/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/bench-exp2x4.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-07 15:20:57,260 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-07 15:20:57,263 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-07 15:20:57,298 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-07 15:20:57,312 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-07 15:20:57,329 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-07 15:20:57,331 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-07 15:20:57,333 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-07 15:20:57,334 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-07 15:20:57,336 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-07 15:20:57,338 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-07 15:20:57,341 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-07 15:20:57,343 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-07 15:20:57,345 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-07 15:20:57,346 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-07 15:20:57,348 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-07 15:20:57,351 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-10-07 15:20:57,356 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-07 15:20:57,357 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-07 15:20:57,358 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-07 15:20:57,359 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-07 15:20:57,361 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-07 15:20:57,361 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-07 15:20:57,362 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-07 15:20:57,363 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-07 15:20:57,363 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-07 15:20:57,364 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-07 15:20:57,365 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-07 15:20:57,366 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-07 15:20:57,399 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-07 15:20:57,400 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-07 15:20:57,400 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-07 15:20:57,401 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-07 15:20:57,402 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-07 15:20:57,403 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-07 15:20:57,403 INFO L138 SettingsManager]: * Use SBE=true [2021-10-07 15:20:57,403 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-07 15:20:57,403 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-07 15:20:57,404 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-07 15:20:57,404 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-07 15:20:57,404 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-07 15:20:57,404 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-07 15:20:57,405 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-07 15:20:57,405 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-07 15:20:57,405 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-07 15:20:57,405 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-07 15:20:57,406 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-07 15:20:57,406 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-07 15:20:57,406 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-07 15:20:57,406 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-07 15:20:57,407 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-07 15:20:57,407 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-07 15:20:57,407 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-07 15:20:57,407 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-07 15:20:57,408 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-07 15:20:57,408 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-07 15:20:57,408 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-07 15:20:57,408 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-07 15:20:57,409 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-07 15:20:57,409 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-07 15:20:57,409 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-07 15:20:57,409 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-07 15:20:57,841 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-07 15:20:57,869 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-07 15:20:57,872 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-07 15:20:57,874 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-07 15:20:57,874 INFO L275 PluginConnector]: CDTParser initialized [2021-10-07 15:20:57,875 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/bench-exp2x4.wvr.c [2021-10-07 15:20:57,955 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b21bd22e3/2bd69a367c0b45708c94480d56382c6b/FLAG033c5c1c9 [2021-10-07 15:20:58,570 INFO L306 CDTParser]: Found 1 translation units. [2021-10-07 15:20:58,571 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/bench-exp2x4.wvr.c [2021-10-07 15:20:58,580 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b21bd22e3/2bd69a367c0b45708c94480d56382c6b/FLAG033c5c1c9 [2021-10-07 15:20:58,941 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b21bd22e3/2bd69a367c0b45708c94480d56382c6b [2021-10-07 15:20:58,945 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-07 15:20:58,959 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-07 15:20:58,962 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-07 15:20:58,962 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-07 15:20:58,966 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-07 15:20:58,967 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:20:58" (1/1) ... [2021-10-07 15:20:58,970 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a46b3dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:20:58, skipping insertion in model container [2021-10-07 15:20:58,970 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:20:58" (1/1) ... [2021-10-07 15:20:58,979 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-07 15:20:59,010 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-07 15:20:59,308 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/bench-exp2x4.wvr.c[2303,2316] [2021-10-07 15:20:59,317 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 15:20:59,339 INFO L203 MainTranslator]: Completed pre-run [2021-10-07 15:20:59,396 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/bench-exp2x4.wvr.c[2303,2316] [2021-10-07 15:20:59,402 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 15:20:59,424 INFO L208 MainTranslator]: Completed translation [2021-10-07 15:20:59,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:20:59 WrapperNode [2021-10-07 15:20:59,429 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-07 15:20:59,430 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-07 15:20:59,431 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-07 15:20:59,431 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-07 15:20:59,443 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:20:59" (1/1) ... [2021-10-07 15:20:59,470 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:20:59" (1/1) ... [2021-10-07 15:20:59,515 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-07 15:20:59,516 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-07 15:20:59,516 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-07 15:20:59,516 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-07 15:20:59,527 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:20:59" (1/1) ... [2021-10-07 15:20:59,527 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:20:59" (1/1) ... [2021-10-07 15:20:59,538 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:20:59" (1/1) ... [2021-10-07 15:20:59,539 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:20:59" (1/1) ... [2021-10-07 15:20:59,563 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:20:59" (1/1) ... [2021-10-07 15:20:59,572 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:20:59" (1/1) ... [2021-10-07 15:20:59,574 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:20:59" (1/1) ... [2021-10-07 15:20:59,583 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-07 15:20:59,585 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-07 15:20:59,585 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-07 15:20:59,585 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-07 15:20:59,589 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:20:59" (1/1) ... [2021-10-07 15:20:59,599 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-07 15:20:59,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:20:59,631 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-07 15:20:59,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-07 15:20:59,715 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-07 15:20:59,716 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-07 15:20:59,716 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-07 15:20:59,716 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-07 15:20:59,716 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-07 15:20:59,717 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-07 15:20:59,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-07 15:20:59,717 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-10-07 15:20:59,717 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-10-07 15:20:59,718 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-07 15:20:59,718 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-07 15:20:59,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-07 15:20:59,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-07 15:20:59,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-07 15:20:59,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-07 15:20:59,721 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-07 15:21:00,322 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-07 15:21:00,324 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-10-07 15:21:00,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:21:00 BoogieIcfgContainer [2021-10-07 15:21:00,331 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-07 15:21:00,333 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-07 15:21:00,333 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-07 15:21:00,339 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-07 15:21:00,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 03:20:58" (1/3) ... [2021-10-07 15:21:00,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@568563db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:21:00, skipping insertion in model container [2021-10-07 15:21:00,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:20:59" (2/3) ... [2021-10-07 15:21:00,341 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@568563db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:21:00, skipping insertion in model container [2021-10-07 15:21:00,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:21:00" (3/3) ... [2021-10-07 15:21:00,343 INFO L111 eAbstractionObserver]: Analyzing ICFG bench-exp2x4.wvr.c [2021-10-07 15:21:00,349 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-07 15:21:00,350 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2021-10-07 15:21:00,350 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-07 15:21:00,396 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,399 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,399 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,400 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,400 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,401 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,401 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,402 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,402 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,403 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,406 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,406 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,407 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,407 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,407 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,407 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,411 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,412 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,421 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,422 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,428 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,429 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,433 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,434 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,445 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-10-07 15:21:00,500 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-07 15:21:00,509 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-07 15:21:00,509 INFO L340 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2021-10-07 15:21:00,528 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-07 15:21:00,540 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 144 places, 141 transitions, 314 flow [2021-10-07 15:21:00,544 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 144 places, 141 transitions, 314 flow [2021-10-07 15:21:00,546 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 144 places, 141 transitions, 314 flow [2021-10-07 15:21:00,611 INFO L129 PetriNetUnfolder]: 10/137 cut-off events. [2021-10-07 15:21:00,611 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-10-07 15:21:00,617 INFO L84 FinitePrefix]: Finished finitePrefix Result has 154 conditions, 137 events. 10/137 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 107 event pairs, 0 based on Foata normal form. 0/109 useless extension candidates. Maximal degree in co-relation 91. Up to 2 conditions per place. [2021-10-07 15:21:00,622 INFO L116 LiptonReduction]: Number of co-enabled transitions 1960 [2021-10-07 15:21:20,242 INFO L131 LiptonReduction]: Checked pairs total: 2465 [2021-10-07 15:21:20,242 INFO L133 LiptonReduction]: Total number of compositions: 136 [2021-10-07 15:21:20,251 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 56 places, 47 transitions, 126 flow [2021-10-07 15:21:20,279 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 183 states, 165 states have (on average 4.212121212121212) internal successors, (695), 182 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:21:20,283 INFO L276 IsEmpty]: Start isEmpty. Operand has 183 states, 165 states have (on average 4.212121212121212) internal successors, (695), 182 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:21:20,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2021-10-07 15:21:20,289 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:21:20,289 INFO L512 BasicCegarLoop]: trace histogram [1] [2021-10-07 15:21:20,291 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:21:20,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:21:20,300 INFO L82 PathProgramCache]: Analyzing trace with hash 520, now seen corresponding path program 1 times [2021-10-07 15:21:20,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:21:20,314 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [152972166] [2021-10-07 15:21:20,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:21:20,315 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:21:20,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:21:20,319 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:21:20,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-07 15:21:20,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:21:20,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-07 15:21:20,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:21:20,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:20,397 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:21:20,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:20,398 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:21:20,399 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [152972166] [2021-10-07 15:21:20,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [152972166] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:21:20,400 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:21:20,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0, 0] imperfect sequences [] total 0 [2021-10-07 15:21:20,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214437386] [2021-10-07 15:21:20,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-07 15:21:20,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:21:20,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-07 15:21:20,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-07 15:21:20,429 INFO L87 Difference]: Start difference. First operand has 183 states, 165 states have (on average 4.212121212121212) internal successors, (695), 182 states have internal predecessors, (695), 0 states have call successors, (0), 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) [2021-10-07 15:21:20,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:21:20,476 INFO L93 Difference]: Finished difference Result 180 states and 692 transitions. [2021-10-07 15:21:20,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-07 15:21:20,479 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 [2021-10-07 15:21:20,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:21:20,501 INFO L225 Difference]: With dead ends: 180 [2021-10-07 15:21:20,502 INFO L226 Difference]: Without dead ends: 180 [2021-10-07 15:21:20,503 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 [2021-10-07 15:21:20,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2021-10-07 15:21:20,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2021-10-07 15:21:20,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 165 states have (on average 4.193939393939394) internal successors, (692), 179 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:21:20,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 692 transitions. [2021-10-07 15:21:20,576 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 692 transitions. Word has length 1 [2021-10-07 15:21:20,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:21:20,576 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 692 transitions. [2021-10-07 15:21:20,577 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) [2021-10-07 15:21:20,577 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 692 transitions. [2021-10-07 15:21:20,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-07 15:21:20,577 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:21:20,577 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-07 15:21:20,589 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-07 15:21:20,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:21:20,787 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:21:20,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:21:20,789 INFO L82 PathProgramCache]: Analyzing trace with hash 511969, now seen corresponding path program 1 times [2021-10-07 15:21:20,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:21:20,790 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1027408376] [2021-10-07 15:21:20,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:21:20,791 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:21:20,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:21:20,792 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:21:20,822 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-07 15:21:20,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:21:20,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-07 15:21:20,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:21:21,098 INFO L354 Elim1Store]: treesize reduction 84, result has 22.9 percent of original size [2021-10-07 15:21:21,100 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 45 [2021-10-07 15:21:21,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:21,295 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:21:21,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:21,315 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:21:21,315 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1027408376] [2021-10-07 15:21:21,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1027408376] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:21:21,316 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:21:21,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 15:21:21,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6946712] [2021-10-07 15:21:21,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:21:21,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:21:21,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:21:21,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:21:21,320 INFO L87 Difference]: Start difference. First operand 180 states and 692 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) [2021-10-07 15:21:21,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:21:21,408 INFO L93 Difference]: Finished difference Result 170 states and 656 transitions. [2021-10-07 15:21:21,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:21:21,410 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 [2021-10-07 15:21:21,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:21:21,413 INFO L225 Difference]: With dead ends: 170 [2021-10-07 15:21:21,413 INFO L226 Difference]: Without dead ends: 170 [2021-10-07 15:21:21,415 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 41.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:21:21,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-10-07 15:21:21,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2021-10-07 15:21:21,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 157 states have (on average 4.178343949044586) internal successors, (656), 169 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:21:21,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 656 transitions. [2021-10-07 15:21:21,434 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 656 transitions. Word has length 3 [2021-10-07 15:21:21,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:21:21,436 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 656 transitions. [2021-10-07 15:21:21,436 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) [2021-10-07 15:21:21,436 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 656 transitions. [2021-10-07 15:21:21,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-07 15:21:21,437 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:21:21,437 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-07 15:21:21,453 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-07 15:21:21,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:21:21,649 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:21:21,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:21:21,650 INFO L82 PathProgramCache]: Analyzing trace with hash 511970, now seen corresponding path program 1 times [2021-10-07 15:21:21,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:21:21,655 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [729563921] [2021-10-07 15:21:21,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:21:21,655 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:21:21,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:21:21,658 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:21:21,698 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-07 15:21:21,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:21:21,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 15:21:21,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:21:22,003 INFO L354 Elim1Store]: treesize reduction 231, result has 19.2 percent of original size [2021-10-07 15:21:22,004 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 75 [2021-10-07 15:21:22,015 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 77 treesize of output 75 [2021-10-07 15:21:22,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:22,269 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:21:22,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:22,325 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:21:22,325 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [729563921] [2021-10-07 15:21:22,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [729563921] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:21:22,325 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:21:22,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 15:21:22,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605483904] [2021-10-07 15:21:22,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:21:22,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:21:22,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:21:22,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:21:22,328 INFO L87 Difference]: Start difference. First operand 170 states and 656 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) [2021-10-07 15:21:22,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:21:22,443 INFO L93 Difference]: Finished difference Result 160 states and 620 transitions. [2021-10-07 15:21:22,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:21:22,445 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 [2021-10-07 15:21:22,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:21:22,448 INFO L225 Difference]: With dead ends: 160 [2021-10-07 15:21:22,448 INFO L226 Difference]: Without dead ends: 160 [2021-10-07 15:21:22,448 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 63.