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:31:32,552 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:31:32,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:31:32,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:31:32,776 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:31:32,776 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:31:33,493 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:31:33,494 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:31:33,494 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2045329067] [2021-10-06 21:31:33,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2045329067] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:31:33,494 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:31:33,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-10-06 21:31:33,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93239579] [2021-10-06 21:31:33,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:31:33,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:31:33,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:31:33,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:31:33,495 INFO L87 Difference]: Start difference. First operand 1174 states and 3905 transitions. Second operand has 20 states, 20 states have (on average 1.65) internal successors, (33), 20 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:31:38,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:31:38,429 INFO L93 Difference]: Finished difference Result 1590 states and 4861 transitions. [2021-10-06 21:31:38,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-10-06 21:31:38,431 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.65) internal successors, (33), 20 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-06 21:31:38,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:31:38,434 INFO L225 Difference]: With dead ends: 1590 [2021-10-06 21:31:38,434 INFO L226 Difference]: Without dead ends: 1574 [2021-10-06 21:31:38,435 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 540 ImplicationChecksByTransitivity, 4389.2ms TimeCoverageRelationStatistics Valid=624, Invalid=2028, Unknown=0, NotChecked=0, Total=2652 [2021-10-06 21:31:38,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1574 states. [2021-10-06 21:31:38,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1574 to 1150. [2021-10-06 21:31:38,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1150 states, 1149 states have (on average 3.31331592689295) internal successors, (3807), 1149 states have internal predecessors, (3807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:31:38,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1150 states to 1150 states and 3807 transitions. [2021-10-06 21:31:38,462 INFO L78 Accepts]: Start accepts. Automaton has 1150 states and 3807 transitions. Word has length 20 [2021-10-06 21:31:38,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:31:38,462 INFO L470 AbstractCegarLoop]: Abstraction has 1150 states and 3807 transitions. [2021-10-06 21:31:38,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.65) internal successors, (33), 20 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:31:38,462 INFO L276 IsEmpty]: Start isEmpty. Operand 1150 states and 3807 transitions. [2021-10-06 21:31:38,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-06 21:31:38,465 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:31:38,465 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:31:38,476 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (71)] Forceful destruction successful, exit code 0 [2021-10-06 21:31:38,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:31:38,666 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:31:38,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:31:38,666 INFO L82 PathProgramCache]: Analyzing trace with hash 1883470376, now seen corresponding path program 59 times [2021-10-06 21:31:38,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:31:38,667 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1889824350] [2021-10-06 21:31:38,667 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:31:38,667 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:31:38,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:31:38,669 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:31:38,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (72)] Waiting until timeout for monitored process [2021-10-06 21:31:39,281 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-06 21:31:39,282 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:31:39,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:31:39,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:31:39,494 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:31:39,494 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:31:40,355 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:31:40,356 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:31:40,356 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1889824350] [2021-10-06 21:31:40,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1889824350] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:31:40,356 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:31:40,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-10-06 21:31:40,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878045669] [2021-10-06 21:31:40,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:31:40,357 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:31:40,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:31:40,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:31:40,358 INFO L87 Difference]: Start difference. First operand 1150 states and 3807 transitions. Second operand has 20 states, 20 states have (on average 1.75) internal successors, (35), 20 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:31:49,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:31:49,565 INFO L93 Difference]: Finished difference Result 1656 states and 4911 transitions. [2021-10-06 21:31:49,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-10-06 21:31:49,566 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.75) internal successors, (35), 20 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-06 21:31:49,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:31:49,570 INFO L225 Difference]: With dead ends: 1656 [2021-10-06 21:31:49,570 INFO L226 Difference]: Without dead ends: 1604 [2021-10-06 21:31:49,571 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1494 ImplicationChecksByTransitivity, 7903.7ms TimeCoverageRelationStatistics Valid=1075, Invalid=4475, Unknown=0, NotChecked=0, Total=5550 [2021-10-06 21:31:49,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2021-10-06 21:31:49,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1122. [2021-10-06 21:31:49,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1122 states, 1121 states have (on average 3.2908117752007136) internal successors, (3689), 1121 states have internal predecessors, (3689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:31:49,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1122 states to 1122 states and 3689 transitions. [2021-10-06 21:31:49,593 INFO L78 Accepts]: Start accepts. Automaton has 1122 states and 3689 transitions. Word has length 20 [2021-10-06 21:31:49,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:31:49,593 INFO L470 AbstractCegarLoop]: Abstraction has 1122 states and 3689 transitions. [2021-10-06 21:31:49,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.75) internal successors, (35), 20 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:31:49,593 INFO L276 IsEmpty]: Start isEmpty. Operand 1122 states and 3689 transitions. [2021-10-06 21:31:49,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-06 21:31:49,595 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:31:49,595 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:31:49,607 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (72)] Ended with exit code 0 [2021-10-06 21:31:49,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:31:49,796 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:31:49,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:31:49,797 INFO L82 PathProgramCache]: Analyzing trace with hash 657540524, now seen corresponding path program 60 times [2021-10-06 21:31:49,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:31:49,797 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1826641482] [2021-10-06 21:31:49,798 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:31:49,798 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:31:49,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:31:49,799 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:31:49,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (73)] Waiting until timeout for monitored process [2021-10-06 21:31:50,422 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-06 21:31:50,422 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:31:50,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-06 21:31:50,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:31:50,661 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:31:50,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:31:51,548 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:31:51,548 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:31:51,548 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1826641482] [2021-10-06 21:31:51,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1826641482] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:31:51,548 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:31:51,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 21 [2021-10-06 21:31:51,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712105467] [2021-10-06 21:31:51,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-06 21:31:51,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:31:51,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-06 21:31:51,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=328, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:31:51,549 INFO L87 Difference]: Start difference. First operand 1122 states and 3689 transitions. Second operand has 21 states, 21 states have (on average 1.619047619047619) internal successors, (34), 21 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) [2021-10-06 21:32:05,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:32:05,191 INFO L93 Difference]: Finished difference Result 1474 states and 4503 transitions. [2021-10-06 21:32:05,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-10-06 21:32:05,191 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.619047619047619) internal successors, (34), 21 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 20 [2021-10-06 21:32:05,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:32:05,195 INFO L225 Difference]: With dead ends: 1474 [2021-10-06 21:32:05,195 INFO L226 Difference]: Without dead ends: 1468 [2021-10-06 21:32:05,195 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1015 ImplicationChecksByTransitivity, 13088.4ms TimeCoverageRelationStatistics Valid=816, Invalid=3474, Unknown=0, NotChecked=0, Total=4290 [2021-10-06 21:32:05,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1468 states. [2021-10-06 21:32:05,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1468 to 1166. [2021-10-06 21:32:05,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1166 states, 1165 states have (on average 3.2952789699570815) internal successors, (3839), 1165 states have internal predecessors, (3839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:32:05,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1166 states to 1166 states and 3839 transitions. [2021-10-06 21:32:05,225 INFO L78 Accepts]: Start accepts. Automaton has 1166 states and 3839 transitions. Word has length 20 [2021-10-06 21:32:05,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:32:05,226 INFO L470 AbstractCegarLoop]: Abstraction has 1166 states and 3839 transitions. [2021-10-06 21:32:05,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.619047619047619) internal successors, (34), 21 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) [2021-10-06 21:32:05,226 INFO L276 IsEmpty]: Start isEmpty. Operand 1166 states and 3839 transitions. [2021-10-06 21:32:05,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-06 21:32:05,228 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:32:05,228 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:32:05,241 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (73)] Forceful destruction successful, exit code 0 [2021-10-06 21:32:05,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:32:05,433 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:32:05,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:32:05,434 INFO L82 PathProgramCache]: Analyzing trace with hash 1453860998, now seen corresponding path program 61 times [2021-10-06 21:32:05,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:32:05,434 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2085714087] [2021-10-06 21:32:05,434 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:32:05,435 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:32:05,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:32:05,436 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:32:05,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (74)] Waiting until timeout for monitored process [2021-10-06 21:32:06,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:32:06,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:32:06,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:32:06,366 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:32:06,367 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:32:07,510 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:32:07,510 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:32:07,510 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2085714087] [2021-10-06 21:32:07,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2085714087] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:32:07,510 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:32:07,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2021-10-06 21:32:07,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47074739] [2021-10-06 21:32:07,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-06 21:32:07,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:32:07,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-06 21:32:07,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2021-10-06 21:32:07,511 INFO L87 Difference]: Start difference. First operand 1166 states and 3839 transitions. Second operand has 22 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:32:17,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:32:17,302 INFO L93 Difference]: Finished difference Result 1506 states and 4622 transitions. [2021-10-06 21:32:17,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-06 21:32:17,304 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-06 21:32:17,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:32:17,307 INFO L225 Difference]: With dead ends: 1506 [2021-10-06 21:32:17,307 INFO L226 Difference]: Without dead ends: 1490 [2021-10-06 21:32:17,307 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 393 ImplicationChecksByTransitivity, 8690.7ms TimeCoverageRelationStatistics Valid=548, Invalid=1902, Unknown=0, NotChecked=0, Total=2450 [2021-10-06 21:32:17,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1490 states. [2021-10-06 21:32:17,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1490 to 1204. [2021-10-06 21:32:17,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1204 states, 1203 states have (on average 3.313383208645054) internal successors, (3986), 1203 states have internal predecessors, (3986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:32:17,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1204 states to 1204 states and 3986 transitions. [2021-10-06 21:32:17,332 INFO L78 Accepts]: Start accepts. Automaton has 1204 states and 3986 transitions. Word has length 20 [2021-10-06 21:32:17,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:32:17,332 INFO L470 AbstractCegarLoop]: Abstraction has 1204 states and 3986 transitions. [2021-10-06 21:32:17,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:32:17,332 INFO L276 IsEmpty]: Start isEmpty. Operand 1204 states and 3986 transitions. [2021-10-06 21:32:17,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-06 21:32:17,335 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:32:17,335 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:32:17,348 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (74)] Forceful destruction successful, exit code 0 [2021-10-06 21:32:17,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 74 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:32:17,536 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:32:17,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:32:17,537 INFO L82 PathProgramCache]: Analyzing trace with hash -2026485814, now seen corresponding path program 62 times [2021-10-06 21:32:17,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:32:17,537 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1111075587] [2021-10-06 21:32:17,537 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:32:17,538 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:32:17,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:32:17,539 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:32:17,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (75)] Waiting until timeout for monitored process [2021-10-06 21:32:18,189 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:32:18,189 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:32:18,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:32:18,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:32:18,412 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:32:18,412 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:32:19,475 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:32:19,475 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:32:19,475 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1111075587] [2021-10-06 21:32:19,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1111075587] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:32:19,476 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:32:19,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 21 [2021-10-06 21:32:19,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611232049] [2021-10-06 21:32:19,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-06 21:32:19,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:32:19,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-06 21:32:19,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=328, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:32:19,477 INFO L87 Difference]: Start difference. First operand 1204 states and 3986 transitions. Second operand has 21 states, 21 states have (on average 1.619047619047619) internal successors, (34), 21 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) [2021-10-06 21:32:26,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:32:26,773 INFO L93 Difference]: Finished difference Result 1456 states and 4581 transitions. [2021-10-06 21:32:26,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-06 21:32:26,775 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.619047619047619) internal successors, (34), 21 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 20 [2021-10-06 21:32:26,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:32:26,777 INFO L225 Difference]: With dead ends: 1456 [2021-10-06 21:32:26,777 INFO L226 Difference]: Without dead ends: 1452 [2021-10-06 21:32:26,778 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316 ImplicationChecksByTransitivity, 6862.2ms TimeCoverageRelationStatistics Valid=450, Invalid=1620, Unknown=0, NotChecked=0, Total=2070 [2021-10-06 21:32:26,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1452 states. [2021-10-06 21:32:26,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1452 to 1236. [2021-10-06 21:32:26,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1236 states, 1235 states have (on average 3.3198380566801617) internal successors, (4100), 1235 states have internal predecessors, (4100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:32:26,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1236 states to 1236 states and 4100 transitions. [2021-10-06 21:32:26,799 INFO L78 Accepts]: Start accepts. Automaton has 1236 states and 4100 transitions. Word has length 20 [2021-10-06 21:32:26,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:32:26,800 INFO L470 AbstractCegarLoop]: Abstraction has 1236 states and 4100 transitions. [2021-10-06 21:32:26,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.619047619047619) internal successors, (34), 21 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) [2021-10-06 21:32:26,800 INFO L276 IsEmpty]: Start isEmpty. Operand 1236 states and 4100 transitions. [2021-10-06 21:32:26,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-06 21:32:26,803 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:32:26,803 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:32:26,815 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (75)] Ended with exit code 0 [2021-10-06 21:32:27,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:32:27,004 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:32:27,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:32:27,004 INFO L82 PathProgramCache]: Analyzing trace with hash -1230165340, now seen corresponding path program 63 times [2021-10-06 21:32:27,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:32:27,005 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [184796983] [2021-10-06 21:32:27,005 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:32:27,005 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:32:27,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:32:27,008 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:32:27,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (76)] Waiting until timeout for monitored process [2021-10-06 21:32:27,722 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-06 21:32:27,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:32:27,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:32:27,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:32:27,992 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:32:27,992 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:32:29,024 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:32:29,024 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:32:29,024 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [184796983] [2021-10-06 21:32:29,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [184796983] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:32:29,025 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:32:29,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2021-10-06 21:32:29,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872375883] [2021-10-06 21:32:29,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-06 21:32:29,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:32:29,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-06 21:32:29,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=354, Unknown=0, NotChecked=0, Total=462 [2021-10-06 21:32:29,026 INFO L87 Difference]: Start difference. First operand 1236 states and 4100 transitions. Second operand has 22 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:32:40,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:32:40,917 INFO L93 Difference]: Finished difference Result 1676 states and 5039 transitions. [2021-10-06 21:32:40,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-10-06 21:32:40,919 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-06 21:32:40,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:32:40,921 INFO L225 Difference]: With dead ends: 1676 [2021-10-06 21:32:40,922 INFO L226 Difference]: Without dead ends: 1664 [2021-10-06 21:32:40,922 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1044 ImplicationChecksByTransitivity, 11115.9ms TimeCoverageRelationStatistics Valid=930, Invalid=3626, Unknown=0, NotChecked=0, Total=4556 [2021-10-06 21:32:40,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1664 