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:21:22,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-10-07 15:21:22,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2021-10-07 15:21:22,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 149 states have (on average 4.1610738255033555) internal successors, (620), 159 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:21:22,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 620 transitions. [2021-10-07 15:21:22,464 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 620 transitions. Word has length 3 [2021-10-07 15:21:22,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:21:22,465 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 620 transitions. [2021-10-07 15:21:22,465 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) [2021-10-07 15:21:22,465 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 620 transitions. [2021-10-07 15:21:22,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-07 15:21:22,466 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:21:22,466 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-07 15:21:22,489 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-07 15:21:22,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:21:22,681 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:21:22,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:21:22,683 INFO L82 PathProgramCache]: Analyzing trace with hash 492012408, now seen corresponding path program 1 times [2021-10-07 15:21:22,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:21:22,683 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [358277178] [2021-10-07 15:21:22,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:21:22,684 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:21:22,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:21:22,686 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:21:22,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-07 15:21:22,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:21:22,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-07 15:21:22,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:21:22,831 INFO L354 Elim1Store]: treesize reduction 84, result has 22.9 percent of original size [2021-10-07 15:21:22,832 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 47 [2021-10-07 15:21:23,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:23,223 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:21:23,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:23,245 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:21:23,245 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [358277178] [2021-10-07 15:21:23,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [358277178] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:21:23,246 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:21:23,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 15:21:23,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800806444] [2021-10-07 15:21:23,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:21:23,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:21:23,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:21:23,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:21:23,248 INFO L87 Difference]: Start difference. First operand 160 states and 620 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:21:23,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:21:23,309 INFO L93 Difference]: Finished difference Result 152 states and 596 transitions. [2021-10-07 15:21:23,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:21:23,310 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-07 15:21:23,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:21:23,313 INFO L225 Difference]: With dead ends: 152 [2021-10-07 15:21:23,313 INFO L226 Difference]: Without dead ends: 152 [2021-10-07 15:21:23,313 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:21:23,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-10-07 15:21:23,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2021-10-07 15:21:23,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 143 states have (on average 4.1678321678321675) internal successors, (596), 151 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:21:23,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 596 transitions. [2021-10-07 15:21:23,325 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 596 transitions. Word has length 5 [2021-10-07 15:21:23,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:21:23,325 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 596 transitions. [2021-10-07 15:21:23,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:21:23,326 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 596 transitions. [2021-10-07 15:21:23,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-07 15:21:23,326 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:21:23,327 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-07 15:21:23,342 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-07 15:21:23,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:21:23,539 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:21:23,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:21:23,541 INFO L82 PathProgramCache]: Analyzing trace with hash 492012410, now seen corresponding path program 1 times [2021-10-07 15:21:23,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:21:23,542 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1205387715] [2021-10-07 15:21:23,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:21:23,543 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:21:23,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:21:23,544 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:21:23,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-07 15:21:23,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:21:23,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 15:21:23,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:21:23,905 INFO L354 Elim1Store]: treesize reduction 231, result has 19.2 percent of original size [2021-10-07 15:21:23,906 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 38 treesize of output 76 [2021-10-07 15:21:23,913 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 77 [2021-10-07 15:21:24,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:24,410 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:21:24,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:24,491 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:21:24,491 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1205387715] [2021-10-07 15:21:24,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1205387715] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:21:24,492 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:21:24,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 15:21:24,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260767120] [2021-10-07 15:21:24,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:21:24,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:21:24,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:21:24,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:21:24,494 INFO L87 Difference]: Start difference. First operand 152 states and 596 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:21:24,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:21:24,554 INFO L93 Difference]: Finished difference Result 144 states and 572 transitions. [2021-10-07 15:21:24,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:21:24,556 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-07 15:21:24,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:21:24,558 INFO L225 Difference]: With dead ends: 144 [2021-10-07 15:21:24,558 INFO L226 Difference]: Without dead ends: 144 [2021-10-07 15:21:24,559 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 44.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:21:24,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-10-07 15:21:24,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2021-10-07 15:21:24,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 137 states have (on average 4.175182481751825) internal successors, (572), 143 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:21:24,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 572 transitions. [2021-10-07 15:21:24,568 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 572 transitions. Word has length 5 [2021-10-07 15:21:24,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:21:24,569 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 572 transitions. [2021-10-07 15:21:24,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:21:24,569 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 572 transitions. [2021-10-07 15:21:24,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-07 15:21:24,570 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:21:24,570 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:21:24,586 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-07 15:21:24,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:21:24,783 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:21:24,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:21:24,784 INFO L82 PathProgramCache]: Analyzing trace with hash 377533841, now seen corresponding path program 1 times [2021-10-07 15:21:24,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:21:24,784 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [381627560] [2021-10-07 15:21:24,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:21:24,785 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:21:24,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:21:24,786 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:21:24,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-07 15:21:24,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:21:24,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-07 15:21:24,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:21:25,096 INFO L354 Elim1Store]: treesize reduction 231, result has 19.2 percent of original size [2021-10-07 15:21:25,097 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 60 [2021-10-07 15:21:25,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:25,208 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:21:25,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:25,306 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:21:25,306 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [381627560] [2021-10-07 15:21:25,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [381627560] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:21:25,306 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:21:25,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 15:21:25,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496015512] [2021-10-07 15:21:25,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:21:25,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:21:25,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:21:25,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:21:25,308 INFO L87 Difference]: Start difference. First operand 144 states and 572 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:21:25,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:21:25,352 INFO L93 Difference]: Finished difference Result 134 states and 536 transitions. [2021-10-07 15:21:25,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:21:25,353 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-07 15:21:25,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:21:25,355 INFO L225 Difference]: With dead ends: 134 [2021-10-07 15:21:25,355 INFO L226 Difference]: Without dead ends: 134 [2021-10-07 15:21:25,356 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:21:25,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-10-07 15:21:25,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2021-10-07 15:21:25,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 129 states have (on average 4.155038759689923) internal successors, (536), 133 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:21:25,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 536 transitions. [2021-10-07 15:21:25,364 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 536 transitions. Word has length 7 [2021-10-07 15:21:25,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:21:25,365 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 536 transitions. [2021-10-07 15:21:25,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:21:25,365 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 536 transitions. [2021-10-07 15:21:25,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-07 15:21:25,366 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:21:25,366 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:21:25,385 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-07 15:21:25,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:21:25,583 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:21:25,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:21:25,584 INFO L82 PathProgramCache]: Analyzing trace with hash 377533843, now seen corresponding path program 1 times [2021-10-07 15:21:25,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:21:25,585 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1161786847] [2021-10-07 15:21:25,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:21:25,585 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:21:25,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:21:25,587 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:21:25,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-07 15:21:25,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:21:25,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-07 15:21:25,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:21:25,719 INFO L354 Elim1Store]: treesize reduction 84, result has 22.9 percent of original size [2021-10-07 15:21:25,720 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 30 [2021-10-07 15:21:25,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:25,764 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:21:25,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:25,784 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:21:25,784 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1161786847] [2021-10-07 15:21:25,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1161786847] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:21:25,785 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:21:25,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-07 15:21:25,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247245] [2021-10-07 15:21:25,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 15:21:25,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:21:25,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 15:21:25,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:21:25,787 INFO L87 Difference]: Start difference. First operand 134 states and 536 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:21:25,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:21:25,815 INFO L93 Difference]: Finished difference Result 124 states and 500 transitions. [2021-10-07 15:21:25,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:21:25,816 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-07 15:21:25,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:21:25,818 INFO L225 Difference]: With dead ends: 124 [2021-10-07 15:21:25,818 INFO L226 Difference]: Without dead ends: 124 [2021-10-07 15:21:25,818 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:21:25,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-10-07 15:21:25,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2021-10-07 15:21:25,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 121 states have (on average 4.132231404958677) internal successors, (500), 123 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:21:25,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 500 transitions. [2021-10-07 15:21:25,827 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 500 transitions. Word has length 7 [2021-10-07 15:21:25,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:21:25,827 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 500 transitions. [2021-10-07 15:21:25,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:21:25,827 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 500 transitions. [2021-10-07 15:21:25,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-07 15:21:25,828 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:21:25,829 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:21:25,843 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-07 15:21:26,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:21:26,041 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:21:26,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:21:26,042 INFO L82 PathProgramCache]: Analyzing trace with hash 2032780505, now seen corresponding path program 1 times [2021-10-07 15:21:26,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:21:26,044 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [367752047] [2021-10-07 15:21:26,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:21:26,044 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:21:26,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:21:26,046 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:21:26,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-07 15:21:26,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:21:26,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-07 15:21:26,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:21:26,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:26,249 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:21:26,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:26,352 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:21:26,352 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [367752047] [2021-10-07 15:21:26,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [367752047] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:21:26,353 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:21:26,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-07 15:21:26,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926249127] [2021-10-07 15:21:26,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 15:21:26,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:21:26,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 15:21:26,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:21:26,354 INFO L87 Difference]: Start difference. First operand 124 states and 500 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:21:26,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:21:26,391 INFO L93 Difference]: Finished difference Result 108 states and 420 transitions. [2021-10-07 15:21:26,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:21:26,392 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-07 15:21:26,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:21:26,394 INFO L225 Difference]: With dead ends: 108 [2021-10-07 15:21:26,394 INFO L226 Difference]: Without dead ends: 108 [2021-10-07 15:21:26,395 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:21:26,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-10-07 15:21:26,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2021-10-07 15:21:26,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 106 states have (on average 3.9622641509433962) internal successors, (420), 107 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:21:26,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 420 transitions. [2021-10-07 15:21:26,401 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 420 transitions. Word has length 9 [2021-10-07 15:21:26,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:21:26,401 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 420 transitions. [2021-10-07 15:21:26,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:21:26,401 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 420 transitions. [2021-10-07 15:21:26,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-07 15:21:26,402 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:21:26,402 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:21:26,415 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-07 15:21:26,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:21:26,617 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:21:26,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:21:26,618 INFO L82 PathProgramCache]: Analyzing trace with hash 2032780506, now seen corresponding path program 1 times [2021-10-07 15:21:26,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:21:26,619 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [138914013] [2021-10-07 15:21:26,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:21:26,620 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:21:26,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:21:26,623 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:21:26,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-07 15:21:26,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:21:26,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 15:21:26,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:21:26,810 INFO L354 Elim1Store]: treesize reduction 84, result has 22.9 percent of original size [2021-10-07 15:21:26,810 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 27 treesize of output 39 [2021-10-07 15:21:27,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:27,029 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:21:27,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:27,096 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:21:27,096 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [138914013] [2021-10-07 15:21:27,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [138914013] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:21:27,097 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:21:27,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-10-07 15:21:27,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676180239] [2021-10-07 15:21:27,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-07 15:21:27,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:21:27,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-07 15:21:27,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-07 15:21:27,099 INFO L87 Difference]: Start difference. First operand 108 states and 420 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:21:27,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:21:27,152 INFO L93 Difference]: Finished difference Result 92 states and 340 transitions. [2021-10-07 15:21:27,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:21:27,161 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-07 15:21:27,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:21:27,162 INFO L225 Difference]: With dead ends: 92 [2021-10-07 15:21:27,162 INFO L226 Difference]: Without dead ends: 92 [2021-10-07 15:21:27,163 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 67.4ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-07 15:21:27,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-10-07 15:21:27,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2021-10-07 15:21:27,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 3.7362637362637363) internal successors, (340), 91 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:21:27,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 340 transitions. [2021-10-07 15:21:27,168 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 340 transitions. Word has length 9 [2021-10-07 15:21:27,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:21:27,169 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 340 transitions. [2021-10-07 15:21:27,169 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:21:27,169 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 340 transitions. [2021-10-07 15:21:27,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-07 15:21:27,171 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:21:27,171 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:21:27,187 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-07 15:21:27,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:21:27,386 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:21:27,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:21:27,386 INFO L82 PathProgramCache]: Analyzing trace with hash 2012931474, now seen corresponding path program 1 times [2021-10-07 15:21:27,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:21:27,387 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [304157258] [2021-10-07 15:21:27,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:21:27,388 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:21:27,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:21:27,390 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:21:27,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-07 15:21:27,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:21:27,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-07 15:21:27,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:21:27,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:27,826 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:21:27,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:27,992 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:21:27,992 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [304157258] [2021-10-07 15:21:27,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [304157258] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:21:27,993 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:21:27,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 15:21:27,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052988654] [2021-10-07 15:21:27,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:21:27,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:21:27,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:21:27,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:21:27,994 INFO L87 Difference]: Start difference. First operand 92 states and 340 transitions. Second operand has 4 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:21:28,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:21:28,028 INFO L93 Difference]: Finished difference Result 181 states and 677 transitions. [2021-10-07 15:21:28,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:21:28,029 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 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 [2021-10-07 15:21:28,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:21:28,031 INFO L225 Difference]: With dead ends: 181 [2021-10-07 15:21:28,031 INFO L226 Difference]: Without dead ends: 172 [2021-10-07 15:21:28,032 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:21:28,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2021-10-07 15:21:28,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2021-10-07 15:21:28,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 171 states have (on average 3.7953216374269005) internal successors, (649), 171 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:21:28,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 649 transitions. [2021-10-07 15:21:28,041 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 649 transitions. Word has length 21 [2021-10-07 15:21:28,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:21:28,042 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 649 transitions. [2021-10-07 15:21:28,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:21:28,042 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 649 transitions. [2021-10-07 15:21:28,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-07 15:21:28,045 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:21:28,045 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:21:28,059 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-07 15:21:28,258 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:21:28,259 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:21:28,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:21:28,260 INFO L82 PathProgramCache]: Analyzing trace with hash -522763958, now seen corresponding path program 1 times [2021-10-07 15:21:28,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:21:28,261 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [410654270] [2021-10-07 15:21:28,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:21:28,261 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:21:28,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:21:28,263 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:21:28,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-07 15:21:28,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:21:28,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-07 15:21:28,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:21:28,560 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:28,560 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:21:28,708 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:28,708 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:21:28,708 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [410654270] [2021-10-07 15:21:28,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [410654270] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:21:28,709 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:21:28,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-10-07 15:21:28,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710811922] [2021-10-07 15:21:28,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 15:21:28,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:21:28,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 15:21:28,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-07 15:21:28,712 INFO L87 Difference]: Start difference. First operand 172 states and 649 transitions. Second operand has 8 states, 8 states have (on average 3.75) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:21:29,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:21:29,066 INFO L93 Difference]: Finished difference Result 602 states and 2219 transitions. [2021-10-07 15:21:29,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-07 15:21:29,067 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 7 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 22 [2021-10-07 15:21:29,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:21:29,073 INFO L225 Difference]: With dead ends: 602 [2021-10-07 15:21:29,073 INFO L226 Difference]: Without dead ends: 602 [2021-10-07 15:21:29,074 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 147.1ms TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-10-07 15:21:29,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2021-10-07 15:21:29,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 260. [2021-10-07 15:21:29,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 259 states have (on average 4.308880308880309) internal successors, (1116), 259 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:21:29,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 1116 transitions. [2021-10-07 15:21:29,093 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 1116 transitions. Word has length 22 [2021-10-07 15:21:29,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:21:29,093 INFO L470 AbstractCegarLoop]: Abstraction has 260 states and 1116 transitions. [2021-10-07 15:21:29,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:21:29,093 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 1116 transitions. [2021-10-07 15:21:29,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-07 15:21:29,095 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:21:29,096 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:21:29,110 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-07 15:21:29,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:21:29,310 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:21:29,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:21:29,311 INFO L82 PathProgramCache]: Analyzing trace with hash -2023593266, now seen corresponding path program 1 times [2021-10-07 15:21:29,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:21:29,312 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1529158460] [2021-10-07 15:21:29,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:21:29,313 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:21:29,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:21:29,315 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:21:29,317 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-07 15:21:29,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:21:29,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-07 15:21:29,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:21:29,612 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:29,612 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:21:29,702 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:29,702 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:21:29,702 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1529158460] [2021-10-07 15:21:29,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1529158460] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:21:29,702 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:21:29,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-07 15:21:29,703 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986363472] [2021-10-07 15:21:29,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-07 15:21:29,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:21:29,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-07 15:21:29,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-07 15:21:29,705 INFO L87 Difference]: Start difference. First operand 260 states and 1116 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:21:29,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:21:29,903 INFO L93 Difference]: Finished difference Result 466 states and 1906 transitions. [2021-10-07 15:21:29,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-07 15:21:29,904 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-07 15:21:29,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:21:29,909 INFO L225 Difference]: With dead ends: 466 [2021-10-07 15:21:29,909 INFO L226 Difference]: Without dead ends: 450 [2021-10-07 15:21:29,910 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 46.6ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-07 15:21:29,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2021-10-07 15:21:29,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 350. [2021-10-07 15:21:29,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 349 states have (on average 4.432664756446991) internal successors, (1547), 349 states have internal predecessors, (1547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:21:29,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 1547 transitions. [2021-10-07 15:21:29,929 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 1547 transitions. Word has length 22 [2021-10-07 15:21:29,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:21:29,929 INFO L470 AbstractCegarLoop]: Abstraction has 350 states and 1547 transitions. [2021-10-07 15:21:29,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:21:29,930 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 1547 transitions. [2021-10-07 15:21:29,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-07 15:21:29,932 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:21:29,932 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:21:29,947 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-07 15:21:30,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:21:30,145 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:21:30,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:21:30,146 INFO L82 PathProgramCache]: Analyzing trace with hash 1348611576, now seen corresponding path program 1 times [2021-10-07 15:21:30,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:21:30,147 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1932363664] [2021-10-07 15:21:30,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:21:30,148 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:21:30,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:21:30,148 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:21:30,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-07 15:21:30,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:21:30,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-07 15:21:30,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:21:30,526 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:30,526 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:21:30,716 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:30,716 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:21:30,716 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1932363664] [2021-10-07 15:21:30,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1932363664] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:21:30,717 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:21:30,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-10-07 15:21:30,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080491787] [2021-10-07 15:21:30,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 15:21:30,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:21:30,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 15:21:30,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-07 15:21:30,719 INFO L87 Difference]: Start difference. First operand 350 states and 1547 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:21:31,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:21:31,064 INFO L93 Difference]: Finished difference Result 836 states and 3675 transitions. [2021-10-07 15:21:31,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-07 15:21:31,065 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-07 15:21:31,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:21:31,075 INFO L225 Difference]: With dead ends: 836 [2021-10-07 15:21:31,075 INFO L226 Difference]: Without dead ends: 836 [2021-10-07 15:21:31,075 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 154.0ms TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-10-07 15:21:31,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2021-10-07 15:21:31,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 512. [2021-10-07 15:21:31,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 512 states, 511 states have (on average 4.843444227005871) internal successors, (2475), 511 states have internal predecessors, (2475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:21:31,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 2475 transitions. [2021-10-07 15:21:31,129 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 2475 transitions. Word has length 22 [2021-10-07 15:21:31,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:21:31,129 INFO L470 AbstractCegarLoop]: Abstraction has 512 states and 2475 transitions. [2021-10-07 15:21:31,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:21:31,129 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 2475 transitions. [2021-10-07 15:21:31,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-07 15:21:31,132 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:21:31,133 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:21:31,150 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-07 15:21:31,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:21:31,347 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:21:31,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:21:31,347 INFO L82 PathProgramCache]: Analyzing trace with hash 424238018, now seen corresponding path program 2 times [2021-10-07 15:21:31,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:21:31,348 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [527152393] [2021-10-07 15:21:31,348 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:21:31,351 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:21:31,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:21:31,352 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:21:31,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-07 15:21:31,545 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:21:31,545 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:21:31,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-07 15:21:31,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:21:31,717 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:31,717 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:21:31,808 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:31,808 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:21:31,808 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [527152393] [2021-10-07 15:21:31,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [527152393] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:21:31,809 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:21:31,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2021-10-07 15:21:31,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172151191] [2021-10-07 15:21:31,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-07 15:21:31,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:21:31,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-07 15:21:31,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-07 15:21:31,811 INFO L87 Difference]: Start difference. First operand 512 states and 2475 transitions. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:21:31,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:21:31,966 INFO L93 Difference]: Finished difference Result 626 states and 2978 transitions. [2021-10-07 15:21:31,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 15:21:31,967 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-07 15:21:31,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:21:31,973 INFO L225 Difference]: With dead ends: 626 [2021-10-07 15:21:31,973 INFO L226 Difference]: Without dead ends: 626 [2021-10-07 15:21:31,973 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 42.6ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-07 15:21:31,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2021-10-07 15:21:31,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 568. [2021-10-07 15:21:32,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 567 states have (on average 4.837742504409171) internal successors, (2743), 567 states have internal predecessors, (2743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:21:32,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 2743 transitions. [2021-10-07 15:21:32,007 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 2743 transitions. Word has length 22 [2021-10-07 15:21:32,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:21:32,007 INFO L470 AbstractCegarLoop]: Abstraction has 568 states and 2743 transitions. [2021-10-07 15:21:32,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:21:32,008 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 2743 transitions. [2021-10-07 15:21:32,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-07 15:21:32,011 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:21:32,011 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:21:32,031 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-07 15:21:32,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:21:32,225 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:21:32,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:21:32,226 INFO L82 PathProgramCache]: Analyzing trace with hash -1843557643, now seen corresponding path program 1 times [2021-10-07 15:21:32,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:21:32,227 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [922753628] [2021-10-07 15:21:32,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:21:32,227 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:21:32,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:21:32,229 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:21:32,230 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-07 15:21:32,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:21:32,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-07 15:21:32,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:21:32,501 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:32,501 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:21:32,562 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:32,562 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:21:32,562 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [922753628] [2021-10-07 15:21:32,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [922753628] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:21:32,563 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:21:32,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-07 15:21:32,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014156688] [2021-10-07 15:21:32,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-07 15:21:32,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:21:32,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-07 15:21:32,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-07 15:21:32,564 INFO L87 Difference]: Start difference. First operand 568 states and 2743 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:21:32,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:21:32,756 INFO L93 Difference]: Finished difference Result 886 states and 3791 transitions. [2021-10-07 15:21:32,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-07 15:21:32,757 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 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 22 [2021-10-07 15:21:32,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:21:32,767 INFO L225 Difference]: With dead ends: 886 [2021-10-07 15:21:32,767 INFO L226 Difference]: Without dead ends: 864 [2021-10-07 15:21:32,769 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 44.3ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-07 15:21:32,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 864 states. [2021-10-07 15:21:32,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 864 to 638. [2021-10-07 15:21:32,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 637 states have (on average 4.6970172684458396) internal successors, (2992), 637 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:21:32,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 2992 transitions. [2021-10-07 15:21:32,806 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 2992 transitions. Word has length 22 [2021-10-07 15:21:32,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:21:32,807 INFO L470 AbstractCegarLoop]: Abstraction has 638 states and 2992 transitions. [2021-10-07 15:21:32,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:21:32,808 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 2992 transitions. [2021-10-07 15:21:32,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-07 15:21:32,811 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:21:32,811 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:21:32,827 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-07 15:21:33,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:21:33,025 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:21:33,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:21:33,025 INFO L82 PathProgramCache]: Analyzing trace with hash -2112988665, now seen corresponding path program 2 times [2021-10-07 15:21:33,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:21:33,026 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1237668080] [2021-10-07 15:21:33,026 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:21:33,027 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:21:33,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:21:33,028 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:21:33,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-07 15:21:33,274 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:21:33,274 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:21:33,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-07 15:21:33,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:21:33,426 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:33,426 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:21:33,576 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:33,577 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:21:33,577 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1237668080] [2021-10-07 15:21:33,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1237668080] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:21:33,577 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:21:33,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-10-07 15:21:33,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254468845] [2021-10-07 15:21:33,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 15:21:33,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:21:33,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 15:21:33,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-07 15:21:33,579 INFO L87 Difference]: Start difference. First operand 638 states and 2992 transitions. Second operand has 8 states, 8 states have (on average 3.75) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:21:33,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:21:33,990 INFO L93 Difference]: Finished difference Result 1628 states and 6984 transitions. [2021-10-07 15:21:33,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-07 15:21:33,991 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 7 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 22 [2021-10-07 15:21:33,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:21:34,008 INFO L225 Difference]: With dead ends: 1628 [2021-10-07 15:21:34,008 INFO L226 Difference]: Without dead ends: 1628 [2021-10-07 15:21:34,009 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 153.8ms TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-10-07 15:21:34,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1628 states. [2021-10-07 15:21:34,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1628 to 838. [2021-10-07 15:21:34,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 838 states, 837 states have (on average 4.9127837514934285) internal successors, (4112), 837 states have internal predecessors, (4112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:21:34,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 838 states to 838 states and 4112 transitions. [2021-10-07 15:21:34,064 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 4112 transitions. Word has length 22 [2021-10-07 15:21:34,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:21:34,065 INFO L470 AbstractCegarLoop]: Abstraction has 838 states and 4112 transitions. [2021-10-07 15:21:34,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:21:34,065 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 4112 transitions. [2021-10-07 15:21:34,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-07 15:21:34,069 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:21:34,070 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:21:34,085 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-07 15:21:34,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:21:34,284 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:21:34,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:21:34,284 INFO L82 PathProgramCache]: Analyzing trace with hash 1154262589, now seen corresponding path program 1 times [2021-10-07 15:21:34,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:21:34,285 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1856329635] [2021-10-07 15:21:34,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:21:34,286 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:21:34,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:21:34,288 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:21:34,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-07 15:21:34,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:21:34,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:21:34,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:21:35,037 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:35,037 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:21:35,280 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:35,280 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:21:35,280 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1856329635] [2021-10-07 15:21:35,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1856329635] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:21:35,281 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:21:35,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-07 15:21:35,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834319539] [2021-10-07 15:21:35,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 15:21:35,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:21:35,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 15:21:35,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-07 15:21:35,283 INFO L87 Difference]: Start difference. First operand 838 states and 4112 transitions. Second operand has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:21:35,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:21:35,532 INFO L93 Difference]: Finished difference Result 1132 states and 5091 transitions. [2021-10-07 15:21:35,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-07 15:21:35,532 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 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 23 [2021-10-07 15:21:35,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:21:35,545 INFO L225 Difference]: With dead ends: 1132 [2021-10-07 15:21:35,545 INFO L226 Difference]: Without dead ends: 1082 [2021-10-07 15:21:35,546 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 110.9ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-07 15:21:35,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1082 states. [2021-10-07 15:21:35,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1082 to 932. [2021-10-07 15:21:35,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 932 states, 931 states have (on average 4.868958109559613) internal successors, (4533), 931 states have internal predecessors, (4533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:21:35,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 932 states to 932 states and 4533 transitions. [2021-10-07 15:21:35,596 INFO L78 Accepts]: Start accepts. Automaton has 932 states and 4533 transitions. Word has length 23 [2021-10-07 15:21:35,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:21:35,596 INFO L470 AbstractCegarLoop]: Abstraction has 932 states and 4533 transitions. [2021-10-07 15:21:35,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:21:35,597 INFO L276 IsEmpty]: Start isEmpty. Operand 932 states and 4533 transitions. [2021-10-07 15:21:35,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-07 15:21:35,606 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:21:35,606 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:21:35,621 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-07 15:21:35,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:21:35,820 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:21:35,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:21:35,821 INFO L82 PathProgramCache]: Analyzing trace with hash -1142673624, now seen corresponding path program 1 times [2021-10-07 15:21:35,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:21:35,823 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [741529857] [2021-10-07 15:21:35,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:21:35,823 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:21:35,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:21:35,825 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:21:35,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-07 15:21:36,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:21:36,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:21:36,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:21:36,470 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:36,471 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:21:36,733 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:36,733 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:21:36,733 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [741529857] [2021-10-07 15:21:36,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [741529857] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:21:36,734 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:21:36,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-07 15:21:36,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268037961] [2021-10-07 15:21:36,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 15:21:36,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:21:36,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 15:21:36,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-07 15:21:36,736 INFO L87 Difference]: Start difference. First operand 932 states and 4533 transitions. Second operand has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:21:37,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:21:37,052 INFO L93 Difference]: Finished difference Result 1172 states and 5319 transitions. [2021-10-07 15:21:37,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-07 15:21:37,053 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 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 23 [2021-10-07 15:21:37,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:21:37,067 INFO L225 Difference]: With dead ends: 1172 [2021-10-07 15:21:37,067 INFO L226 Difference]: Without dead ends: 1142 [2021-10-07 15:21:37,068 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 129.1ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-07 15:21:37,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1142 states. [2021-10-07 15:21:37,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1142 to 1036. [2021-10-07 15:21:37,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1036 states, 1035 states have (on average 4.786473429951691) internal successors, (4954), 1035 states have internal predecessors, (4954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:21:37,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1036 states to 1036 states and 4954 transitions. [2021-10-07 15:21:37,127 INFO L78 Accepts]: Start accepts. Automaton has 1036 states and 4954 transitions. Word has length 23 [2021-10-07 15:21:37,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:21:37,127 INFO L470 AbstractCegarLoop]: Abstraction has 1036 states and 4954 transitions. [2021-10-07 15:21:37,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:21:37,127 INFO L276 IsEmpty]: Start isEmpty. Operand 1036 states and 4954 transitions. [2021-10-07 15:21:37,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-07 15:21:37,133 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:21:37,133 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:21:37,147 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-07 15:21:37,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:21:37,347 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:21:37,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:21:37,348 INFO L82 PathProgramCache]: Analyzing trace with hash -795704876, now seen corresponding path program 2 times [2021-10-07 15:21:37,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:21:37,349 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1898145593] [2021-10-07 15:21:37,350 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:21:37,350 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:21:37,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:21:37,351 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:21:37,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-07 15:21:37,626 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:21:37,626 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:21:37,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:21:37,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:21:38,093 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:38,093 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:21:38,349 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:38,350 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:21:38,350 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1898145593] [2021-10-07 15:21:38,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1898145593] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:21:38,350 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:21:38,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-07 15:21:38,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917071688] [2021-10-07 15:21:38,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 15:21:38,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:21:38,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 15:21:38,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-07 15:21:38,352 INFO L87 Difference]: Start difference. First operand 1036 states and 4954 transitions. Second operand has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:21:38,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:21:38,631 INFO L93 Difference]: Finished difference Result 1248 states and 5710 transitions. [2021-10-07 15:21:38,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-07 15:21:38,632 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 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 23 [2021-10-07 15:21:38,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:21:38,646 INFO L225 Difference]: With dead ends: 1248 [2021-10-07 15:21:38,646 INFO L226 Difference]: Without dead ends: 1218 [2021-10-07 15:21:38,647 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 98.7ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-07 15:21:38,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1218 states. [2021-10-07 15:21:38,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1218 to 1106. [2021-10-07 15:21:38,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1106 states, 1105 states have (on average 4.769230769230769) internal successors, (5270), 1105 states have internal predecessors, (5270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:21:38,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1106 states to 1106 states and 5270 transitions. [2021-10-07 15:21:38,703 INFO L78 Accepts]: Start