states. [2021-10-06 21:32:40,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1664 to 1258. [2021-10-06 21:32:40,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1258 states, 1257 states have (on average 3.3293556085918854) internal successors, (4185), 1257 states have internal predecessors, (4185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:32:40,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1258 states to 1258 states and 4185 transitions. [2021-10-06 21:32:40,945 INFO L78 Accepts]: Start accepts. Automaton has 1258 states and 4185 transitions. Word has length 20 [2021-10-06 21:32:40,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:32:40,946 INFO L470 AbstractCegarLoop]: Abstraction has 1258 states and 4185 transitions. [2021-10-06 21:32:40,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:32:40,946 INFO L276 IsEmpty]: Start isEmpty. Operand 1258 states and 4185 transitions. [2021-10-06 21:32:40,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-06 21:32:40,948 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:32:40,948 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:32:40,961 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (76)] Forceful destruction successful, exit code 0 [2021-10-06 21:32:41,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:32:41,149 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:32:41,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:32:41,150 INFO L82 PathProgramCache]: Analyzing trace with hash 609057448, now seen corresponding path program 64 times [2021-10-06 21:32:41,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:32:41,150 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [445248579] [2021-10-06 21:32:41,151 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:32:41,151 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:32:41,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:32:41,152 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:32:41,153 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (77)] Waiting until timeout for monitored process [2021-10-06 21:32:41,794 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:32:41,794 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:32:41,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:32:41,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:32:42,073 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:32:42,073 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:32:43,148 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:32:43,148 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:32:43,149 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [445248579] [2021-10-06 21:32:43,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [445248579] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:32:43,149 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:32:43,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2021-10-06 21:32:43,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92328998] [2021-10-06 21:32:43,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-06 21:32:43,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:32:43,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-06 21:32:43,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=359, Unknown=0, NotChecked=0, Total=462 [2021-10-06 21:32:43,150 INFO L87 Difference]: Start difference. First operand 1258 states and 4185 transitions. Second operand has 22 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:32:49,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:32:49,825 INFO L93 Difference]: Finished difference Result 1512 states and 4785 transitions. [2021-10-06 21:32:49,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-06 21:32:49,826 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-06 21:32:49,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:32:49,829 INFO L225 Difference]: With dead ends: 1512 [2021-10-06 21:32:49,830 INFO L226 Difference]: Without dead ends: 1504 [2021-10-06 21:32:49,830 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 5845.4ms TimeCoverageRelationStatistics Valid=524, Invalid=1732, Unknown=0, NotChecked=0, Total=2256 [2021-10-06 21:32:49,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1504 states. [2021-10-06 21:32:49,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1504 to 1286. [2021-10-06 21:32:49,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1286 states, 1285 states have (on average 3.3346303501945527) internal successors, (4285), 1285 states have internal predecessors, (4285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:32:49,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1286 states to 1286 states and 4285 transitions. [2021-10-06 21:32:49,877 INFO L78 Accepts]: Start accepts. Automaton has 1286 states and 4285 transitions. Word has length 20 [2021-10-06 21:32:49,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:32:49,878 INFO L470 AbstractCegarLoop]: Abstraction has 1286 states and 4285 transitions. [2021-10-06 21:32:49,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:32:49,878 INFO L276 IsEmpty]: Start isEmpty. Operand 1286 states and 4285 transitions. [2021-10-06 21:32:49,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-06 21:32:49,881 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:32:49,881 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:32:49,893 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (77)] Ended with exit code 0 [2021-10-06 21:32:50,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:32:50,082 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:32:50,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:32:50,083 INFO L82 PathProgramCache]: Analyzing trace with hash -187857672, now seen corresponding path program 65 times [2021-10-06 21:32:50,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:32:50,084 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [998743424] [2021-10-06 21:32:50,084 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:32:50,084 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:32:50,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:32:50,086 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:32:50,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (78)] Waiting until timeout for monitored process [2021-10-06 21:32:50,768 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-10-06 21:32:50,768 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:32:50,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:32:50,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:32:50,987 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:32:50,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:32:51,592 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:32:51,593 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:32:51,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [998743424] [2021-10-06 21:32:51,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [998743424] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:32:51,593 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:32:51,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-10-06 21:32:51,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977383930] [2021-10-06 21:32:51,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:32:51,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:32:51,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:32:51,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:32:51,594 INFO L87 Difference]: Start difference. First operand 1286 states and 4285 transitions. Second operand has 20 states, 20 states have (on average 1.65) internal successors, (33), 20 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:32:56,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:32:56,415 INFO L93 Difference]: Finished difference Result 1494 states and 4934 transitions. [2021-10-06 21:32:56,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-10-06 21:32:56,415 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.65) internal successors, (33), 20 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-06 21:32:56,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:32:56,419 INFO L225 Difference]: With dead ends: 1494 [2021-10-06 21:32:56,420 INFO L226 Difference]: Without dead ends: 1488 [2021-10-06 21:32:56,420 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 440 ImplicationChecksByTransitivity, 4205.3ms TimeCoverageRelationStatistics Valid=570, Invalid=1782, Unknown=0, NotChecked=0, Total=2352 [2021-10-06 21:32:56,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1488 states. [2021-10-06 21:32:56,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1488 to 1348. [2021-10-06 21:32:56,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1348 states, 1347 states have (on average 3.365998515219005) internal successors, (4534), 1347 states have internal predecessors, (4534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:32:56,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1348 states to 1348 states and 4534 transitions. [2021-10-06 21:32:56,442 INFO L78 Accepts]: Start accepts. Automaton has 1348 states and 4534 transitions. Word has length 20 [2021-10-06 21:32:56,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:32:56,443 INFO L470 AbstractCegarLoop]: Abstraction has 1348 states and 4534 transitions. [2021-10-06 21:32:56,443 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.65) internal successors, (33), 20 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:32:56,443 INFO L276 IsEmpty]: Start isEmpty. Operand 1348 states and 4534 transitions. [2021-10-06 21:32:56,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-06 21:32:56,445 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:32:56,445 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:32:56,459 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (78)] Forceful destruction successful, exit code 0 [2021-10-06 21:32:56,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:32:56,646 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:32:56,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:32:56,647 INFO L82 PathProgramCache]: Analyzing trace with hash 1523350282, now seen corresponding path program 66 times [2021-10-06 21:32:56,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:32:56,648 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1497878027] [2021-10-06 21:32:56,648 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:32:56,648 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:32:56,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:32:56,649 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:32:56,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (79)] Waiting until timeout for monitored process [2021-10-06 21:32:57,356 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-06 21:32:57,357 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:32:57,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-06 21:32:57,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:32:57,603 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:32:57,603 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:32:58,442 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:32:58,443 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:32:58,443 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1497878027] [2021-10-06 21:32:58,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1497878027] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:32:58,443 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:32:58,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 21 [2021-10-06 21:32:58,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65112664] [2021-10-06 21:32:58,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-06 21:32:58,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:32:58,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-06 21:32:58,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:32:58,444 INFO L87 Difference]: Start difference. First operand 1348 states and 4534 transitions. Second operand has 21 states, 21 states have (on average 1.619047619047619) internal successors, (34), 21 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) [2021-10-06 21:33:07,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:33:07,025 INFO L93 Difference]: Finished difference Result 1658 states and 5246 transitions. [2021-10-06 21:33:07,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-10-06 21:33:07,027 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.619047619047619) internal successors, (34), 21 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 20 [2021-10-06 21:33:07,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:33:07,030 INFO L225 Difference]: With dead ends: 1658 [2021-10-06 21:33:07,030 INFO L226 Difference]: Without dead ends: 1652 [2021-10-06 21:33:07,030 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 487 ImplicationChecksByTransitivity, 7972.8ms TimeCoverageRelationStatistics Valid=617, Invalid=2035, Unknown=0, NotChecked=0, Total=2652 [2021-10-06 21:33:07,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1652 states. [2021-10-06 21:33:07,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1652 to 1390. [2021-10-06 21:33:07,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1390 states, 1389 states have (on average 3.3815694744420446) internal successors, (4697), 1389 states have internal predecessors, (4697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:33:07,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1390 states to 1390 states and 4697 transitions. [2021-10-06 21:33:07,056 INFO L78 Accepts]: Start accepts. Automaton has 1390 states and 4697 transitions. Word has length 20 [2021-10-06 21:33:07,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:33:07,057 INFO L470 AbstractCegarLoop]: Abstraction has 1390 states and 4697 transitions. [2021-10-06 21:33:07,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.619047619047619) internal successors, (34), 21 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) [2021-10-06 21:33:07,057 INFO L276 IsEmpty]: Start isEmpty. Operand 1390 states and 4697 transitions. [2021-10-06 21:33:07,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-06 21:33:07,060 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:33:07,060 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:33:07,074 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (79)] Forceful destruction successful, exit code 0 [2021-10-06 21:33:07,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 79 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:33:07,261 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:33:07,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:33:07,261 INFO L82 PathProgramCache]: Analyzing trace with hash -474959738, now seen corresponding path program 67 times [2021-10-06 21:33:07,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:33:07,262 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1115580012] [2021-10-06 21:33:07,262 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:33:07,263 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:33:07,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:33:07,264 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:33:07,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (80)] Waiting until timeout for monitored process [2021-10-06 21:33:07,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:33:07,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:33:07,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:33:08,219 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:33:08,220 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:33:09,271 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:33:09,271 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:33:09,271 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1115580012] [2021-10-06 21:33:09,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1115580012] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:33:09,271 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:33:09,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2021-10-06 21:33:09,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662794730] [2021-10-06 21:33:09,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-06 21:33:09,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:33:09,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-06 21:33:09,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462 [2021-10-06 21:33:09,273 INFO L87 Difference]: Start difference. First operand 1390 states and 4697 transitions. Second operand has 22 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:33:19,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:33:19,696 INFO L93 Difference]: Finished difference Result 1744 states and 5479 transitions. [2021-10-06 21:33:19,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-10-06 21:33:19,697 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-06 21:33:19,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:33:19,701 INFO L225 Difference]: With dead ends: 1744 [2021-10-06 21:33:19,702 INFO L226 Difference]: Without dead ends: 1744 [2021-10-06 21:33:19,702 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 478 ImplicationChecksByTransitivity, 9569.8ms TimeCoverageRelationStatistics Valid=686, Invalid=2284, Unknown=0, NotChecked=0, Total=2970 [2021-10-06 21:33:19,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1744 states. [2021-10-06 21:33:19,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1744 to 1434. [2021-10-06 21:33:19,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1434 states, 1433 states have (on average 3.393579902302861) internal successors, (4863), 1433 states have internal predecessors, (4863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:33:19,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1434 states to 1434 states and 4863 transitions. [2021-10-06 21:33:19,727 INFO L78 Accepts]: Start accepts. Automaton has 1434 states and 4863 transitions. Word has length 20 [2021-10-06 21:33:19,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:33:19,727 INFO L470 AbstractCegarLoop]: Abstraction has 1434 states and 4863 transitions. [2021-10-06 21:33:19,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:33:19,728 INFO L276 IsEmpty]: Start isEmpty. Operand 1434 states and 4863 transitions. [2021-10-06 21:33:19,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-06 21:33:19,739 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:33:19,739 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:33:19,751 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (80)] Ended with exit code 0 [2021-10-06 21:33:19,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:33:19,940 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:33:19,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:33:19,941 INFO L82 PathProgramCache]: Analyzing trace with hash 207363702, now seen corresponding path program 68 times [2021-10-06 21:33:19,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:33:19,941 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1973913805] [2021-10-06 21:33:19,942 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:33:19,942 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:33:19,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:33:19,943 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:33:19,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (81)] Waiting until timeout for monitored process [2021-10-06 21:33:20,711 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:33:20,711 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:33:20,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:33:20,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:33:20,947 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:33:20,947 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:33:22,082 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:33:22,083 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:33:22,083 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1973913805] [2021-10-06 21:33:22,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1973913805] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:33:22,083 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:33:22,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 21 [2021-10-06 21:33:22,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985391708] [2021-10-06 21:33:22,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-06 21:33:22,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:33:22,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-06 21:33:22,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=323, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:33:22,085 INFO L87 Difference]: Start difference. First operand 1434 states and 4863 transitions. Second operand has 21 states, 21 states have (on average 1.619047619047619) internal successors, (34), 21 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) [2021-10-06 21:33:35,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:33:35,368 INFO L93 Difference]: Finished difference Result 1922 states and 6119 transitions. [2021-10-06 21:33:35,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-10-06 21:33:35,369 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.619047619047619) internal successors, (34), 21 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 20 [2021-10-06 21:33:35,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:33:35,373 INFO L225 Difference]: With dead ends: 1922 [2021-10-06 21:33:35,373 INFO L226 Difference]: Without dead ends: 1920 [2021-10-06 21:33:35,373 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 635 ImplicationChecksByTransitivity, 11916.3ms TimeCoverageRelationStatistics Valid=762, Invalid=2318, Unknown=0, NotChecked=0, Total=3080 [2021-10-06 21:33:35,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1920 states. [2021-10-06 21:33:35,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1920 to 1550. [2021-10-06 21:33:35,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1550 states, 1549 states have (on average 3.4506132989025176) internal successors, (5345), 1549 states have internal predecessors, (5345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:33:35,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1550 states to 1550 states and 5345 transitions. [2021-10-06 21:33:35,402 INFO L78 Accepts]: Start accepts. Automaton has 1550 states and 5345 transitions. Word has length 20 [2021-10-06 21:33:35,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:33:35,402 INFO L470 AbstractCegarLoop]: Abstraction has 1550 states and 5345 transitions. [2021-10-06 21:33:35,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.619047619047619) internal successors, (34), 21 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) [2021-10-06 21:33:35,402 INFO L276 IsEmpty]: Start isEmpty. Operand 1550 states and 5345 transitions. [2021-10-06 21:33:35,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-06 21:33:35,406 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:33:35,406 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:33:35,419 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (81)] Forceful destruction successful, exit code 0 [2021-10-06 21:33:35,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:33:35,606 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:33:35,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:33:35,607 INFO L82 PathProgramCache]: Analyzing trace with hash 1003684176, now seen corresponding path program 69 times [2021-10-06 21:33:35,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:33:35,608 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [544782863] [2021-10-06 21:33:35,608 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:33:35,608 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:33:35,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:33:35,609 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:33:35,610 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (82)] Waiting until timeout for monitored process [2021-10-06 21:33:36,367 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-06 21:33:36,367 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:33:36,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:33:36,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:33:36,615 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:33:36,615 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:33:37,713 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:33:37,713 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:33:37,713 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [544782863] [2021-10-06 21:33:37,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [544782863] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:33:37,714 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:33:37,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2021-10-06 21:33:37,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8919785] [2021-10-06 21:33:37,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-06 21:33:37,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:33:37,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-06 21:33:37,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=356, Unknown=0, NotChecked=0, Total=462 [2021-10-06 21:33:37,715 INFO L87 Difference]: Start difference. First operand 1550 states and 5345 transitions. Second operand has 22 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:33:51,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:33:51,295 INFO L93 Difference]: Finished difference Result 2056 states and 6423 transitions. [2021-10-06 21:33:51,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-10-06 21:33:51,296 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-06 21:33:51,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:33:51,300 INFO L225 Difference]: With dead ends: 2056 [2021-10-06 21:33:51,300 INFO L226 Difference]: Without dead ends: 2036 [2021-10-06 21:33:51,301 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 559 ImplicationChecksByTransitivity, 12752.2ms TimeCoverageRelationStatistics Valid=636, Invalid=2334, Unknown=0, NotChecked=0, Total=2970 [2021-10-06 21:33:51,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2036 states. [2021-10-06 21:33:51,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2036 to 1594. [2021-10-06 21:33:51,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1594 states, 1593 states have (on average 3.458254865034526) internal successors, (5509), 1593 states have internal predecessors, (5509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:33:51,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1594 states to 1594 states and 5509 transitions. [2021-10-06 21:33:51,333 INFO L78 Accepts]: Start accepts. Automaton has 1594 states and 5509 transitions. Word has length 20 [2021-10-06 21:33:51,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:33:51,333 INFO L470 AbstractCegarLoop]: Abstraction has 1594 states and 5509 transitions. [2021-10-06 21:33:51,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:33:51,333 INFO L276 IsEmpty]: Start isEmpty. Operand 1594 states and 5509 transitions. [2021-10-06 21:33:51,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-06 21:33:51,336 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:33:51,336 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:33:51,351 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (82)] Forceful destruction successful, exit code 0 [2021-10-06 21:33:51,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:33:51,537 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:33:51,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:33:51,538 INFO L82 PathProgramCache]: Analyzing trace with hash 1818304660, now seen corresponding path program 70 times [2021-10-06 21:33:51,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:33:51,539 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1742697412] [2021-10-06 21:33:51,539 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:33:51,539 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:33:51,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:33:51,540 INFO L229 MonitoredProcess]: Starting monitored process 83 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:33:51,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (83)] Waiting until timeout for monitored process [2021-10-06 21:33:52,345 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:33:52,346 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:33:52,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:33:52,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:33:52,570 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:33:52,570 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:33:53,451 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:33:53,452 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:33:53,452 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1742697412] [2021-10-06 21:33:53,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1742697412] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:33:53,452 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:33:53,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-10-06 21:33:53,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316057591] [2021-10-06 21:33:53,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:33:53,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:33:53,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:33:53,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:33:53,453 INFO L87 Difference]: Start difference. First operand 1594 states and 5509 transitions. Second operand has 20 states, 20 states have (on average 1.65) internal successors, (33), 20 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:33:59,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:33:59,172 INFO L93 Difference]: Finished difference Result 2074 states and 6697 transitions. [2021-10-06 21:33:59,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-10-06 21:33:59,173 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.65) internal successors, (33), 20 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-06 21:33:59,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:33:59,177 INFO L225 Difference]: With dead ends: 2074 [2021-10-06 21:33:59,177 INFO L226 Difference]: Without dead ends: 2070 [2021-10-06 21:33:59,178 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 572 ImplicationChecksByTransitivity, 4601.6ms TimeCoverageRelationStatistics Valid=668, Invalid=2088, Unknown=0, NotChecked=0, Total=2756 [2021-10-06 21:33:59,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2070 states. [2021-10-06 21:33:59,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2070 to 1656. [2021-10-06 21:33:59,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1656 states, 1655 states have (on average 3.4501510574018126) internal successors, (5710), 1655 states have internal predecessors, (5710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:33:59,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1656 states to 1656 states and 5710 transitions. [2021-10-06 21:33:59,210 INFO L78 Accepts]: Start accepts. Automaton has 1656 states and 5710 transitions. Word has length 20 [2021-10-06 21:33:59,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:33:59,210 INFO L470 AbstractCegarLoop]: Abstraction has 1656 states and 5710 transitions. [2021-10-06 21:33:59,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.65) internal successors, (33), 20 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:33:59,210 INFO L276 IsEmpty]: Start isEmpty. Operand 1656 states and 5710 transitions. [2021-10-06 21:33:59,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-06 21:33:59,214 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:33:59,214 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:33:59,226 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (83)] Ended with exit code 0 [2021-10-06 21:33:59,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:33:59,415 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:33:59,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:33:59,415 INFO L82 PathProgramCache]: Analyzing trace with hash -1791540964, now seen corresponding path program 71 times [2021-10-06 21:33:59,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:33:59,416 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1519665733] [2021-10-06 21:33:59,416 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:33:59,417 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:33:59,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:33:59,418 INFO L229 MonitoredProcess]: Starting monitored process 84 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:33:59,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (84)] Waiting until timeout for monitored process [2021-10-06 21:34:00,199 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-06 21:34:00,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:34:00,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-06 21:34:00,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:34:00,414 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:34:00,415 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:34:01,357 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:34:01,358 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:34:01,358 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1519665733] [2021-10-06 21:34:01,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1519665733] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:34:01,358 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:34:01,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-10-06 21:34:01,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259284461] [2021-10-06 21:34:01,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:34:01,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:34:01,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:34:01,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:34:01,360 INFO L87 Difference]: Start difference. First operand 1656 states and 5710 transitions. Second operand has 20 states, 20 states have (on average 1.75) internal successors, (35), 20 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:34:09,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:34:09,910 INFO L93 Difference]: Finished difference Result 2224 states and 6996 transitions. [2021-10-06 21:34:09,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-10-06 21:34:09,911 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.75) internal successors, (35), 20 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-06 21:34:09,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:34:09,915 INFO L225 Difference]: With dead ends: 2224 [2021-10-06 21:34:09,915 INFO L226 Difference]: Without dead ends: 2180 [2021-10-06 21:34:09,915 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1034 ImplicationChecksByTransitivity, 7084.4ms TimeCoverageRelationStatistics Valid=974, Invalid=3448, Unknown=0, NotChecked=0, Total=4422 [2021-10-06 21:34:09,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2180 states. [2021-10-06 21:34:09,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2180 to 1646. [2021-10-06 21:34:09,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1646 states, 1645 states have (on average 3.4364741641337386) internal successors, (5653), 1645 states have internal predecessors, (5653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:34:09,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1646 states to 1646 states and 5653 transitions. [2021-10-06 21:34:09,948 INFO L78 Accepts]: Start accepts. Automaton has 1646 states and 5653 transitions. Word has length 20 [2021-10-06 21:34:09,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:34:09,948 INFO L470 AbstractCegarLoop]: Abstraction has 1646 states and 5653 transitions. [2021-10-06 21:34:09,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.75) internal successors, (35), 20 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:34:09,948 INFO L276 IsEmpty]: Start isEmpty. Operand 1646 states and 5653 transitions. [2021-10-06 21:34:09,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-06 21:34:09,952 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:34:09,952 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:34:09,964 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (84)] Ended with exit code 0 [2021-10-06 21:34:10,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 84 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:34:10,153 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:34:10,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:34:10,153 INFO L82 PathProgramCache]: Analyzing trace with hash 2133397780, now seen corresponding path program 72 times [2021-10-06 21:34:10,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:34:10,154 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [363790987] [2021-10-06 21:34:10,154 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:34:10,154 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:34:10,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:34:10,156 INFO L229 MonitoredProcess]: Starting monitored process 85 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:34:10,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (85)] Waiting until timeout for monitored process [2021-10-06 21:34:10,960 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-06 21:34:10,961 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:34:10,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:34:10,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:34:11,176 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:34:11,176 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:34:12,376 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:34:12,376 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:34:12,376 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [363790987] [2021-10-06 21:34:12,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [363790987] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:34:12,377 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:34:12,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 21 [2021-10-06 21:34:12,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914246941] [2021-10-06 21:34:12,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-06 21:34:12,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:34:12,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-06 21:34:12,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=328, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:34:12,378 INFO L87 Difference]: Start difference. First operand 1646 states and 5653 transitions. Second operand has 21 states, 21 states have (on average 1.619047619047619) internal successors, (34), 21 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) [2021-10-06 21:35:00,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:35:00,819 INFO L93 Difference]: Finished difference Result 2240 states and 7010 transitions. [2021-10-06 21:35:00,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-10-06 21:35:00,821 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.619047619047619) internal successors, (34), 21 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 20 [2021-10-06 21:35:00,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:35:00,825 INFO L225 Difference]: With dead ends: 2240 [2021-10-06 21:35:00,826 INFO L226 Difference]: Without dead ends: 2238 [2021-10-06 21:35:00,826 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1102 ImplicationChecksByTransitivity, 44446.9ms TimeCoverageRelationStatistics Valid=1004, Invalid=3552, Unknown=0, NotChecked=0, Total=4556 [2021-10-06 21:35:00,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2238 states. [2021-10-06 21:35:00,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2238 to 1742. [2021-10-06 21:35:00,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1742 states, 1741 states have (on average 3.4836300976450314) internal successors, (6065), 1741 states have internal predecessors, (6065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:35:00,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1742 states to 1742 states and 6065 transitions. [2021-10-06 21:35:00,872 INFO L78 Accepts]: Start accepts. Automaton has 1742 states and 6065 transitions. Word has length 20 [2021-10-06 21:35:00,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:35:00,872 INFO L470 AbstractCegarLoop]: Abstraction has 1742 states and 6065 transitions. [2021-10-06 21:35:00,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.619047619047619) internal successors, (34), 21 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) [2021-10-06 21:35:00,873 INFO L276 IsEmpty]: Start isEmpty. Operand 1742 states and 6065 transitions. [2021-10-06 21:35:00,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-06 21:35:00,876 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:35:00,876 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:35:00,889 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (85)] Ended with exit code 0 [2021-10-06 21:35:01,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:35:01,077 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:35:01,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:35:01,078 INFO L82 PathProgramCache]: Analyzing trace with hash -550628558, now seen corresponding path program 73 times [2021-10-06 21:35:01,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:35:01,079 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2115248123] [2021-10-06 21:35:01,079 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:35:01,080 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:35:01,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:35:01,081 INFO L229 MonitoredProcess]: Starting monitored process 86 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:35:01,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (86)] Waiting until timeout for monitored process [2021-10-06 21:35:01,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:35:01,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:35:01,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:35:02,026 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:35:02,026 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:35:02,878 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:35:02,878 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:35:02,878 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2115248123] [2021-10-06 21:35:02,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2115248123] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:35:02,878 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:35:02,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-10-06 21:35:02,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421606843] [2021-10-06 21:35:02,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:35:02,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:35:02,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:35:02,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:35:02,880 INFO L87 Difference]: Start difference. First operand 1742 states and 6065 transitions. Second operand has 20 states, 20 states have (on average 1.65) internal successors, (33), 20 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:35:07,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:35:07,111 INFO L93 Difference]: Finished difference Result 2242 states and 7522 transitions. [2021-10-06 21:35:07,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-06 21:35:07,112 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.65) internal successors, (33), 20 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-06 21:35:07,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:35:07,117 INFO L225 Difference]: With dead ends: 2242 [2021-10-06 21:35:07,117 INFO L226 Difference]: Without dead ends: 2238 [2021-10-06 21:35:07,118 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 3277.9ms TimeCoverageRelationStatistics Valid=427, Invalid=1213, Unknown=0, NotChecked=0, Total=1640 [2021-10-06 21:35:07,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2238 states. [2021-10-06 21:35:07,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2238 to 1844. [2021-10-06 21:35:07,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1844 states, 1843 states have (on average 3.5051546391752577) internal successors, (6460), 1843 states have internal predecessors, (6460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:35:07,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1844 states to 1844 states and 6460 transitions. [2021-10-06 21:35:07,159 INFO L78 Accepts]: Start accepts. Automaton has 1844 states and 6460 transitions. Word has length 20 [2021-10-06 21:35:07,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:35:07,159 INFO L470 AbstractCegarLoop]: Abstraction has 1844 states and 6460 transitions. [2021-10-06 21:35:07,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.65) internal successors, (33), 20 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:35:07,160 INFO L276 IsEmpty]: Start isEmpty. Operand 1844 states and 6460 transitions. [2021-10-06 21:35:07,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-06 21:35:07,164 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:35:07,164 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:35:07,180 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (86)] Ended with exit code 0 [2021-10-06 21:35:07,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 86 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:35:07,380 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:35:07,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:35:07,380 INFO L82 PathProgramCache]: Analyzing trace with hash 134493114, now seen corresponding path program 74 times [2021-10-06 21:35:07,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:35:07,381 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [518939740] [2021-10-06 21:35:07,382 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:35:07,382 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:35:07,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:35:07,383 INFO L229 MonitoredProcess]: Starting monitored process 87 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:35:07,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (87)] Waiting until timeout for monitored process [2021-10-06 21:35:08,294 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:35:08,294 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:35:08,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:35:08,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:35:08,508 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:35:08,508 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:35:09,175 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:35:09,175 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:35:09,175 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [518939740] [2021-10-06 21:35:09,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [518939740] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:35:09,175 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:35:09,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-10-06 21:35:09,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282136690] [2021-10-06 21:35:09,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:35:09,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:35:09,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:35:09,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:35:09,177 INFO L87 Difference]: Start difference. First operand 1844 states and 6460 transitions. Second operand has 20 states, 20 states have (on average 1.75) internal successors, (35), 20 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:35:16,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:35:16,285 INFO L93 Difference]: Finished difference Result 2382 states and 7707 transitions. [2021-10-06 21:35:16,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-10-06 21:35:16,286 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.75) internal successors, (35), 20 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-06 21:35:16,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:35:16,292 INFO L225 Difference]: With dead ends: 2382 [2021-10-06 21:35:16,292 INFO L226 Difference]: Without dead ends: 2338 [2021-10-06 21:35:16,292 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1084 ImplicationChecksByTransitivity, 5614.2ms TimeCoverageRelationStatistics Valid=904, Invalid=3518, Unknown=0, NotChecked=0, Total=4422 [2021-10-06 21:35:16,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2338 