accepts. Automaton has 1106 states and 5270 transitions. Word has length 23 [2021-10-07 15:21:38,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:21:38,704 INFO L470 AbstractCegarLoop]: Abstraction has 1106 states and 5270 transitions. [2021-10-07 15:21:38,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:21:38,704 INFO L276 IsEmpty]: Start isEmpty. Operand 1106 states and 5270 transitions. [2021-10-07 15:21:38,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-07 15:21:38,710 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:21:38,711 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:21:38,725 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-07 15:21:38,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:21:38,924 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:21:38,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:21:38,925 INFO L82 PathProgramCache]: Analyzing trace with hash -1003497093, now seen corresponding path program 2 times [2021-10-07 15:21:38,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:21:38,926 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2083539751] [2021-10-07 15:21:38,926 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:21:38,926 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:21:38,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:21:38,927 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:21:38,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-07 15:21:39,263 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:21:39,264 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:21:39,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:21:39,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:21:39,820 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:39,820 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:21:40,057 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:40,058 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:21:40,058 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2083539751] [2021-10-07 15:21:40,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2083539751] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:21:40,058 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:21:40,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-07 15:21:40,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750182067] [2021-10-07 15:21:40,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 15:21:40,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:21:40,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 15:21:40,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-07 15:21:40,060 INFO L87 Difference]: Start difference. First operand 1106 states and 5270 transitions. Second operand has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:21:40,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:21:40,300 INFO L93 Difference]: Finished difference Result 1382 states and 6191 transitions. [2021-10-07 15:21:40,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-07 15:21:40,301 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 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 23 [2021-10-07 15:21:40,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:21:40,334 INFO L225 Difference]: With dead ends: 1382 [2021-10-07 15:21:40,334 INFO L226 Difference]: Without dead ends: 1332 [2021-10-07 15:21:40,341 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 106.0ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-07 15:21:40,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1332 states. [2021-10-07 15:21:40,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1332 to 1168. [2021-10-07 15:21:40,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1168 states, 1167 states have (on average 4.758354755784062) internal successors, (5553), 1167 states have internal predecessors, (5553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:21:40,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1168 states to 1168 states and 5553 transitions. [2021-10-07 15:21:40,399 INFO L78 Accepts]: Start accepts. Automaton has 1168 states and 5553 transitions. Word has length 23 [2021-10-07 15:21:40,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:21:40,400 INFO L470 AbstractCegarLoop]: Abstraction has 1168 states and 5553 transitions. [2021-10-07 15:21:40,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:21:40,400 INFO L276 IsEmpty]: Start isEmpty. Operand 1168 states and 5553 transitions. [2021-10-07 15:21:40,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-07 15:21:40,406 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:21:40,406 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:21:40,423 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-10-07 15:21:40,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:21:40,624 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:21:40,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:21:40,625 INFO L82 PathProgramCache]: Analyzing trace with hash -402590731, now seen corresponding path program 3 times [2021-10-07 15:21:40,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:21:40,626 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [231557193] [2021-10-07 15:21:40,626 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:21:40,627 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:21:40,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:21:40,629 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:21:40,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-07 15:21:40,952 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 15:21:40,952 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:21:40,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 15:21:40,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:21:41,204 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:41,204 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:21:41,469 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:41,470 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:21:41,470 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [231557193] [2021-10-07 15:21:41,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [231557193] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:21:41,470 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:21:41,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2021-10-07 15:21:41,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470431641] [2021-10-07 15:21:41,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:21:41,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:21:41,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:21:41,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:21:41,472 INFO L87 Difference]: Start difference. First operand 1168 states and 5553 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 11 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:21:42,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:21:42,885 INFO L93 Difference]: Finished difference Result 2802 states and 12099 transitions. [2021-10-07 15:21:42,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-07 15:21:42,886 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 11 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 24 [2021-10-07 15:21:42,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:21:42,901 INFO L225 Difference]: With dead ends: 2802 [2021-10-07 15:21:42,901 INFO L226 Difference]: Without dead ends: 2802 [2021-10-07 15:21:42,901 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 639.1ms TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2021-10-07 15:21:42,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2802 states. [2021-10-07 15:21:42,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2802 to 1478. [2021-10-07 15:21:42,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1478 states, 1477 states have (on average 4.901150981719702) internal successors, (7239), 1477 states have internal predecessors, (7239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:21:42,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1478 states to 1478 states and 7239 transitions. [2021-10-07 15:21:42,992 INFO L78 Accepts]: Start accepts. Automaton has 1478 states and 7239 transitions. Word has length 24 [2021-10-07 15:21:42,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:21:42,993 INFO L470 AbstractCegarLoop]: Abstraction has 1478 states and 7239 transitions. [2021-10-07 15:21:42,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 11 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:21:42,993 INFO L276 IsEmpty]: Start isEmpty. Operand 1478 states and 7239 transitions. [2021-10-07 15:21:43,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-07 15:21:43,001 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:21:43,001 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:21:43,015 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Ended with exit code 0 [2021-10-07 15:21:43,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:21:43,215 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:21:43,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:21:43,216 INFO L82 PathProgramCache]: Analyzing trace with hash 1602477994, now seen corresponding path program 4 times [2021-10-07 15:21:43,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:21:43,218 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1917982490] [2021-10-07 15:21:43,218 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:21:43,218 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:21:43,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:21:43,220 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:21:43,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-10-07 15:21:43,526 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:21:43,527 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:21:43,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-07 15:21:43,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:21:43,705 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:43,705 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:21:43,882 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:43,882 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:21:43,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1917982490] [2021-10-07 15:21:43,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1917982490] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:21:43,882 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:21:43,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-07 15:21:43,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948438621] [2021-10-07 15:21:43,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 15:21:43,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:21:43,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 15:21:43,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-07 15:21:43,884 INFO L87 Difference]: Start difference. First operand 1478 states and 7239 transitions. Second operand has 10 states, 10 states have (on average 3.3) 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) [2021-10-07 15:21:56,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:21:56,723 INFO L93 Difference]: Finished difference Result 2478 states and 10686 transitions. [2021-10-07 15:21:56,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-07 15:21:56,724 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.3) 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 24 [2021-10-07 15:21:56,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:21:56,738 INFO L225 Difference]: With dead ends: 2478 [2021-10-07 15:21:56,738 INFO L226 Difference]: Without dead ends: 2422 [2021-10-07 15:21:56,739 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 566.5ms TimeCoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2021-10-07 15:21:56,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2422 states. [2021-10-07 15:21:56,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2422 to 1550. [2021-10-07 15:21:56,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1550 states, 1549 states have (on average 4.8521626856036155) internal successors, (7516), 1549 states have internal predecessors, (7516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:21:56,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1550 states to 1550 states and 7516 transitions. [2021-10-07 15:21:56,813 INFO L78 Accepts]: Start accepts. Automaton has 1550 states and 7516 transitions. Word has length 24 [2021-10-07 15:21:56,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:21:56,813 INFO L470 AbstractCegarLoop]: Abstraction has 1550 states and 7516 transitions. [2021-10-07 15:21:56,813 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.3) 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) [2021-10-07 15:21:56,814 INFO L276 IsEmpty]: Start isEmpty. Operand 1550 states and 7516 transitions. [2021-10-07 15:21:56,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-07 15:21:56,821 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:21:56,821 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:21:56,835 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-10-07 15:21:57,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:21:57,034 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:21:57,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:21:57,035 INFO L82 PathProgramCache]: Analyzing trace with hash -2147312977, now seen corresponding path program 5 times [2021-10-07 15:21:57,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:21:57,036 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1922169268] [2021-10-07 15:21:57,036 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:21:57,036 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:21:57,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:21:57,037 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:21:57,038 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-07 15:21:57,333 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-07 15:21:57,333 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:21:57,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-07 15:21:57,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:21:57,522 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:57,523 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:21:57,692 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:57,693 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:21:57,693 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1922169268] [2021-10-07 15:21:57,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1922169268] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:21:57,693 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:21:57,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-07 15:21:57,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086086879] [2021-10-07 15:21:57,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 15:21:57,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:21:57,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 15:21:57,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-07 15:21:57,695 INFO L87 Difference]: Start difference. First operand 1550 states and 7516 transitions. Second operand has 10 states, 10 states have (on average 3.3) 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) [2021-10-07 15:21:59,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:21:59,290 INFO L93 Difference]: Finished difference Result 3074 states and 13128 transitions. [2021-10-07 15:21:59,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-07 15:21:59,291 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.3) 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 24 [2021-10-07 15:21:59,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:21:59,309 INFO L225 Difference]: With dead ends: 3074 [2021-10-07 15:21:59,309 INFO L226 Difference]: Without dead ends: 3074 [2021-10-07 15:21:59,310 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 392.9ms TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2021-10-07 15:21:59,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3074 states. [2021-10-07 15:21:59,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3074 to 1520. [2021-10-07 15:21:59,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1520 states, 1519 states have (on average 4.80513495720869) internal successors, (7299), 1519 states have internal predecessors, (7299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:21:59,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1520 states to 1520 states and 7299 transitions. [2021-10-07 15:21:59,394 INFO L78 Accepts]: Start accepts. Automaton has 1520 states and 7299 transitions. Word has length 24 [2021-10-07 15:21:59,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:21:59,395 INFO L470 AbstractCegarLoop]: Abstraction has 1520 states and 7299 transitions. [2021-10-07 15:21:59,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.3) 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) [2021-10-07 15:21:59,395 INFO L276 IsEmpty]: Start isEmpty. Operand 1520 states and 7299 transitions. [2021-10-07 15:21:59,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-07 15:21:59,401 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:21:59,401 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:21:59,414 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-10-07 15:21:59,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:21:59,614 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:21:59,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:21:59,615 INFO L82 PathProgramCache]: Analyzing trace with hash 1920792276, now seen corresponding path program 6 times [2021-10-07 15:21:59,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:21:59,616 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [796844510] [2021-10-07 15:21:59,616 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:21:59,617 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:21:59,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:21:59,618 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:21:59,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-10-07 15:21:59,991 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-07 15:21:59,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:21:59,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-07 15:21:59,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:22:00,154 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:22:00,154 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:22:00,335 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:22:00,335 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:22:00,335 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [796844510] [2021-10-07 15:22:00,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [796844510] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:22:00,335 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:22:00,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-07 15:22:00,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417707018] [2021-10-07 15:22:00,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 15:22:00,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:22:00,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 15:22:00,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-07 15:22:00,337 INFO L87 Difference]: Start difference. First operand 1520 states and 7299 transitions. Second operand has 10 states, 10 states have (on average 3.3) 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) [2021-10-07 15:22:00,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:22:00,905 INFO L93 Difference]: Finished difference Result 2298 states and 9980 transitions. [2021-10-07 15:22:00,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-07 15:22:00,905 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.3) 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 24 [2021-10-07 15:22:00,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:22:00,918 INFO L225 Difference]: With dead ends: 2298 [2021-10-07 15:22:00,918 INFO L226 Difference]: Without dead ends: 2262 [2021-10-07 15:22:00,919 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 243.6ms TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:22:00,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2262 states. [2021-10-07 15:22:00,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2262 to 1534. [2021-10-07 15:22:00,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1534 states, 1533 states have (on average 4.782126549249837) internal successors, (7331), 1533 states have internal predecessors, (7331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:22:00,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1534 states to 1534 states and 7331 transitions. [2021-10-07 15:22:00,995 INFO L78 Accepts]: Start accepts. Automaton has 1534 states and 7331 transitions. Word has length 24 [2021-10-07 15:22:00,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:22:00,995 INFO L470 AbstractCegarLoop]: Abstraction has 1534 states and 7331 transitions. [2021-10-07 15:22:00,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.3) 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) [2021-10-07 15:22:00,995 INFO L276 IsEmpty]: Start isEmpty. Operand 1534 states and 7331 transitions. [2021-10-07 15:22:01,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-07 15:22:01,002 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:22:01,002 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:22:01,013 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Ended with exit code 0 [2021-10-07 15:22:01,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:22:01,210 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:22:01,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:22:01,211 INFO L82 PathProgramCache]: Analyzing trace with hash 1029502268, now seen corresponding path program 7 times [2021-10-07 15:22:01,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:22:01,212 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1983103680] [2021-10-07 15:22:01,212 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:22:01,212 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:22:01,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:22:01,214 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:22:01,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-10-07 15:22:01,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:22:01,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-07 15:22:01,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:22:01,654 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:22:01,655 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:22:01,821 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:22:01,821 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:22:01,821 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1983103680] [2021-10-07 15:22:01,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1983103680] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:22:01,821 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:22:01,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-07 15:22:01,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851904702] [2021-10-07 15:22:01,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 15:22:01,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:22:01,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 15:22:01,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-07 15:22:01,823 INFO L87 Difference]: Start difference. First operand 1534 states and 7331 transitions. Second operand has 10 states, 10 states have (on average 3.3) 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) [2021-10-07 15:22:02,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:22:02,621 INFO L93 Difference]: Finished difference Result 2196 states and 9763 transitions. [2021-10-07 15:22:02,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-07 15:22:02,622 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.3) 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 24 [2021-10-07 15:22:02,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:22:02,634 INFO L225 Difference]: With dead ends: 2196 [2021-10-07 15:22:02,634 INFO L226 Difference]: Without dead ends: 2196 [2021-10-07 15:22:02,635 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 197.9ms TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:22:02,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2196 states. [2021-10-07 15:22:02,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2196 to 1534. [2021-10-07 15:22:02,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1534 states, 1533 states have (on average 4.782126549249837) internal successors, (7331), 1533 states have internal predecessors, (7331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:22:02,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1534 states to 1534 states and 7331 transitions. [2021-10-07 15:22:02,708 INFO L78 Accepts]: Start accepts. Automaton has 1534 states and 7331 transitions. Word has length 24 [2021-10-07 15:22:02,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:22:02,708 INFO L470 AbstractCegarLoop]: Abstraction has 1534 states and 7331 transitions. [2021-10-07 15:22:02,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.3) 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) [2021-10-07 15:22:02,709 INFO L276 IsEmpty]: Start isEmpty. Operand 1534 states and 7331 transitions. [2021-10-07 15:22:02,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-07 15:22:02,715 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:22:02,715 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:22:02,731 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-10-07 15:22:02,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:22:02,929 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:22:02,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:22:02,930 INFO L82 PathProgramCache]: Analyzing trace with hash -1063103496, now seen corresponding path program 3 times [2021-10-07 15:22:02,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:22:02,930 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [456919482] [2021-10-07 15:22:02,930 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:22:02,931 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:22:02,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:22:02,932 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:22:02,966 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-10-07 15:22:03,300 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 15:22:03,300 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:22:03,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 15:22:03,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:22:03,559 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:22:03,559 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:22:04,035 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:22:04,035 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:22:04,036 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [456919482] [2021-10-07 15:22:04,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [456919482] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:22:04,036 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:22:04,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2021-10-07 15:22:04,036 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062544178] [2021-10-07 15:22:04,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-07 15:22:04,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:22:04,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-07 15:22:04,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-07 15:22:04,037 INFO L87 Difference]: Start difference. First operand 1534 states and 7331 transitions. Second operand has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:22:05,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:22:05,662 INFO L93 Difference]: Finished difference Result 3096 states and 13635 transitions. [2021-10-07 15:22:05,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-07 15:22:05,663 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 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 24 [2021-10-07 15:22:05,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:22:05,683 INFO L225 Difference]: With dead ends: 3096 [2021-10-07 15:22:05,684 INFO L226 Difference]: Without dead ends: 3062 [2021-10-07 15:22:05,684 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 793.9ms TimeCoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2021-10-07 15:22:05,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3062 states. [2021-10-07 15:22:05,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3062 to 2220. [2021-10-07 15:22:05,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2220 states, 2219 states have (on average 4.733213159080667) internal successors, (10503), 2219 states have internal predecessors, (10503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:22:05,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2220 states to 2220 states and 10503 transitions. [2021-10-07 15:22:05,794 INFO L78 Accepts]: Start accepts. Automaton has 2220 states and 10503 transitions. Word has length 24 [2021-10-07 15:22:05,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:22:05,795 INFO L470 AbstractCegarLoop]: Abstraction has 2220 states and 10503 transitions. [2021-10-07 15:22:05,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:22:05,795 