states. [2021-10-06 21:35:16,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2338 to 1830. [2021-10-06 21:35:16,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1830 states, 1829 states have (on average 3.5008201202843083) internal successors, (6403), 1829 states have internal predecessors, (6403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:35:16,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1830 states to 1830 states and 6403 transitions. [2021-10-06 21:35:16,337 INFO L78 Accepts]: Start accepts. Automaton has 1830 states and 6403 transitions. Word has length 20 [2021-10-06 21:35:16,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:35:16,337 INFO L470 AbstractCegarLoop]: Abstraction has 1830 states and 6403 transitions. [2021-10-06 21:35:16,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.75) internal successors, (35), 20 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:35:16,337 INFO L276 IsEmpty]: Start isEmpty. Operand 1830 states and 6403 transitions. [2021-10-06 21:35:16,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-06 21:35:16,342 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:35:16,342 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:35:16,356 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (87)] Ended with exit code 0 [2021-10-06 21:35:16,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:35:16,549 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:35:16,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:35:16,549 INFO L82 PathProgramCache]: Analyzing trace with hash 2084914704, now seen corresponding path program 75 times [2021-10-06 21:35:16,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:35:16,550 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1353795307] [2021-10-06 21:35:16,550 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:35:16,550 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:35:16,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:35:16,552 INFO L229 MonitoredProcess]: Starting monitored process 88 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:35:16,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (88)] Waiting until timeout for monitored process [2021-10-06 21:35:17,429 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-06 21:35:17,430 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:35:17,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-06 21:35:17,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:35:17,686 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:35:17,687 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:35:18,604 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:35:18,604 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:35:18,604 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1353795307] [2021-10-06 21:35:18,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1353795307] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:35:18,605 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:35:18,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2021-10-06 21:35:18,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392938046] [2021-10-06 21:35:18,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-06 21:35:18,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:35:18,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-06 21:35:18,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2021-10-06 21:35:18,606 INFO L87 Difference]: Start difference. First operand 1830 states and 6403 transitions. Second operand has 22 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:35:28,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:35:28,901 INFO L93 Difference]: Finished difference Result 2176 states and 7218 transitions. [2021-10-06 21:35:28,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-06 21:35:28,903 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-06 21:35:28,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:35:28,907 INFO L225 Difference]: With dead ends: 2176 [2021-10-06 21:35:28,907 INFO L226 Difference]: Without dead ends: 2164 [2021-10-06 21:35:28,907 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 8804.0ms TimeCoverageRelationStatistics Valid=547, Invalid=1709, Unknown=0, NotChecked=0, Total=2256 [2021-10-06 21:35:28,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2164 states. [2021-10-06 21:35:28,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2164 to 1876. [2021-10-06 21:35:28,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1876 states, 1875 states have (on average 3.5008) internal successors, (6564), 1875 states have internal predecessors, (6564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:35:28,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1876 states to 1876 states and 6564 transitions. [2021-10-06 21:35:28,946 INFO L78 Accepts]: Start accepts. Automaton has 1876 states and 6564 transitions. Word has length 20 [2021-10-06 21:35:28,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:35:28,946 INFO L470 AbstractCegarLoop]: Abstraction has 1876 states and 6564 transitions. [2021-10-06 21:35:28,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:35:28,946 INFO L276 IsEmpty]: Start isEmpty. Operand 1876 states and 6564 transitions. [2021-10-06 21:35:28,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-06 21:35:28,951 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:35:28,951 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:35:28,964 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (88)] Forceful destruction successful, exit code 0 [2021-10-06 21:35:29,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 88 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:35:29,152 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:35:29,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:35:29,152 INFO L82 PathProgramCache]: Analyzing trace with hash 1287999584, now seen corresponding path program 76 times [2021-10-06 21:35:29,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:35:29,153 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1649312595] [2021-10-06 21:35:29,153 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:35:29,153 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:35:29,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:35:29,155 INFO L229 MonitoredProcess]: Starting monitored process 89 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:35:29,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (89)] Waiting until timeout for monitored process [2021-10-06 21:35:29,989 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:35:29,989 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:35:29,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:35:29,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:35:30,229 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:35:30,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:35:31,031 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:35:31,031 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:35:31,031 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1649312595] [2021-10-06 21:35:31,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1649312595] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:35:31,031 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:35:31,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-10-06 21:35:31,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863926476] [2021-10-06 21:35:31,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:35:31,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:35:31,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:35:31,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:35:31,033 INFO L87 Difference]: Start difference. First operand 1876 states and 6564 transitions. Second operand has 20 states, 20 states have (on average 1.65) internal successors, (33), 20 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:35:36,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:35:36,403 INFO L93 Difference]: Finished difference Result 2138 states and 7441 transitions. [2021-10-06 21:35:36,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-06 21:35:36,404 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.65) internal successors, (33), 20 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-06 21:35:36,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:35:36,408 INFO L225 Difference]: With dead ends: 2138 [2021-10-06 21:35:36,408 INFO L226 Difference]: Without dead ends: 2132 [2021-10-06 21:35:36,408 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 3640.7ms TimeCoverageRelationStatistics Valid=498, Invalid=1394, Unknown=0, NotChecked=0, Total=1892 [2021-10-06 21:35:36,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2132 states. [2021-10-06 21:35:36,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2132 to 1908. [2021-10-06 21:35:36,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1908 states, 1907 states have (on average 3.5091767173571053) internal successors, (6692), 1907 states have internal predecessors, (6692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:35:36,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1908 states to 1908 states and 6692 transitions. [2021-10-06 21:35:36,441 INFO L78 Accepts]: Start accepts. Automaton has 1908 states and 6692 transitions. Word has length 20 [2021-10-06 21:35:36,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:35:36,441 INFO L470 AbstractCegarLoop]: Abstraction has 1908 states and 6692 transitions. [2021-10-06 21:35:36,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.65) internal successors, (33), 20 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:35:36,441 INFO L276 IsEmpty]: Start isEmpty. Operand 1908 states and 6692 transitions. [2021-10-06 21:35:36,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-06 21:35:36,445 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:35:36,445 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:35:36,458 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (89)] Forceful destruction successful, exit code 0 [2021-10-06 21:35:36,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 89 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:35:36,646 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:35:36,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:35:36,647 INFO L82 PathProgramCache]: Analyzing trace with hash 1000897518, now seen corresponding path program 77 times [2021-10-06 21:35:36,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:35:36,648 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1651062563] [2021-10-06 21:35:36,648 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:35:36,648 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:35:36,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:35:36,649 INFO L229 MonitoredProcess]: Starting monitored process 90 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:35:36,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (90)] Waiting until timeout for monitored process [2021-10-06 21:35:37,433 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:35:37,434 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:35:37,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:35:37,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:35:37,699 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:35:37,700 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:35:38,684 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:35:38,684 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:35:38,684 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1651062563] [2021-10-06 21:35:38,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1651062563] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:35:38,684 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:35:38,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2021-10-06 21:35:38,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745679780] [2021-10-06 21:35:38,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-06 21:35:38,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:35:38,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-06 21:35:38,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462 [2021-10-06 21:35:38,685 INFO L87 Difference]: Start difference. First operand 1908 states and 6692 transitions. Second operand has 22 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:35:49,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:35:49,617 INFO L93 Difference]: Finished difference Result 2264 states and 7460 transitions. [2021-10-06 21:35:49,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-06 21:35:49,618 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-06 21:35:49,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:35:49,623 INFO L225 Difference]: With dead ends: 2264 [2021-10-06 21:35:49,623 INFO L226 Difference]: Without dead ends: 2264 [2021-10-06 21:35:49,623 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 9682.4ms TimeCoverageRelationStatistics Valid=543, Invalid=1713, Unknown=0, NotChecked=0, Total=2256 [2021-10-06 21:35:49,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2264 states. [2021-10-06 21:35:49,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2264 to 1924. [2021-10-06 21:35:49,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1924 states, 1923 states have (on average 3.515340613624545) internal successors, (6760), 1923 states have internal predecessors, (6760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:35:49,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1924 states to 1924 states and 6760 transitions. [2021-10-06 21:35:49,661 INFO L78 Accepts]: Start accepts. Automaton has 1924 states and 6760 transitions. Word has length 20 [2021-10-06 21:35:49,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:35:49,661 INFO L470 AbstractCegarLoop]: Abstraction has 1924 states and 6760 transitions. [2021-10-06 21:35:49,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:35:49,661 INFO L276 IsEmpty]: Start isEmpty. Operand 1924 states and 6760 transitions. [2021-10-06 21:35:49,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-06 21:35:49,665 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:35:49,665 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:35:49,678 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (90)] Ended with exit code 0 [2021-10-06 21:35:49,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 90 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:35:49,866 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:35:49,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:35:49,867 INFO L82 PathProgramCache]: Analyzing trace with hash 868331918, now seen corresponding path program 78 times [2021-10-06 21:35:49,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:35:49,867 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1869518311] [2021-10-06 21:35:49,867 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:35:49,868 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:35:49,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:35:49,869 INFO L229 MonitoredProcess]: Starting monitored process 91 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:35:49,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (91)] Waiting until timeout for monitored process [2021-10-06 21:35:50,787 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-10-06 21:35:50,787 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:35:50,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:35:50,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:35:51,023 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:35:51,024 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:35:51,896 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:35:51,897 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:35:51,897 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1869518311] [2021-10-06 21:35:51,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1869518311] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:35:51,897 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:35:51,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-10-06 21:35:51,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904487340] [2021-10-06 21:35:51,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:35:51,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:35:51,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:35:51,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:35:51,899 INFO L87 Difference]: Start difference. First operand 1924 states and 6760 transitions. Second operand has 20 states, 20 states have (on average 1.5) internal successors, (30), 20 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:35:54,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:35:54,474 INFO L93 Difference]: Finished difference Result 2268 states and 7569 transitions. [2021-10-06 21:35:54,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-06 21:35:54,475 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.5) internal successors, (30), 20 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-06 21:35:54,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:35:54,480 INFO L225 Difference]: With dead ends: 2268 [2021-10-06 21:35:54,480 INFO L226 Difference]: Without dead ends: 2264 [2021-10-06 21:35:54,480 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 2409.9ms TimeCoverageRelationStatistics Valid=271, Invalid=785, Unknown=0, NotChecked=0, Total=1056 [2021-10-06 21:35:54,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2264 states. [2021-10-06 21:35:54,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2264 to 1962. [2021-10-06 21:35:54,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1962 states, 1961 states have (on average 3.499745028046915) internal successors, (6863), 1961 states have internal predecessors, (6863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:35:54,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1962 states to 1962 states and 6863 transitions. [2021-10-06 21:35:54,524 INFO L78 Accepts]: Start accepts. Automaton has 1962 states and 6863 transitions. Word has length 20 [2021-10-06 21:35:54,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:35:54,524 INFO L470 AbstractCegarLoop]: Abstraction has 1962 states and 6863 transitions. [2021-10-06 21:35:54,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.5) internal successors, (30), 20 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:35:54,524 INFO L276 IsEmpty]: Start isEmpty. Operand 1962 states and 6863 transitions. [2021-10-06 21:35:54,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-06 21:35:54,528 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:35:54,528 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:35:54,541 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (91)] Ended with exit code 0 [2021-10-06 21:35:54,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 91 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:35:54,729 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:35:54,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:35:54,729 INFO L82 PathProgramCache]: Analyzing trace with hash 12430618, now seen corresponding path program 79 times [2021-10-06 21:35:54,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:35:54,730 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1800954087] [2021-10-06 21:35:54,730 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:35:54,730 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:35:54,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:35:54,732 INFO L229 MonitoredProcess]: Starting monitored process 92 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:35:54,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (92)] Waiting until timeout for monitored process [2021-10-06 21:35:55,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:35:55,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:35:55,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:35:55,738 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:35:55,738 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:35:56,703 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:35:56,704 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:35:56,704 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1800954087] [2021-10-06 21:35:56,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1800954087] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:35:56,704 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:35:56,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-10-06 21:35:56,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029814248] [2021-10-06 21:35:56,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:35:56,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:35:56,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:35:56,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:35:56,706 INFO L87 Difference]: Start difference. First operand 1962 states and 6863 transitions. Second operand has 20 states, 20 states have (on average 1.5) internal successors, (30), 20 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:35:59,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:35:59,801 INFO L93 Difference]: Finished difference Result 2088 states and 7176 transitions. [2021-10-06 21:35:59,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-06 21:35:59,802 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.5) internal successors, (30), 20 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-06 21:35:59,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:35:59,806 INFO L225 Difference]: With dead ends: 2088 [2021-10-06 21:35:59,806 INFO L226 Difference]: Without dead ends: 2082 [2021-10-06 21:35:59,806 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 2526.6ms TimeCoverageRelationStatistics Valid=323, Invalid=867, Unknown=0, NotChecked=0, Total=1190 [2021-10-06 21:35:59,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2082 states. [2021-10-06 21:35:59,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2082 to 1960. [2021-10-06 21:35:59,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1960 states, 1959 states have (on average 3.493619193466054) internal successors, (6844), 1959 states have internal predecessors, (6844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:35:59,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1960 states to 1960 states and 6844 transitions. [2021-10-06 21:35:59,838 INFO L78 Accepts]: Start accepts. Automaton has 1960 states and 6844 transitions. Word has length 20 [2021-10-06 21:35:59,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:35:59,838 INFO L470 AbstractCegarLoop]: Abstraction has 1960 states and 6844 transitions. [2021-10-06 21:35:59,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.5) internal successors, (30), 20 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:35:59,838 INFO L276 IsEmpty]: Start isEmpty. Operand 1960 states and 6844 transitions. [2021-10-06 21:35:59,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-06 21:35:59,841 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:35:59,841 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:35:59,854 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (92)] Forceful destruction successful, exit code 0 [2021-10-06 21:36:00,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:36:00,042 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:36:00,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:36:00,043 INFO L82 PathProgramCache]: Analyzing trace with hash 1664652392, now seen corresponding path program 80 times [2021-10-06 21:36:00,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:36:00,044 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [537305008] [2021-10-06 21:36:00,044 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:36:00,044 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:36:00,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:36:00,046 INFO L229 MonitoredProcess]: Starting monitored process 93 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:36:00,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (93)] Waiting until timeout for monitored process [2021-10-06 21:36:00,922 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:36:00,922 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:36:00,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:36:00,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:36:01,178 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:36:01,178 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:36:02,133 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:36:02,133 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:36:02,133 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [537305008] [2021-10-06 21:36:02,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [537305008] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:36:02,133 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:36:02,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2021-10-06 21:36:02,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84157518] [2021-10-06 21:36:02,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-06 21:36:02,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:36:02,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-06 21:36:02,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=365, Unknown=0, NotChecked=0, Total=462 [2021-10-06 21:36:02,134 INFO L87 Difference]: Start difference. First operand 1960 states and 6844 transitions. Second operand has 22 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 22 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) [2021-10-06 21:36:19,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:36:19,453 INFO L93 Difference]: Finished difference Result 2584 states and 8342 transitions. [2021-10-06 21:36:19,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-10-06 21:36:19,454 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 22 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-06 21:36:19,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:36:19,458 INFO L225 Difference]: With dead ends: 2584 [2021-10-06 21:36:19,459 INFO L226 Difference]: Without dead ends: 2564 [2021-10-06 21:36:19,459 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 896 ImplicationChecksByTransitivity, 13725.9ms TimeCoverageRelationStatistics Valid=726, Invalid=3056, Unknown=0, NotChecked=0, Total=3782 [2021-10-06 21:36:19,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2564 states. [2021-10-06 21:36:19,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2564 to 2086. [2021-10-06 21:36:19,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2086 states, 2085 states have (on average 3.512230215827338) internal successors, (7323), 2085 states have internal predecessors, (7323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:36:19,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2086 states to 2086 states and 7323 transitions. [2021-10-06 21:36:19,501 INFO L78 Accepts]: Start accepts. Automaton has 2086 states and 7323 transitions. Word has length 20 [2021-10-06 21:36:19,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:36:19,501 INFO L470 AbstractCegarLoop]: Abstraction has 2086 states and 7323 transitions. [2021-10-06 21:36:19,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 22 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) [2021-10-06 21:36:19,501 INFO L276 IsEmpty]: Start isEmpty. Operand 2086 states and 7323 transitions. [2021-10-06 21:36:19,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-06 21:36:19,505 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:36:19,505 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:36:19,518 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (93)] Ended with exit code 0 [2021-10-06 21:36:19,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 93 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:36:19,706 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:36:19,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:36:19,707 INFO L82 PathProgramCache]: Analyzing trace with hash -1815694420, now seen corresponding path program 81 times [2021-10-06 21:36:19,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:36:19,708 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1815155609] [2021-10-06 21:36:19,708 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:36:19,708 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:36:19,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:36:19,710 INFO L229 MonitoredProcess]: Starting monitored process 94 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:36:19,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (94)] Waiting until timeout for monitored process [2021-10-06 21:36:20,647 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-10-06 21:36:20,648 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:36:20,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-06 21:36:20,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:36:20,906 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:36:20,907 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:36:21,754 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:36:21,754 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:36:21,754 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1815155609] [2021-10-06 21:36:21,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1815155609] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:36:21,754 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:36:21,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 21 [2021-10-06 21:36:21,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584645749] [2021-10-06 21:36:21,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-06 21:36:21,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:36:21,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-06 21:36:21,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=333, Unknown=0, NotChecked=0, Total=420 [2021-10-06 21:36:21,756 INFO L87 Difference]: Start difference. First operand 2086 states and 7323 transitions. Second operand has 21 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 21 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:36:31,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:36:31,511 INFO L93 Difference]: Finished difference Result 2602 states and 8561 transitions. [2021-10-06 21:36:31,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-10-06 21:36:31,513 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 21 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-06 21:36:31,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:36:31,521 INFO L225 Difference]: With dead ends: 2602 [2021-10-06 21:36:31,521 INFO L226 Difference]: Without dead ends: 2598 [2021-10-06 21:36:31,522 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 508 ImplicationChecksByTransitivity, 7920.2ms TimeCoverageRelationStatistics Valid=514, Invalid=2036, Unknown=0, NotChecked=0, Total=2550 [2021-10-06 21:36:31,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2598 states. [2021-10-06 21:36:31,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2598 to 2178. [2021-10-06 21:36:31,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2178 states, 2177 states have (on average 3.5291685806155257) internal successors, (7683), 2177 states have internal predecessors, (7683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:36:31,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2178 states to 2178 states and 7683 transitions. [2021-10-06 21:36:31,597 INFO L78 Accepts]: Start accepts. Automaton has 2178 states and 7683 transitions. Word has length 20 [2021-10-06 21:36:31,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:36:31,598 INFO L470 AbstractCegarLoop]: Abstraction has 2178 states and 7683 transitions. [2021-10-06 21:36:31,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 21 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:36:31,598 INFO L276 IsEmpty]: Start isEmpty. Operand 2178 states and 7683 transitions. [2021-10-06 21:36:31,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-06 21:36:31,603 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:36:31,603 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:36:31,621 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (94)] Forceful destruction successful, exit code 0 [2021-10-06 21:36:31,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:36:31,817 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:36:31,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:36:31,817 INFO L82 PathProgramCache]: Analyzing trace with hash -1500601300, now seen corresponding path program 82 times [2021-10-06 21:36:31,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:36:31,818 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [969730589] [2021-10-06 21:36:31,818 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:36:31,818 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:36:31,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:36:31,820 INFO L229 MonitoredProcess]: Starting monitored process 95 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:36:31,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (95)] Waiting until timeout for monitored process [2021-10-06 21:36:32,685 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:36:32,685 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:36:32,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:36:32,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:36:32,916 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:36:32,916 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:36:33,791 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:36:33,792 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:36:33,792 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [969730589] [2021-10-06 21:36:33,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [969730589] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:36:33,792 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:36:33,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-10-06 21:36:33,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522414663] [2021-10-06 21:36:33,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:36:33,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:36:33,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:36:33,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:36:33,794 INFO L87 Difference]: Start difference. First operand 2178 states and 7683 transitions. Second operand has 20 states, 20 states have (on average 1.5) internal successors, (30), 20 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:36:37,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:36:37,750 INFO L93 Difference]: Finished difference Result 2562 states and 8739 transitions. [2021-10-06 21:36:37,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-06 21:36:37,751 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.5) internal successors, (30), 20 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-06 21:36:37,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:36:37,757 INFO L225 Difference]: With dead ends: 2562 [2021-10-06 21:36:37,757 INFO L226 Difference]: Without dead ends: 2558 [2021-10-06 21:36:37,757 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 3339.1ms TimeCoverageRelationStatistics Valid=376, Invalid=1106, Unknown=0, NotChecked=0, Total=1482 [2021-10-06 21:36:37,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2558 states. [2021-10-06 21:36:37,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2558 to 2252. [2021-10-06 21:36:37,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2252 states, 2251 states have (on average 3.525544202576633) internal successors, (7936), 2251 states have internal predecessors, (7936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:36:37,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2252 states to 2252 states and 7936 transitions. [2021-10-06 21:36:37,800 INFO L78 Accepts]: Start accepts. Automaton has 2252 states and 7936 transitions. Word has length 20 [2021-10-06 21:36:37,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:36:37,800 INFO L470 AbstractCegarLoop]: Abstraction has 2252 states and 7936 transitions. [2021-10-06 21:36:37,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.5) internal successors, (30), 20 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:36:37,800 INFO L276 IsEmpty]: Start isEmpty. Operand 2252 states and 7936 transitions. [2021-10-06 21:36:37,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-06 21:36:37,804 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:36:37,804 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:36:37,818 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (95)] Forceful destruction successful, exit code 0 [2021-10-06 21:36:38,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:36:38,005 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:36:38,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:36:38,006 INFO L82 PathProgramCache]: Analyzing trace with hash 110339658, now seen corresponding path program 83 times [2021-10-06 21:36:38,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:36:38,007 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1705027954] [2021-10-06 21:36:38,007 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:36:38,007 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:36:38,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:36:38,008 INFO L229 MonitoredProcess]: Starting monitored process 96 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:36:38,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (96)] Waiting until timeout for monitored process [2021-10-06 21:36:38,942 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-06 21:36:38,943 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:36:38,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-06 21:36:38,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:36:39,160 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:36:39,160 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:36:40,578 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:36:40,578 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:36:40,579 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1705027954] [2021-10-06 21:36:40,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1705027954] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:36:40,579 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:36:40,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-10-06 21:36:40,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863549366] [2021-10-06 21:36:40,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:36:40,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:36:40,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:36:40,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:36:40,580 INFO L87 Difference]: Start difference. First operand 2252 states and 7936 transitions. Second operand has 20 states, 20 states have (on average 1.5) internal successors, (30), 20 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:36:49,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:36:49,662 INFO L93 Difference]: Finished difference Result 2862 states and 9606 transitions. [2021-10-06 21:36:49,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-10-06 21:36:49,663 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.5) internal successors, (30), 20 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-06 21:36:49,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:36:49,671 INFO L225 Difference]: With dead ends: 2862 [2021-10-06 21:36:49,671 INFO L226 Difference]: Without dead ends: 2854 [2021-10-06 21:36:49,672 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 489 ImplicationChecksByTransitivity, 8360.7ms TimeCoverageRelationStatistics Valid=535, Invalid=1627, Unknown=0, NotChecked=0, Total=2162 [2021-10-06 21:36:49,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2854 states. [2021-10-06 21:36:49,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2854 to 2340. [2021-10-06 21:36:49,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2340 states, 2339 states have (on average 3.528858486532706) internal successors, (8254), 2339 states have internal predecessors, (8254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:36:49,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2340 states to 2340 states and 8254 transitions. [2021-10-06 21:36:49,756 INFO L78 Accepts]: Start accepts. Automaton has 2340 states and 8254 transitions. Word has length 20 [2021-10-06 21:36:49,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:36:49,756 INFO L470 AbstractCegarLoop]: Abstraction has 2340 states and 8254 transitions. [2021-10-06 21:36:49,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.5) internal successors, (30), 20 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:36:49,756 INFO L276 IsEmpty]: Start isEmpty. Operand 2340 states and 8254 transitions. [2021-10-06 21:36:49,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-06 21:36:49,763 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:36:49,764 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:36:49,786 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (96)] Ended with exit code 0 [2021-10-06 21:36:49,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:36:49,979 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:36:49,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:36:49,979 INFO L82 PathProgramCache]: Analyzing trace with hash -1549084376, now seen corresponding path program 84 times [2021-10-06 21:36:49,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:36:49,980 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1125324958] [2021-10-06 21:36:49,980 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:36:49,980 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:36:49,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:36:49,982 INFO L229 MonitoredProcess]: Starting monitored process 97 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:36:49,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (97)] Waiting until timeout for monitored process [2021-10-06 21:36:50,944 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-06 21:36:50,944 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:36:50,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:36:50,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:36:51,227 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:36:51,227 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:36:52,292 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:36:52,292 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:36:52,292 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1125324958] [2021-10-06 21:36:52,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1125324958] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:36:52,293 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:36:52,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2021-10-06 21:36:52,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507437495] [2021-10-06 21:36:52,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-06 21:36:52,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:36:52,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-06 21:36:52,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2021-10-06 21:36:52,295 INFO L87 Difference]: Start difference. First operand 2340 states and 8254 transitions. Second operand has 22 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 22 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) [2021-10-06 21:37:27,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:37:27,896 INFO L93 Difference]: Finished difference Result 3360 states and 11000 transitions. [2021-10-06 21:37:27,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2021-10-06 21:37:27,898 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 22 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-06 21:37:27,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:37:27,905 INFO L225 Difference]: With dead ends: 3360 [2021-10-06 21:37:27,905 INFO L226 Difference]: Without dead ends: 3344 [2021-10-06 21:37:27,906 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3063 ImplicationChecksByTransitivity, 30291.8ms TimeCoverageRelationStatistics Valid=1611, Invalid=7701, Unknown=0, NotChecked=0, Total=9312 [2021-10-06 21:37:27,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3344 states. [2021-10-06 21:37:27,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3344 to 2722. [2021-10-06 21:37:27,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2722 states, 2721 states have (on average 3.579933847850055) internal successors, (9741), 2721 states have internal predecessors, (9741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:37:27,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2722 states to 2722 states and 9741 transitions. [2021-10-06 21:37:27,975 INFO L78 Accepts]: Start accepts. Automaton has 2722 states and 9741 transitions. Word has length 20 [2021-10-06 21:37:27,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:37:27,975 INFO L470 AbstractCegarLoop]: Abstraction has 2722 states and 9741 transitions. [2021-10-06 21:37:27,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 22 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) [2021-10-06 21:37:27,976 INFO L276 IsEmpty]: Start isEmpty. Operand 2722 states and 9741 transitions. [2021-10-06 21:37:27,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-06 21:37:27,980 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:37:27,980 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:37:27,994 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (97)] Forceful destruction successful, exit code 0 [2021-10-06 21:37:28,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:37:28,181 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:37:28,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:37:28,182 INFO L82 PathProgramCache]: Analyzing trace with hash 1948967800, now seen corresponding path program 85 times [2021-10-06 21:37:28,183 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:37:28,183 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2076971576] [2021-10-06 21:37:28,183 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:37:28,184 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:37:28,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:37:28,185 INFO L229 MonitoredProcess]: Starting monitored process 98 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:37:28,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (98)] Waiting until timeout for monitored process [2021-10-06 21:37:29,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:37:29,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:37:29,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:37:29,365 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:37:29,366 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:37:30,038 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:37:30,038 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:37:30,038 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2076971576] [2021-10-06 21:37:30,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2076971576] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:37:30,038 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:37:30,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-10-06 21:37:30,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229606593] [2021-10-06 21:37:30,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:37:30,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:37:30,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:37:30,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:37:30,040 INFO L87 Difference]: Start difference. First operand 2722 states and 9741 transitions. Second operand has 20 states, 20 states have (on average 1.5) internal successors, (30), 20 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:37:34,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:37:34,084 INFO L93 Difference]: Finished difference Result 3076 states and 11017 transitions. [2021-10-06 21:37:34,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-06 21:37:34,085 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.5) internal successors, (30), 20 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-06 21:37:34,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:37:34,092 INFO L225 Difference]: With dead ends: 3076 [2021-10-06 21:37:34,092 INFO L226 Difference]: Without dead ends: 3072 [2021-10-06 21:37:34,092 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 3182.0ms TimeCoverageRelationStatistics Valid=433, Invalid=1207, Unknown=0, NotChecked=0, Total=1640 [2021-10-06 