INFO L276 IsEmpty]: Start isEmpty. Operand 2220 states and 10503 transitions. [2021-10-07 15:22:05,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-07 15:22:05,804 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:22:05,805 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:22:05,821 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-10-07 15:22:06,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:22:06,019 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:22:06,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:22:06,019 INFO L82 PathProgramCache]: Analyzing trace with hash -2108118788, now seen corresponding path program 4 times [2021-10-07 15:22:06,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:22:06,020 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1143362164] [2021-10-07 15:22:06,020 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:22:06,021 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:22:06,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:22:06,022 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:22:06,049 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-10-07 15:22:06,353 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:22:06,354 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:22:06,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 15:22:06,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:22:06,628 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:22:06,628 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:22:07,210 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:22:07,210 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:22:07,211 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1143362164] [2021-10-07 15:22:07,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1143362164] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:22:07,211 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:22:07,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2021-10-07 15:22:07,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080296641] [2021-10-07 15:22:07,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-07 15:22:07,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:22:07,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-07 15:22:07,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-10-07 15:22:07,213 INFO L87 Difference]: Start difference. First operand 2220 states and 10503 transitions. Second operand has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:22:08,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:22:08,876 INFO L93 Difference]: Finished difference Result 3706 states and 16712 transitions. [2021-10-07 15:22:08,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-07 15:22:08,877 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 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 24 [2021-10-07 15:22:08,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:22:08,928 INFO L225 Difference]: With dead ends: 3706 [2021-10-07 15:22:08,929 INFO L226 Difference]: Without dead ends: 3680 [2021-10-07 15:22:08,929 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 830.3ms TimeCoverageRelationStatistics Valid=101, Invalid=319, Unknown=0, NotChecked=0, Total=420 [2021-10-07 15:22:08,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3680 states. [2021-10-07 15:22:09,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3680 to 2448. [2021-10-07 15:22:09,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2448 states, 2447 states have (on average 4.822639967306906) internal successors, (11801), 2447 states have internal predecessors, (11801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:22:09,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2448 states to 2448 states and 11801 transitions. [2021-10-07 15:22:09,075 INFO L78 Accepts]: Start accepts. Automaton has 2448 states and 11801 transitions. Word has length 24 [2021-10-07 15:22:09,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:22:09,075 INFO L470 AbstractCegarLoop]: Abstraction has 2448 states and 11801 transitions. [2021-10-07 15:22:09,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:22:09,076 INFO L276 IsEmpty]: Start isEmpty. Operand 2448 states and 11801 transitions. [2021-10-07 15:22:09,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-07 15:22:09,086 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:22:09,086 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:22:09,100 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Ended with exit code 0 [2021-10-07 15:22:09,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:22:09,300 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:22:09,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:22:09,301 INFO L82 PathProgramCache]: Analyzing trace with hash 917748386, now seen corresponding path program 5 times [2021-10-07 15:22:09,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:22:09,303 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1486980040] [2021-10-07 15:22:09,303 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:22:09,304 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:22:09,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:22:09,305 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:22:09,326 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-10-07 15:22:09,677 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-07 15:22:09,677 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:22:09,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 15:22:09,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:22:09,961 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:22:09,961 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:22:10,474 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:22:10,475 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:22:10,475 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1486980040] [2021-10-07 15:22:10,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1486980040] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:22:10,475 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:22:10,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2021-10-07 15:22:10,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779557420] [2021-10-07 15:22:10,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-07 15:22:10,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:22:10,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-07 15:22:10,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-10-07 15:22:10,478 INFO L87 Difference]: Start difference. First operand 2448 states and 11801 transitions. Second operand has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:22:12,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:22:12,002 INFO L93 Difference]: Finished difference Result 5806 states and 26536 transitions. [2021-10-07 15:22:12,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-07 15:22:12,003 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 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 24 [2021-10-07 15:22:12,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:22:12,033 INFO L225 Difference]: With dead ends: 5806 [2021-10-07 15:22:12,033 INFO L226 Difference]: Without dead ends: 5806 [2021-10-07 15:22:12,034 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 749.3ms TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2021-10-07 15:22:12,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5806 states. [2021-10-07 15:22:12,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5806 to 2940. [2021-10-07 15:22:12,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2940 states, 2939 states have (on average 5.08506294658047) internal successors, (14945), 2939 states have internal predecessors, (14945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:22:12,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2940 states to 2940 states and 14945 transitions. [2021-10-07 15:22:12,260 INFO L78 Accepts]: Start accepts. Automaton has 2940 states and 14945 transitions. Word has length 24 [2021-10-07 15:22:12,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:22:12,260 INFO L470 AbstractCegarLoop]: Abstraction has 2940 states and 14945 transitions. [2021-10-07 15:22:12,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:22:12,261 INFO L276 IsEmpty]: Start isEmpty. Operand 2940 states and 14945 transitions. [2021-10-07 15:22:12,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-07 15:22:12,273 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:22:12,273 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:22:12,288 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-10-07 15:22:12,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:22:12,488 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:22:12,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:22:12,489 INFO L82 PathProgramCache]: Analyzing trace with hash 1102993100, now seen corresponding path program 6 times [2021-10-07 15:22:12,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:22:12,490 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1209748303] [2021-10-07 15:22:12,490 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:22:12,491 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:22:12,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:22:12,492 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:22:12,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-10-07 15:22:12,909 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-07 15:22:12,910 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:22:12,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 15:22:12,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:22:13,132 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:22:13,132 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:22:13,568 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:22:13,569 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:22:13,569 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1209748303] [2021-10-07 15:22:13,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1209748303] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:22:13,569 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:22:13,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2021-10-07 15:22:13,570 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139850936] [2021-10-07 15:22:13,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-07 15:22:13,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:22:13,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-07 15:22:13,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-10-07 15:22:13,571 INFO L87 Difference]: Start difference. First operand 2940 states and 14945 transitions. Second operand has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:22:14,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:22:14,819 INFO L93 Difference]: Finished difference Result 4442 states and 21137 transitions. [2021-10-07 15:22:14,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-07 15:22:14,820 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 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 24 [2021-10-07 15:22:14,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:22:14,835 INFO L225 Difference]: With dead ends: 4442 [2021-10-07 15:22:14,836 INFO L226 Difference]: Without dead ends: 4392 [2021-10-07 15:22:14,836 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 470.6ms TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2021-10-07 15:22:14,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4392 states. [2021-10-07 15:22:14,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4392 to 3270. [2021-10-07 15:22:14,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3270 states, 3269 states have (on average 5.167635362496176) internal successors, (16893), 3269 states have internal predecessors, (16893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:22:15,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3270 states to 3270 states and 16893 transitions. [2021-10-07 15:22:15,027 INFO L78 Accepts]: Start accepts. Automaton has 3270 states and 16893 transitions. Word has length 24 [2021-10-07 15:22:15,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:22:15,027 INFO L470 AbstractCegarLoop]: Abstraction has 3270 states and 16893 transitions. [2021-10-07 15:22:15,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:22:15,028 INFO L276 IsEmpty]: Start isEmpty. Operand 3270 states and 16893 transitions. [2021-10-07 15:22:15,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-07 15:22:15,041 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:22:15,041 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:22:15,052 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Ended with exit code 0 [2021-10-07 15:22:15,242 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:22:15,242 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:22:15,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:22:15,243 INFO L82 PathProgramCache]: Analyzing trace with hash -166107022, now seen corresponding path program 7 times [2021-10-07 15:22:15,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:22:15,244 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [417163453] [2021-10-07 15:22:15,244 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:22:15,244 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:22:15,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:22:15,246 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:22:15,246 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-10-07 15:22:15,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:22:15,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 15:22:15,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:22:15,813 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:22:15,813 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:22:16,402 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:22:16,402 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:22:16,402 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [417163453] [2021-10-07 15:22:16,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [417163453] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:22:16,402 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:22:16,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2021-10-07 15:22:16,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941223170] [2021-10-07 15:22:16,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-07 15:22:16,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:22:16,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-07 15:22:16,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-10-07 15:22:16,408 INFO L87 Difference]: Start difference. First operand 3270 states and 16893 transitions. Second operand has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:22:18,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:22:18,099 INFO L93 Difference]: Finished difference Result 6404 states and 30246 transitions. [2021-10-07 15:22:18,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-07 15:22:18,100 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 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 24 [2021-10-07 15:22:18,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:22:18,123 INFO L225 Difference]: With dead ends: 6404 [2021-10-07 15:22:18,124 INFO L226 Difference]: Without dead ends: 6404 [2021-10-07 15:22:18,124 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 675.6ms TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2021-10-07 15:22:18,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6404 states. [2021-10-07 15:22:18,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6404 to 3514. [2021-10-07 15:22:18,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3514 states, 3513 states have (on average 5.195844007970396) internal successors, (18253), 3513 states have internal predecessors, (18253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:22:18,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3514 states to 3514 states and 18253 transitions. [2021-10-07 15:22:18,344 INFO L78 Accepts]: Start accepts. Automaton has 3514 states and 18253 transitions. Word has length 24 [2021-10-07 15:22:18,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:22:18,345 INFO L470 AbstractCegarLoop]: Abstraction has 3514 states and 18253 transitions. [2021-10-07 15:22:18,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:22:18,345 INFO L276 IsEmpty]: Start isEmpty. Operand 3514 states and 18253 transitions. [2021-10-07 15:22:18,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-07 15:22:18,361 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:22:18,362 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:22:18,378 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-10-07 15:22:18,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:22:18,576 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:22:18,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:22:18,576 INFO L82 PathProgramCache]: Analyzing trace with hash 781369762, now seen corresponding path program 8 times [2021-10-07 15:22:18,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:22:18,577 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1026209575] [2021-10-07 15:22:18,577 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:22:18,578 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:22:18,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:22:18,579 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:22:18,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-10-07 15:22:19,127 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:22:19,127 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:22:19,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 15:22:19,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:22:19,344 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:22:19,345 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:22:19,878 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:22:19,878 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:22:19,879 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1026209575] [2021-10-07 15:22:19,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1026209575] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:22:19,879 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:22:19,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2021-10-07 15:22:19,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287738744] [2021-10-07 15:22:19,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-07 15:22:19,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:22:19,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-07 15:22:19,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-07 15:22:19,881 INFO L87 Difference]: Start difference. First operand 3514 states and 18253 transitions. Second operand has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:22:22,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:22:22,246 INFO L93 Difference]: Finished difference Result 6048 states and 29472 transitions. [2021-10-07 15:22:22,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-07 15:22:22,247 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 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 24 [2021-10-07 15:22:22,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:22:22,307 INFO L225 Difference]: With dead ends: 6048 [2021-10-07 15:22:22,307 INFO L226 Difference]: Without dead ends: 6048 [2021-10-07 15:22:22,309 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 725.7ms TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2021-10-07 15:22:22,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6048 states. [2021-10-07 15:22:22,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6048 to 4060. [2021-10-07 15:22:22,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4060 states, 4059 states have (on average 5.329884207932988) internal successors, (21634), 4059 states have internal predecessors, (21634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:22:22,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4060 states to 4060 states and 21634 transitions. [2021-10-07 15:22:22,598 INFO L78 Accepts]: Start accepts. Automaton has 4060 states and 21634 transitions. Word has length 24 [2021-10-07 15:22:22,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:22:22,599 INFO L470 AbstractCegarLoop]: Abstraction has 4060 states and 21634 transitions. [2021-10-07 15:22:22,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:22:22,599 INFO L276 IsEmpty]: Start isEmpty. Operand 4060 states and 21634 transitions. [2021-10-07 15:22:22,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-07 15:22:22,622 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:22:22,622 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:22:22,673 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2021-10-07 15:22:22,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:22:22,855 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:22:22,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:22:22,856 INFO L82 PathProgramCache]: Analyzing trace with hash -1049738101, now seen corresponding path program 8 times [2021-10-07 15:22:22,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:22:22,857 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1357493286] [2021-10-07 15:22:22,857 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:22:22,858 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:22:22,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:22:22,860 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:22:22,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-10-07 15:22:23,296 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:22:23,297 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:22:23,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-07 15:22:23,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:22:23,514 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:22:23,515 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:22:23,682 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:22:23,682 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:22:23,682 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1357493286] [2021-10-07 15:22:23,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1357493286] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:22:23,683 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:22:23,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-07 15:22:23,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208903558] [2021-10-07 15:22:23,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 15:22:23,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:22:23,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 15:22:23,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-07 15:22:23,685 INFO L87 Difference]: Start difference. First operand 4060 states and 21634 transitions. Second operand has 10 states, 10 states have (on average 3.4) internal successors, (34), 9 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:22:25,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:22:25,853 INFO L93 Difference]: Finished difference Result 8954 states and 43077 transitions. [2021-10-07 15:22:25,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-07 15:22:25,854 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 9 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 24 [2021-10-07 15:22:25,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:22:25,889 INFO L225 Difference]: With dead ends: 8954 [2021-10-07 15:22:25,889 INFO L226 Difference]: Without dead ends: 8954 [2021-10-07 15:22:25,889 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 194.1ms TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:22:25,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8954 states. [2021-10-07 15:22:26,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8954 to 4188. [2021-10-07 15:22:26,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4188 states, 4187 states have (on average 5.381896345832338) internal successors, (22534), 4187 states have internal predecessors, (22534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:22:26,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4188 states to 4188 states and 22534 transitions. [2021-10-07 15:22:26,241 INFO L78 Accepts]: Start accepts. Automaton has 4188 states and 22534 transitions. Word has length 24 [2021-10-07 15:22:26,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:22:26,242 INFO L470 AbstractCegarLoop]: Abstraction has 4188 states and 22534 transitions. [2021-10-07 15:22:26,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 9 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:22:26,242 INFO L276 IsEmpty]: Start isEmpty. Operand 4188 states and 22534 transitions. [2021-10-07 15:22:26,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-07 15:22:26,262 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:22:26,262 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:22:26,278 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Ended with exit code 0 [2021-10-07 15:22:26,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:22:26,478 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:22:26,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:22:26,478 INFO L82 PathProgramCache]: Analyzing trace with hash -863562708, now seen corresponding path program 9 times [2021-10-07 15:22:26,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:22:26,479 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [609642676] [2021-10-07 15:22:26,480 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:22:26,480 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:22:26,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:22:26,482 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:22:26,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-10-07 15:22:26,934 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-07 15:22:26,934 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:22:26,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 15:22:26,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:22:27,078 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:22:27,078 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:22:27,378 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:22:27,379 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:22:27,379 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [609642676] [2021-10-07 15:22:27,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [609642676] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:22:27,379 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:22:27,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2021-10-07 15:22:27,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84687613] [2021-10-07 15:22:27,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-07 15:22:27,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:22:27,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-07 15:22:27,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-10-07 15:22:27,381 INFO L87 Difference]: Start difference. First operand 4188 states and 22534 transitions. Second operand has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 10 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:22:29,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:22:29,663 INFO L93 Difference]: Finished difference Result 8582 states and 40961 transitions. [2021-10-07 15:22:29,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-07 15:22:29,664 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 10 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 24 [2021-10-07 15:22:29,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:22:29,714 INFO L225 Difference]: With dead ends: 8582 [2021-10-07 15:22:29,714 INFO L226 Difference]: Without dead ends: 8544 [2021-10-07 15:22:29,715 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 433.5ms TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2021-10-07 15:22:29,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8544 states. [2021-10-07 15:22:29,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8544 to 4518. [2021-10-07 15:22:29,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4518 states, 4517 states have (on average 5.352446313925172) internal successors, (24177), 4517 states have internal predecessors, (24177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:22:29,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4518 states to 4518 states and 24177 transitions. [2021-10-07 15:22:29,966 INFO L78 Accepts]: Start accepts. Automaton has 4518 states and 24177 transitions. Word has length 24 [2021-10-07 15:22:29,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:22:29,966 INFO L470 AbstractCegarLoop]: Abstraction has 4518 states and 24177 transitions. [2021-10-07 15:22:29,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 10 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:22:29,966 INFO L276 IsEmpty]: Start isEmpty. Operand 4518 states and 24177 transitions. [2021-10-07 15:22:29,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-07 15:22:29,986 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:22:29,986 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:22:30,002 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2021-10-07 15:22:30,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:22:30,200 