21:37:34,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3072 states. [2021-10-06 21:37:34,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3072 to 2836. [2021-10-06 21:37:34,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2836 states, 2835 states have (on average 3.6063492063492064) internal successors, (10224), 2835 states have internal predecessors, (10224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:37:34,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2836 states to 2836 states and 10224 transitions. [2021-10-06 21:37:34,178 INFO L78 Accepts]: Start accepts. Automaton has 2836 states and 10224 transitions. Word has length 20 [2021-10-06 21:37:34,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:37:34,178 INFO L470 AbstractCegarLoop]: Abstraction has 2836 states and 10224 transitions. [2021-10-06 21:37:34,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.5) internal successors, (30), 20 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:37:34,178 INFO L276 IsEmpty]: Start isEmpty. Operand 2836 states and 10224 transitions. [2021-10-06 21:37:34,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-06 21:37:34,186 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:37:34,186 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:37:34,206 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (98)] Forceful destruction successful, exit code 0 [2021-10-06 21:37:34,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 98 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:37:34,401 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:37:34,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:37:34,401 INFO L82 PathProgramCache]: Analyzing trace with hash 1661865734, now seen corresponding path program 86 times [2021-10-06 21:37:34,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:37:34,402 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [577124866] [2021-10-06 21:37:34,402 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:37:34,402 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:37:34,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:37:34,404 INFO L229 MonitoredProcess]: Starting monitored process 99 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:37:34,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (99)] Waiting until timeout for monitored process [2021-10-06 21:37:35,298 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:37:35,298 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:37:35,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:37:35,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:37:35,570 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:37:35,570 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:37:36,359 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:37:36,359 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:37:36,360 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [577124866] [2021-10-06 21:37:36,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [577124866] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:37:36,360 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:37:36,360 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2021-10-06 21:37:36,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92071392] [2021-10-06 21:37:36,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-06 21:37:36,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:37:36,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-06 21:37:36,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462 [2021-10-06 21:37:36,362 INFO L87 Difference]: Start difference. First operand 2836 states and 10224 transitions. Second operand has 22 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 22 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) [2021-10-06 21:37:48,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:37:48,812 INFO L93 Difference]: Finished difference Result 3262 states and 11156 transitions. [2021-10-06 21:37:48,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-10-06 21:37:48,813 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 22 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-06 21:37:48,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:37:48,821 INFO L225 Difference]: With dead ends: 3262 [2021-10-06 21:37:48,821 INFO L226 Difference]: Without dead ends: 3262 [2021-10-06 21:37:48,821 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 673 ImplicationChecksByTransitivity, 10118.7ms TimeCoverageRelationStatistics Valid=609, Invalid=2253, Unknown=0, NotChecked=0, Total=2862 [2021-10-06 21:37:48,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3262 states. [2021-10-06 21:37:48,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3262 to 2884. [2021-10-06 21:37:48,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2884 states, 2883 states have (on average 3.6115157821713493) internal successors, (10412), 2883 states have internal predecessors, (10412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:37:48,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2884 states to 2884 states and 10412 transitions. [2021-10-06 21:37:48,885 INFO L78 Accepts]: Start accepts. Automaton has 2884 states and 10412 transitions. Word has length 20 [2021-10-06 21:37:48,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:37:48,886 INFO L470 AbstractCegarLoop]: Abstraction has 2884 states and 10412 transitions. [2021-10-06 21:37:48,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 22 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) [2021-10-06 21:37:48,886 INFO L276 IsEmpty]: Start isEmpty. Operand 2884 states and 10412 transitions. [2021-10-06 21:37:48,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-06 21:37:48,891 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:37:48,891 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:37:48,905 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (99)] Ended with exit code 0 [2021-10-06 21:37:49,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 99 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:37:49,092 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:37:49,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:37:49,093 INFO L82 PathProgramCache]: Analyzing trace with hash 1986799160, now seen corresponding path program 87 times [2021-10-06 21:37:49,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:37:49,093 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1492043184] [2021-10-06 21:37:49,093 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:37:49,094 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:37:49,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:37:49,095 INFO L229 MonitoredProcess]: Starting monitored process 100 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:37:49,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (100)] Waiting until timeout for monitored process [2021-10-06 21:37:50,122 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-06 21:37:50,122 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:37:50,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-06 21:37:50,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:37:50,233 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:37:50,233 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:37:50,751 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:37:50,752 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:37:50,752 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1492043184] [2021-10-06 21:37:50,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1492043184] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:37:50,752 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:37:50,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9] total 13 [2021-10-06 21:37:50,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50704924] [2021-10-06 21:37:50,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-06 21:37:50,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:37:50,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-06 21:37:50,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:37:50,753 INFO L87 Difference]: Start difference. First operand 2884 states and 10412 transitions. Second operand has 15 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:37:50,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:37:50,930 INFO L93 Difference]: Finished difference Result 3615 states and 12942 transitions. [2021-10-06 21:37:50,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:37:50,931 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-06 21:37:50,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:37:50,940 INFO L225 Difference]: With dead ends: 3615 [2021-10-06 21:37:50,940 INFO L226 Difference]: Without dead ends: 3584 [2021-10-06 21:37:50,940 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 290.2ms TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2021-10-06 21:37:50,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3584 states. [2021-10-06 21:37:51,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3584 to 3396. [2021-10-06 21:37:51,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3396 states, 3395 states have (on average 3.6379970544919) internal successors, (12351), 3395 states have internal predecessors, (12351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:37:51,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3396 states to 3396 states and 12351 transitions. [2021-10-06 21:37:51,034 INFO L78 Accepts]: Start accepts. Automaton has 3396 states and 12351 transitions. Word has length 21 [2021-10-06 21:37:51,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:37:51,034 INFO L470 AbstractCegarLoop]: Abstraction has 3396 states and 12351 transitions. [2021-10-06 21:37:51,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:37:51,035 INFO L276 IsEmpty]: Start isEmpty. Operand 3396 states and 12351 transitions. [2021-10-06 21:37:51,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-06 21:37:51,044 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:37:51,044 INFO L512 BasicCegarLoop]: trace histogram [5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:37:51,062 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (100)] Forceful destruction successful, exit code 0 [2021-10-06 21:37:51,258 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 100 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:37:51,258 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:37:51,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:37:51,259 INFO L82 PathProgramCache]: Analyzing trace with hash -553223617, now seen corresponding path program 88 times [2021-10-06 21:37:51,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:37:51,260 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [856362963] [2021-10-06 21:37:51,260 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:37:51,260 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:37:51,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:37:51,261 INFO L229 MonitoredProcess]: Starting monitored process 101 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:37:51,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (101)] Waiting until timeout for monitored process [2021-10-06 21:37:52,216 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:37:52,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:37:52,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:37:52,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:37:52,455 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:37:52,455 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:37:53,035 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:37:53,035 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:37:53,035 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [856362963] [2021-10-06 21:37:53,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [856362963] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:37:53,035 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:37:53,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2021-10-06 21:37:53,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717113725] [2021-10-06 21:37:53,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-06 21:37:53,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:37:53,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-06 21:37:53,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=356, Unknown=0, NotChecked=0, Total=462 [2021-10-06 21:37:53,036 INFO L87 Difference]: Start difference. First operand 3396 states and 12351 transitions. Second operand has 22 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:37:59,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:37:59,034 INFO L93 Difference]: Finished difference Result 3976 states and 13707 transitions. [2021-10-06 21:37:59,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-10-06 21:37:59,036 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-06 21:37:59,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:37:59,045 INFO L225 Difference]: With dead ends: 3976 [2021-10-06 21:37:59,045 INFO L226 Difference]: Without dead ends: 3940 [2021-10-06 21:37:59,046 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1103 ImplicationChecksByTransitivity, 5407.1ms TimeCoverageRelationStatistics Valid=926, Invalid=3496, Unknown=0, NotChecked=0, Total=4422 [2021-10-06 21:37:59,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3940 states. [2021-10-06 21:37:59,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3940 to 3414. [2021-10-06 21:37:59,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3414 states, 3413 states have (on average 3.6319953120421915) internal successors, (12396), 3413 states have internal predecessors, (12396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:37:59,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3414 states to 3414 states and 12396 transitions. [2021-10-06 21:37:59,130 INFO L78 Accepts]: Start accepts. Automaton has 3414 states and 12396 transitions. Word has length 21 [2021-10-06 21:37:59,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:37:59,130 INFO L470 AbstractCegarLoop]: Abstraction has 3414 states and 12396 transitions. [2021-10-06 21:37:59,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:37:59,131 INFO L276 IsEmpty]: Start isEmpty. Operand 3414 states and 12396 transitions. [2021-10-06 21:37:59,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-06 21:37:59,137 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:37:59,137 INFO L512 BasicCegarLoop]: trace histogram [5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:37:59,149 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (101)] Ended with exit code 0 [2021-10-06 21:37:59,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:37:59,340 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:37:59,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:37:59,340 INFO L82 PathProgramCache]: Analyzing trace with hash 1057717341, now seen corresponding path program 89 times [2021-10-06 21:37:59,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:37:59,341 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1430255636] [2021-10-06 21:37:59,341 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:37:59,341 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:37:59,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:37:59,343 INFO L229 MonitoredProcess]: Starting monitored process 102 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:37:59,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (102)] Waiting until timeout for monitored process [2021-10-06 21:38:00,356 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-06 21:38:00,356 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:38:00,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:38:00,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:38:00,590 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:38:00,590 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:38:01,451 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:38:01,451 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:38:01,451 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1430255636] [2021-10-06 21:38:01,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1430255636] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:38:01,452 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:38:01,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 23 [2021-10-06 21:38:01,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219642171] [2021-10-06 21:38:01,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-06 21:38:01,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:38:01,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-06 21:38:01,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2021-10-06 21:38:01,453 INFO L87 Difference]: Start difference. First operand 3414 states and 12396 transitions. Second operand has 23 states, 23 states have (on average 1.565217391304348) internal successors, (36), 23 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:38:15,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:38:15,199 INFO L93 Difference]: Finished difference Result 5428 states and 18130 transitions. [2021-10-06 21:38:15,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2021-10-06 21:38:15,200 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.565217391304348) internal successors, (36), 23 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-06 21:38:15,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:38:15,213 INFO L225 Difference]: With dead ends: 5428 [2021-10-06 21:38:15,213 INFO L226 Difference]: Without dead ends: 5428 [2021-10-06 21:38:15,213 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2437 ImplicationChecksByTransitivity, 12324.1ms TimeCoverageRelationStatistics Valid=1500, Invalid=6872, Unknown=0, NotChecked=0, Total=8372 [2021-10-06 21:38:15,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5428 states. [2021-10-06 21:38:15,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5428 to 3438. [2021-10-06 21:38:15,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3438 states, 3437 states have (on average 3.6334012219959266) internal successors, (12488), 3437 states have internal predecessors, (12488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:38:15,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3438 states to 3438 states and 12488 transitions. [2021-10-06 21:38:15,332 INFO L78 Accepts]: Start accepts. Automaton has 3438 states and 12488 transitions. Word has length 21 [2021-10-06 21:38:15,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:38:15,333 INFO L470 AbstractCegarLoop]: Abstraction has 3438 states and 12488 transitions. [2021-10-06 21:38:15,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.565217391304348) internal successors, (36), 23 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:38:15,333 INFO L276 IsEmpty]: Start isEmpty. Operand 3438 states and 12488 transitions. [2021-10-06 21:38:15,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-06 21:38:15,342 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:38:15,342 INFO L512 BasicCegarLoop]: trace histogram [5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:38:15,360 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (102)] Forceful destruction successful, exit code 0 [2021-10-06 21:38:15,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:38:15,557 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:38:15,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:38:15,557 INFO L82 PathProgramCache]: Analyzing trace with hash 1802419839, now seen corresponding path program 90 times [2021-10-06 21:38:15,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:38:15,558 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [53658623] [2021-10-06 21:38:15,558 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:38:15,559 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:38:15,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:38:15,560 INFO L229 MonitoredProcess]: Starting monitored process 103 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:38:15,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (103)] Waiting until timeout for monitored process [2021-10-06 21:38:16,616 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-06 21:38:16,616 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:38:16,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:38:16,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:38:16,840 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:38:16,841 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:38:17,653 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:38:17,653 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:38:17,653 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [53658623] [2021-10-06 21:38:17,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [53658623] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:38:17,654 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:38:17,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 23 [2021-10-06 21:38:17,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127634588] [2021-10-06 21:38:17,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-06 21:38:17,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:38:17,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-06 21:38:17,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=395, Unknown=0, NotChecked=0, Total=506 [2021-10-06 21:38:17,655 INFO L87 Difference]: Start difference. First operand 3438 states and 12488 transitions. Second operand has 23 states, 23 states have (on average 1.565217391304348) internal successors, (36), 23 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:38:31,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:38:31,302 INFO L93 Difference]: Finished difference Result 5508 states and 18345 transitions. [2021-10-06 21:38:31,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2021-10-06 21:38:31,303 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.565217391304348) internal successors, (36), 23 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-06 21:38:31,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:38:31,313 INFO L225 Difference]: With dead ends: 5508 [2021-10-06 21:38:31,313 INFO L226 Difference]: Without dead ends: 5508 [2021-10-06 21:38:31,313 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2869 ImplicationChecksByTransitivity, 11638.4ms TimeCoverageRelationStatistics Valid=1680, Invalid=7826, Unknown=0, NotChecked=0, Total=9506 [2021-10-06 21:38:31,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5508 states. [2021-10-06 21:38:31,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5508 to 3470. [2021-10-06 21:38:31,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3470 states, 3469 states have (on average 3.636206399538772) internal successors, (12614), 3469 states have internal predecessors, (12614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:38:31,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3470 states to 3470 states and 12614 transitions. [2021-10-06 21:38:31,399 INFO L78 Accepts]: Start accepts. Automaton has 3470 states and 12614 transitions. Word has length 21 [2021-10-06 21:38:31,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:38:31,399 INFO L470 AbstractCegarLoop]: Abstraction has 3470 states and 12614 transitions. [2021-10-06 21:38:31,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.565217391304348) internal successors, (36), 23 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:38:31,399 INFO L276 IsEmpty]: Start isEmpty. Operand 3470 states and 12614 transitions. [2021-10-06 21:38:31,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-06 21:38:31,407 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:38:31,408 INFO L512 BasicCegarLoop]: trace histogram [5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:38:31,425 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (103)] Forceful destruction successful, exit code 0 [2021-10-06 21:38:31,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 103 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:38:31,622 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:38:31,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:38:31,622 INFO L82 PathProgramCache]: Analyzing trace with hash -966186221, now seen corresponding path program 91 times [2021-10-06 21:38:31,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:38:31,623 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [570833232] [2021-10-06 21:38:31,623 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:38:31,623 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:38:31,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:38:31,624 INFO L229 MonitoredProcess]: Starting monitored process 104 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:38:31,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (104)] Waiting until timeout for monitored process [2021-10-06 21:38:32,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:38:32,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:38:32,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:38:32,982 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:38:32,983 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:38:33,903 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:38:33,904 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:38:33,904 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [570833232] [2021-10-06 21:38:33,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [570833232] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:38:33,904 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:38:33,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2021-10-06 21:38:33,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793633637] [2021-10-06 21:38:33,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-06 21:38:33,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:38:33,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-06 21:38:33,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=420, Unknown=0, NotChecked=0, Total=552 [2021-10-06 21:38:33,905 INFO L87 Difference]: Start difference. First operand 3470 states and 12614 transitions. Second operand has 24 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 24 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:38:41,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:38:41,549 INFO L93 Difference]: Finished difference Result 3958 states and 13756 transitions. [2021-10-06 21:38:41,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-10-06 21:38:41,551 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 24 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-06 21:38:41,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:38:41,559 INFO L225 Difference]: With dead ends: 3958 [2021-10-06 21:38:41,559 INFO L226 Difference]: Without dead ends: 3950 [2021-10-06 21:38:41,559 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 693 ImplicationChecksByTransitivity, 6993.5ms TimeCoverageRelationStatistics Valid=826, Invalid=2596, Unknown=0, NotChecked=0, Total=3422 [2021-10-06 21:38:41,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3950 states. [2021-10-06 21:38:41,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3950 to 3510. [2021-10-06 21:38:41,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3510 states, 3509 states have (on average 3.639783414078085) internal successors, (12772), 3509 states have internal predecessors, (12772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:38:41,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3510 states to 3510 states and 12772 transitions. [2021-10-06 21:38:41,632 INFO L78 Accepts]: Start accepts. Automaton has 3510 states and 12772 transitions. Word has length 21 [2021-10-06 21:38:41,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:38:41,632 INFO L470 AbstractCegarLoop]: Abstraction has 3510 states and 12772 transitions. [2021-10-06 21:38:41,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 24 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:38:41,632 INFO L276 IsEmpty]: Start isEmpty. Operand 3510 states and 12772 transitions. [2021-10-06 21:38:41,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-06 21:38:41,640 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:38:41,640 INFO L512 BasicCegarLoop]: trace histogram [5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:38:41,659 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (104)] Forceful destruction successful, exit code 0 [2021-10-06 21:38:41,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 104 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:38:41,854 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:38:41,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:38:41,854 INFO L82 PathProgramCache]: Analyzing trace with hash -1835805985, now seen corresponding path program 92 times [2021-10-06 21:38:41,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:38:41,855 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1536417911] [2021-10-06 21:38:41,855 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:38:41,855 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:38:41,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:38:41,857 INFO L229 MonitoredProcess]: Starting monitored process 105 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:38:41,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (105)] Waiting until timeout for monitored process [2021-10-06 21:38:42,865 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:38:42,865 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:38:42,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:38:42,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:38:43,123 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:38:43,124 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:38:43,728 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:38:43,728 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:38:43,728 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1536417911] [2021-10-06 21:38:43,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1536417911] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:38:43,728 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:38:43,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2021-10-06 21:38:43,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652186713] [2021-10-06 21:38:43,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-06 21:38:43,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:38:43,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-06 21:38:43,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=360, Unknown=0, NotChecked=0, Total=462 [2021-10-06 21:38:43,730 INFO L87 Difference]: Start difference. First operand 3510 states and 12772 transitions. Second operand has 22 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 22 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:38:49,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:38:49,853 INFO L93 Difference]: Finished difference Result 4124 states and 14196 transitions. [2021-10-06 21:38:49,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-10-06 21:38:49,854 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 22 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-06 21:38:49,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:38:49,863 INFO L225 Difference]: With dead ends: 4124 [2021-10-06 21:38:49,863 INFO L226 Difference]: Without dead ends: 4076 [2021-10-06 21:38:49,863 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 876 ImplicationChecksByTransitivity, 5335.1ms TimeCoverageRelationStatistics Valid=913, Invalid=3119, Unknown=0, NotChecked=0, Total=4032 [2021-10-06 21:38:49,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4076 states. [2021-10-06 21:38:49,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4076 to 3492. [2021-10-06 21:38:49,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3492 states, 3491 states have (on average 3.634775136064165) internal successors, (12689), 3491 states have internal predecessors, (12689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:38:49,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3492 states to 3492 states and 12689 transitions. [2021-10-06 21:38:49,933 INFO L78 Accepts]: Start accepts. Automaton has 3492 states and 12689 transitions. Word has length 21 [2021-10-06 21:38:49,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:38:49,934 INFO L470 AbstractCegarLoop]: Abstraction has 3492 states and 12689 transitions. [2021-10-06 21:38:49,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 22 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:38:49,934 INFO L276 IsEmpty]: Start isEmpty. Operand 3492 states and 12689 transitions. [2021-10-06 21:38:49,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-06 21:38:49,941 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:38:49,941 INFO L512 BasicCegarLoop]: trace histogram [5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:38:49,957 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (105)] Forceful destruction successful, exit code 0 [2021-10-06 21:38:50,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 105 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:38:50,143 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:38:50,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:38:50,144 INFO L82 PathProgramCache]: Analyzing trace with hash 509671035, now seen corresponding path program 93 times [2021-10-06 21:38:50,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:38:50,144 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [143672563] [2021-10-06 21:38:50,145 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:38:50,145 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:38:50,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:38:50,146 INFO L229 MonitoredProcess]: Starting monitored process 106 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:38:50,147 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (106)] Waiting until timeout for monitored process [2021-10-06 21:38:51,163 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-06 21:38:51,164 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:38:51,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-06 21:38:51,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:38:51,479 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:38:51,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:38:52,590 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:38:52,590 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:38:52,590 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [143672563] [2021-10-06 21:38:52,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [143672563] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:38:52,591 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:38:52,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2021-10-06 21:38:52,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468250274] [2021-10-06 21:38:52,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-06 21:38:52,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:38:52,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-06 21:38:52,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=426, Unknown=0, NotChecked=0, Total=552 [2021-10-06 21:38:52,592 INFO L87 Difference]: Start difference. First operand 3492 states and 12689 transitions. Second operand has 24 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 24 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:39:07,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:39:07,278 INFO L93 Difference]: Finished difference Result 4016 states and 13834 transitions. [2021-10-06 21:39:07,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-10-06 21:39:07,280 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 24 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-06 21:39:07,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:39:07,300 INFO L225 Difference]: With dead ends: 4016 [2021-10-06 21:39:07,300 INFO L226 Difference]: Without dead ends: 4016 [2021-10-06 21:39:07,300 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1365 ImplicationChecksByTransitivity, 13602.7ms TimeCoverageRelationStatistics Valid=1165, Invalid=4687, Unknown=0, NotChecked=0, Total=5852 [2021-10-06 21:39:07,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4016 states. [2021-10-06 21:39:07,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4016 to 3520. [2021-10-06 21:39:07,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3520 states, 3519 states have (on average 3.6382495026996304) internal successors, (12803), 3519 states have internal predecessors, (12803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:39:07,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3520 states to 3520 states and 12803 transitions. [2021-10-06 21:39:07,384 INFO L78 Accepts]: Start accepts. Automaton has 3520 states and 12803 transitions. Word has length 21 [2021-10-06 21:39:07,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:39:07,384 INFO L470 AbstractCegarLoop]: Abstraction has 3520 states and 12803 transitions. [2021-10-06 21:39:07,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 24 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:39:07,384 INFO L276 IsEmpty]: Start isEmpty. Operand 3520 states and 12803 transitions. [2021-10-06 21:39:07,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-06 21:39:07,393 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:39:07,394 INFO L512 BasicCegarLoop]: trace histogram [5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:39:07,412 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (106)] Forceful destruction successful, exit code 0 [2021-10-06 21:39:07,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:39:07,608 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:39:07,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:39:07,609 INFO L82 PathProgramCache]: Analyzing trace with hash -2126300929, now seen corresponding path program 94 times [2021-10-06 21:39:07,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:39:07,609 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1160326442] [2021-10-06 21:39:07,610 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:39:07,610 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:39:07,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:39:07,611 INFO L229 MonitoredProcess]: Starting monitored process 107 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:39:07,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (107)] Waiting until timeout for monitored process [2021-10-06 21:39:08,544 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:39:08,544 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:39:08,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:39:08,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:39:08,791 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:39:08,791 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:39:09,442 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:39:09,442 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:39:09,442 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1160326442] [2021-10-06 21:39:09,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1160326442] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:39:09,443 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:39:09,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2021-10-06 21:39:09,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908861324] [2021-10-06 21:39:09,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-06 21:39:09,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:39:09,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-06 21:39:09,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=352, Unknown=0, NotChecked=0, Total=462 [2021-10-06 21:39:09,444 INFO L87 Difference]: Start difference. First operand 3520 states and 12803 transitions. Second operand has 22 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:39:15,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:39:15,890 INFO L93 Difference]: Finished difference Result 4158 states and 14150 transitions. [2021-10-06 21:39:15,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-10-06 21:39:15,891 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-06 21:39:15,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:39:15,901 INFO L225 Difference]: With dead ends: 4158 [2021-10-06 21:39:15,901 INFO L226 Difference]: Without dead ends: 4118 [2021-10-06 21:39:15,902 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 931 ImplicationChecksByTransitivity, 5510.9ms TimeCoverageRelationStatistics Valid=1003, Invalid=3157, Unknown=0, NotChecked=0, Total=4160 [2021-10-06 21:39:15,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4118 states. [2021-10-06 21:39:15,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4118 to 3540. [2021-10-06 21:39:15,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3540 states, 3539 states have (on average 3.6185363096920033) internal successors, (12806), 3539 states have internal predecessors, (12806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:39:15,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3540 states to 3540 states and 12806 transitions. [2021-10-06 21:39:15,969 INFO L78 Accepts]: Start accepts. Automaton has 3540 states and 12806 transitions. Word has length 21 [2021-10-06 21:39:15,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:39:15,969 INFO L470 AbstractCegarLoop]: Abstraction has 3540 states and 12806 transitions. [2021-10-06 21:39:15,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:39:15,969 INFO L276 IsEmpty]: Start isEmpty. Operand 3540 states and 12806 transitions. [2021-10-06 21:39:15,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-06 21:39:15,975 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:39:15,975 INFO L512 BasicCegarLoop]: trace histogram [5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:39:15,988 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (107)] Ended with exit code 0 [2021-10-06 21:39:16,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 107 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:39:16,176 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:39:16,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:39:16,177 INFO L82 PathProgramCache]: Analyzing trace with hash -1090766819, now seen corresponding path program 95 times [2021-10-06 21:39:16,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:39:16,178 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [344099004] [2021-10-06 21:39:16,178 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:39:16,178 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:39:16,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:39:16,179 INFO L229 MonitoredProcess]: Starting monitored process 108 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:39:16,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (108)] Waiting until timeout for monitored process [2021-10-06 21:39:17,231 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-06 21:39:17,231 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:39:17,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:39:17,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:39:17,459 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:39:17,459 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:39:18,358 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:39:18,359 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:39:18,359 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [344099004] [2021-10-06 21:39:18,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [344099004] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:39:18,359 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:39:18,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2021-10-06 21:39:18,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197576063] [2021-10-06 21:39:18,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-06 21:39:18,360 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:39:18,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-06 21:39:18,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2021-10-06 21:39:18,360 INFO L87 Difference]: Start difference. First operand 3540 states and 12806 transitions. Second operand has 22 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 22 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:39:32,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:39:32,056 INFO L93 Difference]: Finished difference Result 4618 states and 15245 transitions. [2021-10-06 21:39:32,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-10-06 21:39:32,057 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 22 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-06 21:39:32,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:39:32,067 INFO L225 Difference]: With dead ends: 4618 [2021-10-06 21:39:32,067 INFO L226 Difference]: Without dead ends: 4602 [2021-10-06 21:39:32,068 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 885 ImplicationChecksByTransitivity, 12074.4ms TimeCoverageRelationStatistics Valid=1022, Invalid=2760, Unknown=0, NotChecked=0, Total=3782 [2021-10-06 21:39:32,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4602 states. [2021-10-06 21:39:32,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4602 to 3638. [2021-10-06 21:39:32,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3638 states, 3637 states have (on average 3.6186417376959032) internal successors, (13161), 3637 states have internal predecessors, (13161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:39:32,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3638 states to 3638 states and 13161 transitions. [2021-10-06 21:39:32,187 INFO L78 Accepts]: Start accepts. Automaton has 3638 states and 13161 transitions. Word has length 21 [2021-10-06 21:39:32,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:39:32,187 INFO L470 AbstractCegarLoop]: Abstraction has 3638 states and 13161 transitions. [2021-10-06 21:39:32,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 22 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:39:32,188 INFO L276 IsEmpty]: Start isEmpty. Operand 3638 states and 13161 transitions. [2021-10-06 21:39:32,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-06 21:39:32,194 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:39:32,194 INFO L512 BasicCegarLoop]: trace histogram [5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:39:32,207 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (108)] Forceful destruction successful, exit code 0 [2021-10-06 21:39:32,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 108 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:39:32,395 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:39:32,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:39:32,396 INFO L82 PathProgramCache]: Analyzing trace with hash 1579375111, now seen corresponding path program 96 times [2021-10-06 21:39:32,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:39:32,396 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1857609050] [2021-10-06 21:39:32,397 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:39:32,397 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:39:32,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:39:32,398 INFO L229 MonitoredProcess]: Starting monitored process 109 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:39:32,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (109)] Waiting until timeout for monitored process [2021-10-06 21:39:33,383 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-10-06 21:39:33,384 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:39:33,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:39:33,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:39:33,661 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-06 21:39:33,661 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:39:34,323 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-06 21:39:34,323 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:39:34,323 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1857609050] [2021-10-06 21:39:34,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1857609050] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:39:34,323 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:39:34,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-10-06 21:39:34,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355035112] [2021-10-06 21:39:34,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:39:34,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:39:34,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:39:34,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:39:34,325 