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:22:30,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:22:30,201 INFO L82 PathProgramCache]: Analyzing trace with hash -1754852716, now seen corresponding path program 10 times [2021-10-07 15:22:30,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:22:30,202 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [501108731] [2021-10-07 15:22:30,202 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:22:30,202 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:22:30,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:22:30,204 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:22:30,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-10-07 15:22:30,609 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:22:30,610 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:22:30,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-07 15:22:30,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:22:30,815 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:22:30,815 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:22:30,982 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:22:30,982 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:22:30,982 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [501108731] [2021-10-07 15:22:30,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [501108731] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:22:30,982 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:22:30,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-07 15:22:30,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4875633] [2021-10-07 15:22:30,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 15:22:30,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:22:30,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 15:22:30,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-07 15:22:30,984 INFO L87 Difference]: Start difference. First operand 4518 states and 24177 transitions. Second operand has 10 states, 10 states have (on average 3.3) 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) [2021-10-07 15:22:33,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:22:33,013 INFO L93 Difference]: Finished difference Result 8298 states and 39903 transitions. [2021-10-07 15:22:33,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-07 15:22:33,013 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.3) 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 24 [2021-10-07 15:22:33,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:22:33,052 INFO L225 Difference]: With dead ends: 8298 [2021-10-07 15:22:33,052 INFO L226 Difference]: Without dead ends: 8298 [2021-10-07 15:22:33,053 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 327.9ms TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2021-10-07 15:22:33,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8298 states. [2021-10-07 15:22:33,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8298 to 4532. [2021-10-07 15:22:33,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4532 states, 4531 states have (on average 5.3226660781284485) internal successors, (24117), 4531 states have internal predecessors, (24117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:22:33,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4532 states to 4532 states and 24117 transitions. [2021-10-07 15:22:33,340 INFO L78 Accepts]: Start accepts. Automaton has 4532 states and 24117 transitions. Word has length 24 [2021-10-07 15:22:33,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:22:33,340 INFO L470 AbstractCegarLoop]: Abstraction has 4532 states and 24117 transitions. [2021-10-07 15:22:33,340 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.3) 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) [2021-10-07 15:22:33,340 INFO L276 IsEmpty]: Start isEmpty. Operand 4532 states and 24117 transitions. [2021-10-07 15:22:33,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-07 15:22:33,362 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:22:33,362 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:22:33,379 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2021-10-07 15:22:33,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:22:33,576 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:22:33,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:22:33,577 INFO L82 PathProgramCache]: Analyzing trace with hash -1433454686, now seen corresponding path program 11 times [2021-10-07 15:22:33,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:22:33,577 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1347814023] [2021-10-07 15:22:33,578 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:22:33,578 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:22:33,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:22:33,579 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:22:33,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-10-07 15:22:34,065 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-07 15:22:34,066 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:22:34,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-07 15:22:34,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:22:34,220 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:22:34,220 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:22:34,398 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:22:34,399 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:22:34,399 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1347814023] [2021-10-07 15:22:34,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1347814023] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:22:34,399 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:22:34,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-07 15:22:34,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221830539] [2021-10-07 15:22:34,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 15:22:34,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:22:34,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 15:22:34,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-07 15:22:34,401 INFO L87 Difference]: Start difference. First operand 4532 states and 24117 transitions. Second operand has 10 states, 10 states have (on average 3.3) 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) [2021-10-07 15:22:40,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:22:40,154 INFO L93 Difference]: Finished difference Result 6542 states and 32899 transitions. [2021-10-07 15:22:40,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-07 15:22:40,155 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.3) 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 24 [2021-10-07 15:22:40,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:22:40,184 INFO L225 Difference]: With dead ends: 6542 [2021-10-07 15:22:40,184 INFO L226 Difference]: Without dead ends: 6542 [2021-10-07 15:22:40,184 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 248.1ms TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:22:40,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6542 states. [2021-10-07 15:22:40,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6542 to 4768. [2021-10-07 15:22:40,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4768 states, 4767 states have (on average 5.317809943360604) internal successors, (25350), 4767 states have internal predecessors, (25350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:22:40,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4768 states to 4768 states and 25350 transitions. [2021-10-07 15:22:40,404 INFO L78 Accepts]: Start accepts. Automaton has 4768 states and 25350 transitions. Word has length 24 [2021-10-07 15:22:40,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:22:40,405 INFO L470 AbstractCegarLoop]: Abstraction has 4768 states and 25350 transitions. [2021-10-07 15:22:40,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.3) 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) [2021-10-07 15:22:40,405 INFO L276 IsEmpty]: Start isEmpty. Operand 4768 states and 25350 transitions. [2021-10-07 15:22:40,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:22:40,421 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:22:40,421 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:22:40,434 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2021-10-07 15:22:40,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:22:40,635 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:22:40,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:22:40,636 INFO L82 PathProgramCache]: Analyzing trace with hash 584665330, now seen corresponding path program 12 times [2021-10-07 15:22:40,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:22:40,637 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2048994410] [2021-10-07 15:22:40,637 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:22:40,637 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:22:40,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:22:40,638 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:22:40,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2021-10-07 15:22:41,149 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-07 15:22:41,149 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:22:41,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 15:22:41,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:22:41,704 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:22:41,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:22:42,022 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:22:42,022 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:22:42,022 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2048994410] [2021-10-07 15:22:42,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2048994410] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:22:42,022 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:22:42,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-07 15:22:42,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603040799] [2021-10-07 15:22:42,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:22:42,023 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:22:42,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:22:42,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:22:42,024 INFO L87 Difference]: Start difference. First operand 4768 states and 25350 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:22:47,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:22:47,157 INFO L93 Difference]: Finished difference Result 5434 states and 27619 transitions. [2021-10-07 15:22:47,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-07 15:22:47,158 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 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 25 [2021-10-07 15:22:47,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:22:47,178 INFO L225 Difference]: With dead ends: 5434 [2021-10-07 15:22:47,178 INFO L226 Difference]: Without dead ends: 5384 [2021-10-07 15:22:47,179 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 613.9ms TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:22:47,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5384 states. [2021-10-07 15:22:47,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5384 to 4882. [2021-10-07 15:22:47,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4882 states, 4881 states have (on average 5.286416717885679) internal successors, (25803), 4881 states have internal predecessors, (25803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:22:47,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4882 states to 4882 states and 25803 transitions. [2021-10-07 15:22:47,316 INFO L78 Accepts]: Start accepts. Automaton has 4882 states and 25803 transitions. Word has length 25 [2021-10-07 15:22:47,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:22:47,316 INFO L470 AbstractCegarLoop]: Abstraction has 4882 states and 25803 transitions. [2021-10-07 15:22:47,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:22:47,317 INFO L276 IsEmpty]: Start isEmpty. Operand 4882 states and 25803 transitions. [2021-10-07 15:22:47,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:22:47,332 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:22:47,332 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:22:47,343 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Ended with exit code 0 [2021-10-07 15:22:47,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:22:47,534 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:22:47,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:22:47,535 INFO L82 PathProgramCache]: Analyzing trace with hash -1689751277, now seen corresponding path program 1 times [2021-10-07 15:22:47,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:22:47,536 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1770533675] [2021-10-07 15:22:47,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:22:47,536 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:22:47,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:22:47,537 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:22:47,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2021-10-07 15:22:47,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:22:48,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 15:22:48,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:22:48,643 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:22:48,643 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:22:49,193 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:22:49,194 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:22:49,194 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1770533675] [2021-10-07 15:22:49,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1770533675] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:22:49,194 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:22:49,194 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-07 15:22:49,194 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013548056] [2021-10-07 15:22:49,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:22:49,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:22:49,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:22:49,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:22:49,196 INFO L87 Difference]: Start difference. First operand 4882 states and 25803 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:22:50,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:22:50,420 INFO L93 Difference]: Finished difference Result 6170 states and 31129 transitions. [2021-10-07 15:22:50,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-07 15:22:50,421 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 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 25 [2021-10-07 15:22:50,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:22:50,443 INFO L225 Difference]: With dead ends: 6170 [2021-10-07 15:22:50,443 INFO L226 Difference]: Without dead ends: 6056 [2021-10-07 15:22:50,443 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 470.5ms TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:22:50,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6056 states. [2021-10-07 15:22:50,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6056 to 5252. [2021-10-07 15:22:50,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5252 states, 5251 states have (on average 5.332317653780232) internal successors, (28000), 5251 states have internal predecessors, (28000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:22:50,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5252 states to 5252 states and 28000 transitions. [2021-10-07 15:22:50,681 INFO L78 Accepts]: Start accepts. Automaton has 5252 states and 28000 transitions. Word has length 25 [2021-10-07 15:22:50,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:22:50,681 INFO L470 AbstractCegarLoop]: Abstraction has 5252 states and 28000 transitions. [2021-10-07 15:22:50,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:22:50,681 INFO L276 IsEmpty]: Start isEmpty. Operand 5252 states and 28000 transitions. [2021-10-07 15:22:50,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:22:50,701 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:22:50,701 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:22:50,713 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2021-10-07 15:22:50,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:22:50,911 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:22:50,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:22:50,913 INFO L82 PathProgramCache]: Analyzing trace with hash -1342782529, now seen corresponding path program 2 times [2021-10-07 15:22:50,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:22:50,914 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1117028272] [2021-10-07 15:22:50,914 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:22:50,914 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:22:50,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:22:50,916 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:22:50,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2021-10-07 15:22:51,506 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:22:51,506 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:22:51,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 15:22:51,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:22:52,193 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:22:52,193 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:22:52,550 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:22:52,550 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:22:52,550 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1117028272] [2021-10-07 15:22:52,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1117028272] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:22:52,550 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:22:52,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-07 15:22:52,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671267132] [2021-10-07 15:22:52,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:22:52,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:22:52,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:22:52,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:22:52,553 INFO L87 Difference]: Start difference. First operand 5252 states and 28000 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:22:53,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:22:53,205 INFO L93 Difference]: Finished difference Result 6416 states and 32779 transitions. [2021-10-07 15:22:53,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-07 15:22:53,205 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 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 25 [2021-10-07 15:22:53,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:22:53,229 INFO L225 Difference]: With dead ends: 6416 [2021-10-07 15:22:53,229 INFO L226 Difference]: Without dead ends: 6316 [2021-10-07 15:22:53,230 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 293.4ms TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:22:53,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6316 states. [2021-10-07 15:22:53,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6316 to 5450. [2021-10-07 15:22:53,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5450 states, 5449 states have (on average 5.39438429069554) internal successors, (29394), 5449 states have internal predecessors, (29394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:22:53,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5450 states to 5450 states and 29394 transitions. [2021-10-07 15:22:53,464 INFO L78 Accepts]: Start accepts. Automaton has 5450 states and 29394 transitions. Word has length 25 [2021-10-07 15:22:53,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:22:53,464 INFO L470 AbstractCegarLoop]: Abstraction has 5450 states and 29394 transitions. [2021-10-07 15:22:53,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:22:53,464 INFO L276 IsEmpty]: Start isEmpty. Operand 5450 states and 29394 transitions. [2021-10-07 15:22:53,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:22:53,479 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:22:53,479 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:22:53,492 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2021-10-07 15:22:53,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:22:53,680 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:22:53,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:22:53,681 INFO L82 PathProgramCache]: Analyzing trace with hash 970109075, now seen corresponding path program 3 times [2021-10-07 15:22:53,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:22:53,682 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [24083684] [2021-10-07 15:22:53,682 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:22:53,682 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:22:53,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:22:53,683 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:22:53,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2021-10-07 15:22:54,331 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 15:22:54,331 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:22:54,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 15:22:54,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:22:54,908 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:22:54,909 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:22:55,276 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:22:55,276 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:22:55,276 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [24083684] [2021-10-07 15:22:55,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [24083684] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:22:55,277 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:22:55,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-07 15:22:55,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246027030] [2021-10-07 15:22:55,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:22:55,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:22:55,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:22:55,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:22:55,278 INFO L87 Difference]: Start difference. First operand 5450 states and 29394 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:22:56,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:22:56,218 INFO L93 Difference]: Finished difference Result 7150 states and 36614 transitions. [2021-10-07 15:22:56,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-07 15:22:56,219 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 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 25 [2021-10-07 15:22:56,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:22:56,264 INFO L225 Difference]: With dead ends: 7150 [2021-10-07 15:22:56,264 INFO L226 Difference]: Without dead ends: 7028 [2021-10-07 15:22:56,264 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 294.5ms TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:22:56,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7028 states. [2021-10-07 15:22:56,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7028 to 5742. [2021-10-07 15:22:56,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5742 states, 5741 states have (on average 5.443128374847587) internal successors, (31249), 5741 states have internal predecessors, (31249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:22:56,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5742 states to 5742 states and 31249 transitions. [2021-10-07 15:22:56,599 INFO L78 Accepts]: Start accepts. Automaton has 5742 states and 31249 transitions. Word has length 25 [2021-10-07 15:22:56,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:22:56,599 INFO L470 AbstractCegarLoop]: Abstraction has 5742 states and 31249 transitions. [2021-10-07 15:22:56,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:22:56,600 INFO L276 IsEmpty]: Start isEmpty. Operand 5742 states and 31249 transitions. [2021-10-07 15:22:56,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:22:56,616 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:22:56,617 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:22:56,630 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2021-10-07 15:22:56,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:22:56,817 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:22:56,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:22:56,819 INFO L82 PathProgramCache]: Analyzing trace with hash -1052582083, now seen corresponding path program 4 times [2021-10-07 15:22:56,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:22:56,819 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1119570247] [2021-10-07 15:22:56,819 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:22:56,820 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:22:56,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:22:56,821 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:22:56,822 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2021-10-07 15:22:57,366 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:22:57,366 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:22:57,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 15:22:57,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:22:57,992 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:22:57,992 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:22:58,463 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:22:58,464 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:22:58,464 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1119570247] [2021-10-07 15:22:58,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1119570247] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:22:58,464 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:22:58,464 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-07 15:22:58,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017337052] [2021-10-07 15:22:58,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:22:58,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:22:58,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:22:58,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:22:58,466 INFO L87 Difference]: Start difference. First operand 5742 states and 31249 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:22:59,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:22:59,220 INFO L93 Difference]: Finished difference Result 6696 states and 35161 transitions. [2021-10-07 15:22:59,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-07 15:22:59,221 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 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 25 [2021-10-07 15:22:59,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:22:59,265 INFO L225 Difference]: With dead ends: 6696 [2021-10-07 15:22:59,265 INFO L226 Difference]: Without dead ends: 6582 [2021-10-07 15:22:59,266 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 375.5ms TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:22:59,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6582 states. [2021-10-07 15:22:59,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6582 to 6104. [2021-10-07 15:22:59,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6104 states, 6103 states have (on average 5.448631820416189) internal successors, (33253), 6103 states have internal predecessors, (33253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:22:59,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6104 states to 6104 states and 33253 transitions. [2021-10-07 15:22:59,532 INFO L78 Accepts]: Start accepts. Automaton has 6104 states and 33253 transitions. Word has length 25 [2021-10-07 15:22:59,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:22:59,533 INFO L470 AbstractCegarLoop]: Abstraction has 6104 states and 33253 transitions. [2021-10-07 15:22:59,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:22:59,533 INFO L276 IsEmpty]: Start isEmpty. Operand 6104 states and 33253 transitions. [2021-10-07 15:22:59,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:22:59,549 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:22:59,549 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:22:59,560 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2021-10-07 15:22:59,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:22:59,750 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:22:59,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:22:59,751 INFO L82 PathProgramCache]: Analyzing trace with hash 2043825597, now seen corresponding path program 5 times [2021-10-07 15:22:59,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:22:59,752 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [339218915] [2021-10-07 15:22:59,752 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:22:59,752 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:22:59,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:22:59,754 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:22:59,754 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2021-10-07 15:23:00,350 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-07 15:23:00,350 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:23:00,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 