INFO L87 Difference]: Start difference. First operand 3638 states and 13161 transitions. Second operand has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:39:40,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:39:40,806 INFO L93 Difference]: Finished difference Result 4114 states and 14207 transitions. [2021-10-06 21:39:40,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-10-06 21:39:40,807 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-06 21:39:40,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:39:40,821 INFO L225 Difference]: With dead ends: 4114 [2021-10-06 21:39:40,821 INFO L226 Difference]: Without dead ends: 4102 [2021-10-06 21:39:40,822 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 716 ImplicationChecksByTransitivity, 5862.0ms TimeCoverageRelationStatistics Valid=774, Invalid=2648, Unknown=0, NotChecked=0, Total=3422 [2021-10-06 21:39:40,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4102 states. [2021-10-06 21:39:40,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4102 to 3592. [2021-10-06 21:39:40,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3592 states, 3591 states have (on average 3.61292119186856) internal successors, (12974), 3591 states have internal predecessors, (12974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:39:40,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3592 states to 3592 states and 12974 transitions. [2021-10-06 21:39:40,948 INFO L78 Accepts]: Start accepts. Automaton has 3592 states and 12974 transitions. Word has length 21 [2021-10-06 21:39:40,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:39:40,948 INFO L470 AbstractCegarLoop]: Abstraction has 3592 states and 12974 transitions. [2021-10-06 21:39:40,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:39:40,948 INFO L276 IsEmpty]: Start isEmpty. Operand 3592 states and 12974 transitions. [2021-10-06 21:39:40,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-06 21:39:40,956 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:39:40,956 INFO L512 BasicCegarLoop]: trace histogram [5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:39:40,973 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (109)] Ended with exit code 0 [2021-10-06 21:39:41,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 109 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:39:41,171 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:39:41,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:39:41,172 INFO L82 PathProgramCache]: Analyzing trace with hash -1045499103, now seen corresponding path program 97 times [2021-10-06 21:39:41,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:39:41,172 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [202864658] [2021-10-06 21:39:41,173 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:39:41,173 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:39:41,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:39:41,174 INFO L229 MonitoredProcess]: Starting monitored process 110 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:39:41,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (110)] Waiting until timeout for monitored process [2021-10-06 21:39:42,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:39:42,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:39:42,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:39:42,384 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:39:42,385 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:39:42,961 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:39:42,962 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:39:42,962 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [202864658] [2021-10-06 21:39:42,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [202864658] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:39:42,962 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:39:42,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2021-10-06 21:39:42,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269207187] [2021-10-06 21:39:42,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-06 21:39:42,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:39:42,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-06 21:39:42,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2021-10-06 21:39:42,963 INFO L87 Difference]: Start difference. First operand 3592 states and 12974 transitions. Second operand has 22 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:39:50,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:39:50,986 INFO L93 Difference]: Finished difference Result 4256 states and 14456 transitions. [2021-10-06 21:39:50,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-10-06 21:39:50,987 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-06 21:39:50,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:39:50,996 INFO L225 Difference]: With dead ends: 4256 [2021-10-06 21:39:50,996 INFO L226 Difference]: Without dead ends: 4180 [2021-10-06 21:39:50,997 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1488 ImplicationChecksByTransitivity, 7193.3ms TimeCoverageRelationStatistics Valid=1238, Invalid=4768, Unknown=0, NotChecked=0, Total=6006 [2021-10-06 21:39:51,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4180 states. [2021-10-06 21:39:51,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4180 to 3540. [2021-10-06 21:39:51,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3540 states, 3539 states have (on average 3.6072336818310258) internal successors, (12766), 3539 states have internal predecessors, (12766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:39:51,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3540 states to 3540 states and 12766 transitions. [2021-10-06 21:39:51,079 INFO L78 Accepts]: Start accepts. Automaton has 3540 states and 12766 transitions. Word has length 21 [2021-10-06 21:39:51,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:39:51,079 INFO L470 AbstractCegarLoop]: Abstraction has 3540 states and 12766 transitions. [2021-10-06 21:39:51,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:39:51,079 INFO L276 IsEmpty]: Start isEmpty. Operand 3540 states and 12766 transitions. [2021-10-06 21:39:51,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-06 21:39:51,085 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:39:51,085 INFO L512 BasicCegarLoop]: trace histogram [5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:39:51,099 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (110)] Forceful destruction successful, exit code 0 [2021-10-06 21:39:51,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:39:51,286 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:39:51,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:39:51,287 INFO L82 PathProgramCache]: Analyzing trace with hash 565441855, now seen corresponding path program 98 times [2021-10-06 21:39:51,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:39:51,288 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1977807682] [2021-10-06 21:39:51,288 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:39:51,288 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:39:51,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:39:51,290 INFO L229 MonitoredProcess]: Starting monitored process 111 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:39:51,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (111)] Waiting until timeout for monitored process [2021-10-06 21:39:52,394 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:39:52,395 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:39:52,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:39:52,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:39:52,661 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:39:52,661 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:39:53,573 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:39:53,573 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:39:53,573 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1977807682] [2021-10-06 21:39:53,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1977807682] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:39:53,573 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:39:53,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 23 [2021-10-06 21:39:53,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116203865] [2021-10-06 21:39:53,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-06 21:39:53,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:39:53,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-06 21:39:53,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=393, Unknown=0, NotChecked=0, Total=506 [2021-10-06 21:39:53,574 INFO L87 Difference]: Start difference. First operand 3540 states and 12766 transitions. Second operand has 23 states, 23 states have (on average 1.565217391304348) internal successors, (36), 23 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:40:05,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:40:05,089 INFO L93 Difference]: Finished difference Result 4040 states and 13906 transitions. [2021-10-06 21:40:05,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-10-06 21:40:05,091 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.565217391304348) internal successors, (36), 23 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-06 21:40:05,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:40:05,099 INFO L225 Difference]: With dead ends: 4040 [2021-10-06 21:40:05,099 INFO L226 Difference]: Without dead ends: 4036 [2021-10-06 21:40:05,100 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 815 ImplicationChecksByTransitivity, 9818.2ms TimeCoverageRelationStatistics Valid=996, Invalid=3426, Unknown=0, NotChecked=0, Total=4422 [2021-10-06 21:40:05,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4036 states. [2021-10-06 21:40:05,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4036 to 3624. [2021-10-06 21:40:05,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3624 states, 3623 states have (on average 3.6097157052166713) internal successors, (13078), 3623 states have internal predecessors, (13078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:40:05,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3624 states to 3624 states and 13078 transitions. [2021-10-06 21:40:05,171 INFO L78 Accepts]: Start accepts. Automaton has 3624 states and 13078 transitions. Word has length 21 [2021-10-06 21:40:05,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:40:05,172 INFO L470 AbstractCegarLoop]: Abstraction has 3624 states and 13078 transitions. [2021-10-06 21:40:05,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.565217391304348) internal successors, (36), 23 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:40:05,172 INFO L276 IsEmpty]: Start isEmpty. Operand 3624 states and 13078 transitions. [2021-10-06 21:40:05,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-06 21:40:05,178 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:40:05,178 INFO L512 BasicCegarLoop]: trace histogram [5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:40:05,192 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (111)] Forceful destruction successful, exit code 0 [2021-10-06 21:40:05,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 111 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:40:05,379 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:40:05,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:40:05,379 INFO L82 PathProgramCache]: Analyzing trace with hash 573569239, now seen corresponding path program 99 times [2021-10-06 21:40:05,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:40:05,380 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [352230006] [2021-10-06 21:40:05,380 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:40:05,381 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:40:05,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:40:05,382 INFO L229 MonitoredProcess]: Starting monitored process 112 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:40:05,383 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (112)] Waiting until timeout for monitored process [2021-10-06 21:40:06,461 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-06 21:40:06,462 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:40:06,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:40:06,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:40:06,759 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:40:06,759 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:40:07,755 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:40:07,756 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:40:07,756 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [352230006] [2021-10-06 21:40:07,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [352230006] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:40:07,756 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:40:07,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 23 [2021-10-06 21:40:07,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429911325] [2021-10-06 21:40:07,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-06 21:40:07,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:40:07,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-06 21:40:07,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=387, Unknown=0, NotChecked=0, Total=506 [2021-10-06 21:40:07,757 INFO L87 Difference]: Start difference. First operand 3624 states and 13078 transitions. Second operand has 23 states, 23 states have (on average 1.565217391304348) internal successors, (36), 23 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2021-10-06 21:40:12,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-06 21:40:12,789 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK [2021-10-06 21:40:12,804 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (112)] Forceful destruction successful, exit code 0 [2021-10-06 21:40:12,820 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (112)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-06 21:40:12,822 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 [2021-10-06 21:40:12,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:40:12,992 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (3624states) and FLOYD_HOARE automaton (currently 29 states, 23 states before enhancement),while ReachableStatesComputation was computing reachable states (390 states constructed, input type IntersectNwa). [2021-10-06 21:40:12,994 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-06 21:40:12,994 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-06 21:40:12,994 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-06 21:40:12,994 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-06 21:40:12,994 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-06 21:40:12,994 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-06 21:40:12,995 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-06 21:40:12,995 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-06 21:40:12,995 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK [2021-10-06 21:40:12,995 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-06 21:40:12,995 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-06 21:40:13,000 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-06 21:40:13,000 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-06 21:40:13,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.10 09:40:13 BasicIcfg [2021-10-06 21:40:13,002 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-06 21:40:13,003 INFO L168 Benchmark]: Toolchain (without parser) took 834046.83 ms. Allocated memory was 151.0 MB in the beginning and 262.1 MB in the end (delta: 111.1 MB). Free memory was 126.5 MB in the beginning and 150.5 MB in the end (delta: -24.0 MB). Peak memory consumption was 87.8 MB. Max. memory is 8.0 GB. [2021-10-06 21:40:13,004 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 122.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-06 21:40:13,004 INFO L168 Benchmark]: CACSL2BoogieTranslator took 366.51 ms. Allocated memory is still 151.0 MB. Free memory was 126.1 MB in the beginning and 115.6 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-10-06 21:40:13,004 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.03 ms. Allocated memory is still 151.0 MB. Free memory was 115.6 MB in the beginning and 114.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-06 21:40:13,005 INFO L168 Benchmark]: Boogie Preprocessor took 32.60 ms. Allocated memory is still 151.0 MB. Free memory was 114.0 MB in the beginning and 112.8 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-06 21:40:13,005 INFO L168 Benchmark]: RCFGBuilder took 600.31 ms. Allocated memory is still 151.0 MB. Free memory was 112.7 MB in the beginning and 132.3 MB in the end (delta: -19.6 MB). Peak memory consumption was 15.9 MB. Max. memory is 8.0 GB. [2021-10-06 21:40:13,006 INFO L168 Benchmark]: TraceAbstraction took 832984.24 ms. Allocated memory was 151.0 MB in the beginning and 262.1 MB in the end (delta: 111.1 MB). Free memory was 131.7 MB in the beginning and 150.5 MB in the end (delta: -18.7 MB). Peak memory consumption was 94.0 MB. Max. memory is 8.0 GB. [2021-10-06 21:40:13,008 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 122.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 366.51 ms. Allocated memory is still 151.0 MB. Free memory was 126.1 MB in the beginning and 115.6 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 45.03 ms. Allocated memory is still 151.0 MB. Free memory was 115.6 MB in the beginning and 114.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 32.60 ms. Allocated memory is still 151.0 MB. Free memory was 114.0 MB in the beginning and 112.8 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 600.31 ms. Allocated memory is still 151.0 MB. Free memory was 112.7 MB in the beginning and 132.3 MB in the end (delta: -19.6 MB). Peak memory consumption was 15.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 832984.24 ms. Allocated memory was 151.0 MB in the beginning and 262.1 MB in the end (delta: 111.1 MB). Free memory was 131.7 MB in the beginning and 150.5 MB in the end (delta: -18.7 MB). Peak memory consumption was 94.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6339.6ms, 79 PlacesBefore, 32 PlacesAfterwards, 77 TransitionsBefore, 27 TransitionsAfterwards, 576 CoEnabledTransitionPairs, 5 FixpointIterations, 43 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 3 ChoiceCompositions, 75 TotalNumberOfCompositions, 649 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 626, positive: 622, positive conditional: 0, positive unconditional: 622, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 352, positive: 348, positive conditional: 0, positive unconditional: 348, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 352, positive: 348, positive conditional: 0, positive unconditional: 348, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 4, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 30, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 30, negative conditional: 0, negative unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 626, positive: 274, positive conditional: 0, positive unconditional: 274, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 352, unknown conditional: 0, unknown unconditional: 352] , Statistics on independence cache: Total cache size (in pairs): 32, Positive cache size: 32, Positive conditional cache size: 0, Positive unconditional cache size: 32, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - 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: 69]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while BasicCegarLoop was constructing difference of abstraction (3624states) and FLOYD_HOARE automaton (currently 29 states, 23 states before enhancement),while ReachableStatesComputation was computing reachable states (390 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 63]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (3624states) and FLOYD_HOARE automaton (currently 29 states, 23 states before enhancement),while ReachableStatesComputation was computing reachable states (390 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 63]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (3624states) and FLOYD_HOARE automaton (currently 29 states, 23 states before enhancement),while ReachableStatesComputation was computing reachable states (390 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 64]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (3624states) and FLOYD_HOARE automaton (currently 29 states, 23 states before enhancement),while ReachableStatesComputation was computing reachable states (390 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 64]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (3624states) and FLOYD_HOARE automaton (currently 29 states, 23 states before enhancement),while ReachableStatesComputation was computing reachable states (390 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 65]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (3624states) and FLOYD_HOARE automaton (currently 29 states, 23 states before enhancement),while ReachableStatesComputation was computing reachable states (390 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 65]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (3624states) and FLOYD_HOARE automaton (currently 29 states, 23 states before enhancement),while ReachableStatesComputation was computing reachable states (390 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 66]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (3624states) and FLOYD_HOARE automaton (currently 29 states, 23 states before enhancement),while ReachableStatesComputation was computing reachable states (390 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 66]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (3624states) and FLOYD_HOARE automaton (currently 29 states, 23 states before enhancement),while ReachableStatesComputation was computing reachable states (390 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 57]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while BasicCegarLoop was constructing difference of abstraction (3624states) and FLOYD_HOARE automaton (currently 29 states, 23 states before enhancement),while ReachableStatesComputation was computing reachable states (390 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 64]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (3624states) and FLOYD_HOARE automaton (currently 29 states, 23 states before enhancement),while ReachableStatesComputation was computing reachable states (390 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 63]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (3624states) and FLOYD_HOARE automaton (currently 29 states, 23 states before enhancement),while ReachableStatesComputation was computing reachable states (390 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 91 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 832858.4ms, OverallIterations: 111, TraceHistogramMax: 5, EmptinessCheckTime: 347.4ms, AutomataDifference: 650493.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 6398.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 4476 SDtfs, 16175 SDslu, 34259 SDs, 0 SdLazy, 38685 SolverSat, 5712 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 123565.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6993 GetRequests, 2546 SyntacticMatches, 0 SemanticMatches, 4447 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49944 ImplicationChecksByTransitivity, 572935.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=3638occurred in iteration=107, InterpolantAutomatonStates: 3759, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 3444.7ms AutomataMinimizationTime, 110 MinimizatonAttempts, 30762 StatesRemovedByMinimization, 104 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 726.5ms SsaConstructionTime, 9712.7ms SatisfiabilityAnalysisTime, 93121.4ms InterpolantComputationTime, 2017 NumberOfCodeBlocks, 2017 NumberOfCodeBlocksAsserted, 262 NumberOfCheckSat, 3812 ConstructedInterpolants, 4 QuantifiedInterpolants, 25346 SizeOfPredicates, 327 NumberOfNonLiveVariables, 8796 ConjunctsInSsa, 1256 ConjunctsInUnsatCore, 222 InterpolantComputations, 18 PerfectInterpolantSequences, 334/2728 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