15:23:00,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:23:00,989 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:23:00,989 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:23:01,451 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:23:01,451 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:23:01,454 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [339218915] [2021-10-07 15:23:01,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [339218915] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:23:01,454 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:23:01,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-07 15:23:01,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870996258] [2021-10-07 15:23:01,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:23:01,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:23:01,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:23:01,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:23:01,457 INFO L87 Difference]: Start difference. First operand 6104 states and 33253 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:23:01,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:23:01,985 INFO L93 Difference]: Finished difference Result 7016 states and 36957 transitions. [2021-10-07 15:23:01,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-07 15:23:01,985 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 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 25 [2021-10-07 15:23:01,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:23:02,013 INFO L225 Difference]: With dead ends: 7016 [2021-10-07 15:23:02,014 INFO L226 Difference]: Without dead ends: 6914 [2021-10-07 15:23:02,014 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 336.8ms TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:23:02,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6914 states. [2021-10-07 15:23:02,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6914 to 6336. [2021-10-07 15:23:02,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6336 states, 6335 states have (on average 5.458405682715075) internal successors, (34579), 6335 states have internal predecessors, (34579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:23:02,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6336 states to 6336 states and 34579 transitions. [2021-10-07 15:23:02,282 INFO L78 Accepts]: Start accepts. Automaton has 6336 states and 34579 transitions. Word has length 25 [2021-10-07 15:23:02,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:23:02,282 INFO L470 AbstractCegarLoop]: Abstraction has 6336 states and 34579 transitions. [2021-10-07 15:23:02,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:23:02,283 INFO L276 IsEmpty]: Start isEmpty. Operand 6336 states and 34579 transitions. [2021-10-07 15:23:02,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:23:02,303 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:23:02,304 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:23:02,314 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2021-10-07 15:23:02,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:23:02,512 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:23:02,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:23:02,512 INFO L82 PathProgramCache]: Analyzing trace with hash 1372055443, now seen corresponding path program 6 times [2021-10-07 15:23:02,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:23:02,513 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1471627723] [2021-10-07 15:23:02,513 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:23:02,514 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:23:02,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:23:02,515 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) [2021-10-07 15:23:02,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2021-10-07 15:23:03,230 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-07 15:23:03,231 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:23:03,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 15:23:03,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:23:03,901 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:23:03,901 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:23:04,295 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:23:04,296 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:23:04,296 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1471627723] [2021-10-07 15:23:04,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1471627723] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:23:04,296 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:23:04,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-07 15:23:04,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457716453] [2021-10-07 15:23:04,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:23:04,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:23:04,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:23:04,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:23:04,298 INFO L87 Difference]: Start difference. First operand 6336 states and 34579 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:23:04,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:23:04,952 INFO L93 Difference]: Finished difference Result 8110 states and 42023 transitions. [2021-10-07 15:23:04,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-07 15:23:04,955 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 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 25 [2021-10-07 15:23:04,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:23:04,986 INFO L225 Difference]: With dead ends: 8110 [2021-10-07 15:23:04,986 INFO L226 Difference]: Without dead ends: 7996 [2021-10-07 15:23:04,987 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 313.3ms TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:23:04,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7996 states. [2021-10-07 15:23:05,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7996 to 6566. [2021-10-07 15:23:05,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6566 states, 6565 states have (on average 5.501751713632902) internal successors, (36119), 6565 states have internal predecessors, (36119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:23:05,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6566 states to 6566 states and 36119 transitions. [2021-10-07 15:23:05,195 INFO L78 Accepts]: Start accepts. Automaton has 6566 states and 36119 transitions. Word has length 25 [2021-10-07 15:23:05,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:23:05,195 INFO L470 AbstractCegarLoop]: Abstraction has 6566 states and 36119 transitions. [2021-10-07 15:23:05,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:23:05,196 INFO L276 IsEmpty]: Start isEmpty. Operand 6566 states and 36119 transitions. [2021-10-07 15:23:05,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:23:05,215 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:23:05,215 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:23:05,227 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Ended with exit code 0 [2021-10-07 15:23:05,415 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 [2021-10-07 15:23:05,416 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:23:05,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:23:05,417 INFO L82 PathProgramCache]: Analyzing trace with hash 1843699946, now seen corresponding path program 13 times [2021-10-07 15:23:05,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:23:05,417 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [209118652] [2021-10-07 15:23:05,418 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:23:05,418 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:23:05,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:23:05,420 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) [2021-10-07 15:23:05,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2021-10-07 15:23:06,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:23:06,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 15:23:06,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:23:08,655 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:23:08,655 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:23:08,979 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:23:08,979 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:23:08,979 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [209118652] [2021-10-07 15:23:08,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [209118652] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:23:08,980 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:23:08,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-07 15:23:08,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240270186] [2021-10-07 15:23:08,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:23:08,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:23:08,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:23:08,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=96, Unknown=1, NotChecked=0, Total=132 [2021-10-07 15:23:08,982 INFO L87 Difference]: Start difference. First operand 6566 states and 36119 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:23:14,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:23:14,717 INFO L93 Difference]: Finished difference Result 7378 states and 38882 transitions. [2021-10-07 15:23:14,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-07 15:23:14,717 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 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 25 [2021-10-07 15:23:14,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:23:14,745 INFO L225 Difference]: With dead ends: 7378 [2021-10-07 15:23:14,745 INFO L226 Difference]: Without dead ends: 7328 [2021-10-07 15:23:14,746 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 6302.4ms TimeCoverageRelationStatistics Valid=42, Invalid=112, Unknown=2, NotChecked=0, Total=156 [2021-10-07 15:23:14,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7328 states. [2021-10-07 15:23:14,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7328 to 6624. [2021-10-07 15:23:14,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6624 states, 6623 states have (on average 5.50098142835573) internal successors, (36433), 6623 states have internal predecessors, (36433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:23:14,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6624 states to 6624 states and 36433 transitions. [2021-10-07 15:23:14,943 INFO L78 Accepts]: Start accepts. Automaton has 6624 states and 36433 transitions. Word has length 25 [2021-10-07 15:23:14,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:23:14,944 INFO L470 AbstractCegarLoop]: Abstraction has 6624 states and 36433 transitions. [2021-10-07 15:23:14,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:23:14,944 INFO L276 IsEmpty]: Start isEmpty. Operand 6624 states and 36433 transitions. [2021-10-07 15:23:14,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:23:14,965 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:23:14,965 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:23:14,977 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Ended with exit code 0 [2021-10-07 15:23:15,166 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 [2021-10-07 15:23:15,166 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:23:15,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:23:15,167 INFO L82 PathProgramCache]: Analyzing trace with hash -607884846, now seen corresponding path program 9 times [2021-10-07 15:23:15,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:23:15,168 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [98000301] [2021-10-07 15:23:15,168 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:23:15,168 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:23:15,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:23:15,170 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) [2021-10-07 15:23:15,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2021-10-07 15:23:15,930 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 15:23:15,930 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:23:15,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 15:23:15,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:23:16,447 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:23:16,448 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:23:16,812 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:23:16,812 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:23:16,812 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [98000301] [2021-10-07 15:23:16,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [98000301] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:23:16,812 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:23:16,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-07 15:23:16,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651856823] [2021-10-07 15:23:16,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:23:16,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:23:16,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:23:16,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:23:16,814 INFO L87 Difference]: Start difference. First operand 6624 states and 36433 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:23:17,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:23:17,586 INFO L93 Difference]: Finished difference Result 7216 states and 38494 transitions. [2021-10-07 15:23:17,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-07 15:23:17,587 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 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 25 [2021-10-07 15:23:17,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:23:17,619 INFO L225 Difference]: With dead ends: 7216 [2021-10-07 15:23:17,619 INFO L226 Difference]: Without dead ends: 7186 [2021-10-07 15:23:17,620 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 319.6ms TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:23:17,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7186 states. [2021-10-07 15:23:17,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7186 to 6816. [2021-10-07 15:23:17,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6816 states, 6815 states have (on average 5.468085106382978) internal successors, (37265), 6815 states have internal predecessors, (37265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:23:17,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6816 states to 6816 states and 37265 transitions. [2021-10-07 15:23:17,832 INFO L78 Accepts]: Start accepts. Automaton has 6816 states and 37265 transitions. Word has length 25 [2021-10-07 15:23:17,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:23:17,833 INFO L470 AbstractCegarLoop]: Abstraction has 6816 states and 37265 transitions. [2021-10-07 15:23:17,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:23:17,833 INFO L276 IsEmpty]: Start isEmpty. Operand 6816 states and 37265 transitions. [2021-10-07 15:23:17,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:23:17,857 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:23:17,857 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:23:17,872 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Forceful destruction successful, exit code 0 [2021-10-07 15:23:18,071 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 [2021-10-07 15:23:18,072 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:23:18,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:23:18,072 INFO L82 PathProgramCache]: Analyzing trace with hash 1236588412, now seen corresponding path program 10 times [2021-10-07 15:23:18,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:23:18,073 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [700012754] [2021-10-07 15:23:18,073 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:23:18,074 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:23:18,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:23:18,075 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) [2021-10-07 15:23:18,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2021-10-07 15:23:18,755 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:23:18,756 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:23:18,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 15:23:18,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:23:21,315 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:23:21,315 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:23:21,662 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:23:21,663 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:23:21,663 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [700012754] [2021-10-07 15:23:21,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [700012754] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:23:21,663 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:23:21,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-07 15:23:21,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329531650] [2021-10-07 15:23:21,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:23:21,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:23:21,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:23:21,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=96, Unknown=1, NotChecked=0, Total=132 [2021-10-07 15:23:21,665 INFO L87 Difference]: Start difference. First operand 6816 states and 37265 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:23:26,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:23:26,856 INFO L93 Difference]: Finished difference Result 7512 states and 39698 transitions. [2021-10-07 15:23:26,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-07 15:23:26,857 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 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 25 [2021-10-07 15:23:26,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:23:26,888 INFO L225 Difference]: With dead ends: 7512 [2021-10-07 15:23:26,888 INFO L226 Difference]: Without dead ends: 7482 [2021-10-07 15:23:26,889 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 6311.1ms TimeCoverageRelationStatistics Valid=42, Invalid=112, Unknown=2, NotChecked=0, Total=156 [2021-10-07 15:23:26,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7482 states. [2021-10-07 15:23:27,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7482 to 7070. [2021-10-07 15:23:27,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7070 states, 7069 states have (on average 5.444900268779176) internal successors, (38490), 7069 states have internal predecessors, (38490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:23:27,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7070 states to 7070 states and 38490 transitions. [2021-10-07 15:23:27,111 INFO L78 Accepts]: Start accepts. Automaton has 7070 states and 38490 transitions. Word has length 25 [2021-10-07 15:23:27,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:23:27,111 INFO L470 AbstractCegarLoop]: Abstraction has 7070 states and 38490 transitions. [2021-10-07 15:23:27,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:23:27,111 INFO L276 IsEmpty]: Start isEmpty. Operand 7070 states and 38490 transitions. [2021-10-07 15:23:27,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:23:27,135 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:23:27,135 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:23:27,150 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Forceful destruction successful, exit code 0 [2021-10-07 15:23:27,350 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 [2021-10-07 15:23:27,351 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:23:27,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:23:27,351 INFO L82 PathProgramCache]: Analyzing trace with hash 983384028, now seen corresponding path program 11 times [2021-10-07 15:23:27,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:23:27,352 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [288586526] [2021-10-07 15:23:27,352 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:23:27,352 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:23:27,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:23:27,354 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) [2021-10-07 15:23:27,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2021-10-07 15:23:28,135 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-07 15:23:28,136 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:23:28,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:23:28,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:23:28,359 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:23:28,359 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:23:28,580 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:23:28,581 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:23:28,581 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [288586526] [2021-10-07 15:23:28,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [288586526] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:23:28,581 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:23:28,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-07 15:23:28,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360419504] [2021-10-07 15:23:28,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 15:23:28,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:23:28,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 15:23:28,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-07 15:23:28,582 INFO L87 Difference]: Start difference. First operand 7070 states and 38490 transitions. Second operand has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:23:31,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:23:31,384 INFO L93 Difference]: Finished difference Result 8810 states and 45500 transitions. [2021-10-07 15:23:31,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-07 15:23:31,384 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 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 25 [2021-10-07 15:23:31,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:23:31,420 INFO L225 Difference]: With dead ends: 8810 [2021-10-07 15:23:31,420 INFO L226 Difference]: Without dead ends: 8810 [2021-10-07 15:23:31,420 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 224.7ms TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:23:31,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8810 states. [2021-10-07 15:23:31,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8810 to 7010. [2021-10-07 15:23:31,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7010 states, 7009 states have (on average 5.429733200171208) internal successors, (38057), 7009 states have internal predecessors, (38057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:23:31,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7010 states to 7010 states and 38057 transitions. [2021-10-07 15:23:31,737 INFO L78 Accepts]: Start accepts. Automaton has 7010 states and 38057 transitions. Word has length 25 [2021-10-07 15:23:31,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:23:31,737 INFO L470 AbstractCegarLoop]: Abstraction has 7010 states and 38057 transitions. [2021-10-07 15:23:31,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:23:31,738 INFO L276 IsEmpty]: Start isEmpty. Operand 7010 states and 38057 transitions. [2021-10-07 15:23:31,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:23:31,758 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:23:31,758 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:23:31,770 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (47)] Ended with exit code 0 [2021-10-07 15:23:31,959 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 [2021-10-07 15:23:31,959 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:23:31,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:23:31,960 INFO L82 PathProgramCache]: Analyzing trace with hash -1976534826, now seen corresponding path program 12 times [2021-10-07 15:23:31,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:23:31,961 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1215251928] [2021-10-07 15:23:31,961 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:23:31,962 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:23:31,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:23:31,963 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) [2021-10-07 15:23:31,966 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2021-10-07 15:23:32,816 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-07 15:23:32,816 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:23:32,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 15:23:32,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:23:35,311 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:23:35,312 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:23:35,629 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:23:35,629 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:23:35,629 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1215251928] [2021-10-07 15:23:35,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1215251928] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:23:35,629 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:23:35,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-07 15:23:35,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792787916] [2021-10-07 15:23:35,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:23:35,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:23:35,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:23:35,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=96, Unknown=1, NotChecked=0, Total=132 [2021-10-07 15:23:35,631 INFO L87 Difference]: Start difference. First operand 7010 states and 38057 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:23:40,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:23:40,330 INFO L93 Difference]: Finished difference Result 7464 states and 39420 transitions. [2021-10-07 15:23:40,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-07 15:23:40,330 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 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 25 [2021-10-07 15:23:40,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:23:40,360 INFO L225 Difference]: With dead ends: 7464 [2021-10-07 15:23:40,361 INFO L226 Difference]: Without dead ends: 7434 [2021-10-07 15:23:40,361 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 6301.3ms TimeCoverageRelationStatistics Valid=42, Invalid=112, Unknown=2, NotChecked=0, Total=156 [2021-10-07 15:23:40,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7434 states. [2021-10-07 15:23:40,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7434 to 6996. [2021-10-07 15:23:40,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6996 states, 6995 states have (on average 5.429163688348821) internal successors, (37977), 6995 states have internal predecessors, (37977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:23:40,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6996 states to 6996 states and 37977 transitions. [2021-10-07 15:23:40,729 INFO L78 Accepts]: Start accepts. Automaton has 6996 states and 37977 transitions. Word has length 25 [2021-10-07 15:23:40,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:23:40,729 INFO L470 AbstractCegarLoop]: Abstraction has 6996 states and 37977 transitions. [2021-10-07 15:23:40,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:23:40,729 INFO L276 IsEmpty]: Start isEmpty. Operand 6996 states and 37977 transitions. [2021-10-07 15:23:40,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:23:40,763 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:23:40,763 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:23:40,775 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (48)] Forceful destruction successful, exit code 0 [2021-10-07 15:23:40,964 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 [2021-10-07 15:23:40,964 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:23:40,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:23:40,966 INFO L82 PathProgramCache]: Analyzing trace with hash 1743604748, now seen corresponding path program 13 times [2021-10-07 15:23:40,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:23:40,967 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [842769046] [2021-10-07 15:23:40,967 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:23:40,967 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:23:40,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:23:40,969 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) [2021-10-07 15:23:40,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2021-10-07 15:23:41,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:23:41,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 15:23:41,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:23:42,089 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:23:42,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:23:43,141 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:23:43,142 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:23:43,142 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [842769046] [2021-10-07 15:23:43,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [842769046] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:23:43,142 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:23:43,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-07 15:23:43,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849135026] [2021-10-07 15:23:43,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:23:43,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:23:43,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:23:43,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:23:43,144 INFO L87 Difference]: Start difference. First operand 6996 states and 37977 transitions. Second operand has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 13 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:23:51,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:23:51,032 INFO L93 Difference]: Finished difference Result 11584 states and 57954 transitions. [2021-10-07 15:23:51,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-07 15:23:51,033 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 13 states have internal predecessors, (46), 0 states have call successors, (0), 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 25 [2021-10-07 15:23:51,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:23:51,085 INFO L225 Difference]: With dead ends: 11584 [2021-10-07 15:23:51,085 INFO L226 Difference]: Without dead ends: 11584 [2021-10-07 15:23:51,086 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1606.0ms TimeCoverageRelationStatistics Valid=138, Invalid=368, Unknown=0, NotChecked=0, Total=506 [2021-10-07 15:23:51,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11584 states. [2021-10-07 15:23:51,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11584 to 7570. [2021-10-07 15:23:51,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7570 states, 7569 states have (on average 5.501651473114018) internal successors, (41642), 7569 states have internal predecessors, (41642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:23:51,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7570 states to 7570 states and 41642 transitions. [2021-10-07 15:23:51,496 INFO L78 Accepts]: Start accepts. Automaton has 7570 states and 41642 transitions. Word has length 25 [2021-10-07 15:23:51,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:23:51,497 INFO L470 AbstractCegarLoop]: Abstraction has 7570 states and 41642 transitions. [2021-10-07 15:23:51,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 13 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:23:51,497 INFO L276 IsEmpty]: Start isEmpty. Operand 7570 states and 41642 transitions. [2021-10-07 15:23:51,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:23:51,519 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:23:51,519 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:23:51,532 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (49)] Forceful destruction successful, exit code 0 [2021-10-07 15:23:51,719 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 [2021-10-07 15:23:51,720 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:23:51,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:23:51,721 INFO L82 PathProgramCache]: Analyzing trace with hash 1303818364, now seen corresponding path program 14 times [2021-10-07 15:23:51,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:23:51,722 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1148610200] [2021-10-07 15:23:51,722 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:23:51,722 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:23:51,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:23:51,723 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) [2021-10-07 15:23:51,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2021-10-07 15:23:52,554 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:23:52,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:23:52,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 15:23:52,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:23:53,072 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:23:53,072 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:23:53,399 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:23:53,399 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:23:53,399 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1148610200] [2021-10-07 15:23:53,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1148610200] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:23:53,399 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:23:53,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-07 15:23:53,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302850000] [2021-10-07 15:23:53,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:23:53,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:23:53,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:23:53,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:23:53,401 INFO L87 Difference]: Start difference. First operand 7570 states and 41642 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:23:54,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:23:54,775 INFO L93 Difference]: Finished difference Result 8150 states and 43728 transitions. [2021-10-07 15:23:54,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-07 15:23:54,775 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 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 25 [2021-10-07 15:23:54,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:23:54,807 INFO L225 Difference]: With dead ends: 8150 [2021-10-07 15:23:54,808 INFO L226 Difference]: Without dead ends: 8120 [2021-10-07 15:23:54,808 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 324.0ms TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:23:54,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8120 states. [2021-10-07 15:23:55,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8120 to 7760. [2021-10-07 15:23:55,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7760 states, 7759 states have (on average 5.485242943678309) internal successors, (42560), 7759 states have internal predecessors, (42560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:23:55,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7760 states to 7760 states and 42560 transitions. [2021-10-07 15:23:55,183 INFO L78 Accepts]: Start accepts. Automaton has 7760 states and 42560 transitions. Word has length 25 [2021-10-07 15:23:55,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:23:55,183 INFO L470 AbstractCegarLoop]: Abstraction has 7760 states and 42560 transitions. [2021-10-07 15:23:55,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:23:55,184 INFO L276 IsEmpty]: Start isEmpty. Operand 7760 states and 42560 transitions. [2021-10-07 15:23:55,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:23:55,210 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:23:55,210 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:23:55,224 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (50)] Forceful destruction successful, exit code 0 [2021-10-07 15:23:55,410 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 [2021-10-07 15:23:55,411 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:23:55,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:23:55,412 INFO L82 PathProgramCache]: Analyzing trace with hash 1050613980, now seen corresponding path program 15 times [2021-10-07 15:23:55,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:23:55,413 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [305262448] [2021-10-07 15:23:55,413 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:23:55,414 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:23:55,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:23:55,415 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) [2021-10-07 15:23:55,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2021-10-07 15:23:56,335 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-07 15:23:56,336 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:23:56,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-07 15:23:56,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:23:56,779 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:23:56,779 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:23:58,015 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:23:58,016 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:23:58,016 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [305262448] [2021-10-07 15:23:58,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [305262448] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:23:58,016 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:23:58,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-07 15:23:58,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474824324] [2021-10-07 15:23:58,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:23:58,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:23:58,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:23:58,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:23:58,018 INFO L87 Difference]: Start difference. First operand 7760 states and 42560 transitions. Second operand has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 13 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:24:08,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:24:08,678 INFO L93 Difference]: Finished difference Result 12830 states and 65930 transitions. [2021-10-07 15:24:08,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-07 15:24:08,679 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 13 states have internal predecessors, (46), 0 states have call successors, (0), 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 25 [2021-10-07 15:24:08,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:24:08,767 INFO L225 Difference]: With dead ends: 12830 [2021-10-07 15:24:08,768 INFO L226 Difference]: Without dead ends: 12830 [2021-10-07 15:24:08,768 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 3085.7ms TimeCoverageRelationStatistics Valid=238, Invalid=518, Unknown=0, NotChecked=0, Total=756 [2021-10-07 15:24:08,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12830 states. [2021-10-07 15:24:09,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12830 to 8396. [2021-10-07 15:24:09,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8396 states, 8395 states have (on average 5.520309708159619) internal successors, (46343), 8395 states have internal predecessors, (46343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:24:09,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8396 states to 8396 states and 46343 transitions. [2021-10-07 15:24:09,099 INFO L78 Accepts]: Start accepts. Automaton has 8396 states and 46343 transitions. Word has length 25 [2021-10-07 15:24:09,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:24:09,100 INFO L470 AbstractCegarLoop]: Abstraction has 8396 states and 46343 transitions. [2021-10-07 15:24:09,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 13 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:24:09,100 INFO L276 IsEmpty]: Start isEmpty. Operand 8396 states and 46343 transitions. [2021-10-07 15:24:09,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:24:09,125 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:24:09,125 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:24:09,137 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (51)] Forceful destruction successful, exit code 0 [2021-10-07 15:24:09,325 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 [2021-10-07 15:24:09,326 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:24:09,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:24:09,327 INFO L82 PathProgramCache]: Analyzing trace with hash 1998090764, now seen corresponding path program 16 times [2021-10-07 15:24:09,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:24:09,327 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [806833017] [2021-10-07 15:24:09,328 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:24:09,328 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:24:09,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:24:09,330 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) [2021-10-07 15:24:09,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2021-10-07 15:24:10,140 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:24:10,140 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:24:10,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 15:24:10,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:24:10,518 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:24:10,519 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:24:11,575 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:24:11,576 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:24:11,576 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [806833017] [2021-10-07 15:24:11,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [806833017] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:24:11,577 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:24:11,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-07 15:24:11,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388709657] [2021-10-07 15:24:11,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:24:11,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:24:11,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:24:11,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:24:11,578 INFO L87 Difference]: Start difference. First operand 8396 states and 46343 transitions. Second operand has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 13 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:24:18,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:24:18,844 INFO L93 Difference]: Finished difference Result 13330 states and 67770 transitions. [2021-10-07 15:24:18,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-07 15:24:18,845 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 13 states have internal predecessors, (46), 0 states have call successors, (0), 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 25 [2021-10-07 15:24:18,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:24:18,909 INFO L225 Difference]: With dead ends: 13330 [2021-10-07 15:24:18,909 INFO L226 Difference]: Without dead ends: 13330 [2021-10-07 15:24:18,910 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 3196.8ms TimeCoverageRelationStatistics Valid=260, Invalid=862, Unknown=0, NotChecked=0, Total=1122 [2021-10-07 15:24:18,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13330 states. [2021-10-07 15:24:19,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13330 to 9148. [2021-10-07 15:24:19,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9148 states, 9147 states have (on average 5.530556466601071) internal successors, (50588), 9147 states have internal predecessors, (50588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:24:19,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9148 states to 9148 states and 50588 transitions. [2021-10-07 15:24:19,209 INFO L78 Accepts]: Start accepts. Automaton has 9148 states and 50588 transitions. Word has length 25 [2021-10-07 15:24:19,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:24:19,209 INFO L470 AbstractCegarLoop]: Abstraction has 9148 states and 50588 transitions. [2021-10-07 15:24:19,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 13 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:24:19,209 INFO L276 IsEmpty]: Start isEmpty. Operand 9148 states and 50588 transitions. [2021-10-07 15:24:19,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:24:19,235 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:24:19,235 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:24:19,247 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (52)] Forceful destruction successful, exit code 0 [2021-10-07 15:24:19,436 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 [2021-10-07 15:24:19,436 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:24:19,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:24:19,437 INFO L82 PathProgramCache]: Analyzing trace with hash 1997933340, now seen corresponding path program 14 times [2021-10-07 15:24:19,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:24:19,438 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [405464168] [2021-10-07 15:24:19,438 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:24:19,438 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:24:19,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:24:19,439 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) [2021-10-07 15:24:19,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2021-10-07 15:24:20,427 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:24:20,427 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:24:20,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 15:24:20,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:24:23,036 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:24:23,037 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:24:23,439 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:24:23,440 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:24:23,440 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [405464168] [2021-10-07 15:24:23,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [405464168] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:24:23,440 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:24:23,440 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-07 15:24:23,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622114466] [2021-10-07 15:24:23,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:24:23,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:24:23,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:24:23,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=96, Unknown=1, NotChecked=0, Total=132 [2021-10-07 15:24:23,442 INFO L87 Difference]: Start difference. First operand 9148 states and 50588 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:24:28,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:24:28,220 INFO L93 Difference]: Finished difference Result 9728 states and 52406 transitions. [2021-10-07 15:24:28,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-07 15:24:28,220 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 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 25 [2021-10-07 15:24:28,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:24:28,263 INFO L225 Difference]: With dead ends: 9728 [2021-10-07 15:24:28,263 INFO L226 Difference]: Without dead ends: 9678 [2021-10-07 15:24:28,263 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 6351.0ms TimeCoverageRelationStatistics Valid=42, Invalid=112, Unknown=2, NotChecked=0, Total=156 [2021-10-07 15:24:28,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9678 states. [2021-10-07 15:24:28,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9678 to 9134. [2021-10-07 15:24:28,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9134 states, 9133 states have (on average 5.530055841454067) internal successors, (50506), 9133 states have internal predecessors, (50506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:24:28,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9134 states to 9134 states and 50506 transitions. [2021-10-07 15:24:28,536 INFO L78 Accepts]: Start accepts. Automaton has 9134 states and 50506 transitions. Word has length 25 [2021-10-07 15:24:28,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:24:28,536 INFO L470 AbstractCegarLoop]: Abstraction has 9134 states and 50506 transitions. [2021-10-07 15:24:28,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:24:28,536 INFO L276 IsEmpty]: Start isEmpty. Operand 9134 states and 50506 transitions. [2021-10-07 15:24:28,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:24:28,562 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:24:28,562 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:24:28,575 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (53)] Forceful destruction successful, exit code 0 [2021-10-07 15:24:28,763 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 [2021-10-07 15:24:28,763 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:24:28,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:24:28,764 INFO L82 PathProgramCache]: Analyzing trace with hash -827601711, now seen corresponding path program 7 times [2021-10-07 15:24:28,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:24:28,765 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [873384110] [2021-10-07 15:24:28,765 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:24:28,765 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:24:28,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:24:28,767 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) [2021-10-07 15:24:28,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2021-10-07 15:24:29,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:24:29,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 15:24:29,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:24:30,312 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:24:30,313 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:24:30,700 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:24:30,701 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:24:30,701 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [873384110] [2021-10-07 15:24:30,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [873384110] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:24:30,701 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:24:30,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-07 15:24:30,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780150397] [2021-10-07 15:24:30,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:24:30,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:24:30,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:24:30,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:24:30,702 INFO L87 Difference]: Start difference. First operand 9134 states and 50506 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:24:31,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:24:31,362 INFO L93 Difference]: Finished difference Result 10500 states and 56260 transitions. [2021-10-07 15:24:31,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-07 15:24:31,363 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 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 25 [2021-10-07 15:24:31,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:24:31,413 INFO L225 Difference]: With dead ends: 10500 [2021-10-07 15:24:31,414 INFO L226 Difference]: Without dead ends: 10400 [2021-10-07 15:24:31,414 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 310.4ms TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:24:31,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10400 states. [2021-10-07 15:24:31,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10400 to 9388. [2021-10-07 15:24:31,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9388 states, 9387 states have (on average 5.549802918930435) internal successors, (52096), 9387 states have internal predecessors, (52096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:24:31,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9388 states to 9388 states and 52096 transitions. [2021-10-07 15:24:31,732 INFO L78 Accepts]: Start accepts. Automaton has 9388 states and 52096 transitions. Word has length 25 [2021-10-07 15:24:31,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:24:31,733 INFO L470 AbstractCegarLoop]: Abstraction has 9388 states and 52096 transitions. [2021-10-07 15:24:31,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:24:31,733 INFO L276 IsEmpty]: Start isEmpty. Operand 9388 states and 52096 transitions. [2021-10-07 15:24:31,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:24:31,834 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:24:31,834 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:24:31,846 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (54)] Ended with exit code 0 [2021-10-07 15:24:32,034 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 [2021-10-07 15:24:32,035 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:24:32,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:24:32,036 INFO L82 PathProgramCache]: Analyzing trace with hash -480632963, now seen corresponding path program 8 times [2021-10-07 15:24:32,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:24:32,037 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1937642221] [2021-10-07 15:24:32,037 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:24:32,037 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:24:32,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:24:32,039 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) [2021-10-07 15:24:32,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (55)] Waiting until timeout for monitored process [2021-10-07 15:24:32,915 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:24:32,916 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:24:32,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 15:24:32,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:24:33,529 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:24:33,529 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:24:33,979 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:24:33,979 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:24:33,979 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1937642221] [2021-10-07 15:24:33,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1937642221] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:24:33,979 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:24:33,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-07 15:24:33,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592365254] [2021-10-07 15:24:33,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:24:33,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:24:33,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:24:33,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:24:33,981 INFO L87 Difference]: Start difference. First operand 9388 states and 52096 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:24:34,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:24:34,929 INFO L93 Difference]: Finished difference Result 10642 states and 57324 transitions. [2021-10-07 15:24:34,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-07 15:24:34,929 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 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 25 [2021-10-07 15:24:34,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:24:34,974 INFO L225 Difference]: With dead ends: 10642 [2021-10-07 15:24:34,975 INFO L226 Difference]: Without dead ends: 10554 [2021-10-07 15:24:34,975 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 370.1ms TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:24:34,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10554 states. [2021-10-07 15:24:35,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10554 to 9494. [2021-10-07 15:24:35,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9494 states, 9493 states have (on average 5.580638365111135) internal successors, (52977), 9493 states have internal predecessors, (52977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:24:35,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9494 states to 9494 states and 52977 transitions. [2021-10-07 15:24:35,443 INFO L78 Accepts]: Start accepts. Automaton has 9494 states and 52977 transitions. Word has length 25 [2021-10-07 15:24:35,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:24:35,443 INFO L470 AbstractCegarLoop]: Abstraction has 9494 states and 52977 transitions. [2021-10-07 15:24:35,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:24:35,444 INFO L276 IsEmpty]: Start isEmpty. Operand 9494 states and 52977 transitions. [2021-10-07 15:24:35,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:24:35,471 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:24:35,471 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:24:35,484 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (55)] Forceful destruction successful, exit code 0 [2021-10-07 15:24:35,678 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 [2021-10-07 15:24:35,679 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:24:35,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:24:35,680 INFO L82 PathProgramCache]: Analyzing trace with hash 729116051, now seen corresponding path program 9 times [2021-10-07 15:24:35,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:24:35,681 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1216180828] [2021-10-07 15:24:35,681 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:24:35,681 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:24:35,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:24:35,683 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) [2021-10-07 15:24:35,683 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (56)] Waiting until timeout for monitored process [2021-10-07 15:24:36,664 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 15:24:36,664 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:24:36,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 15:24:36,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:24:37,251 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:24:37,252 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:24:37,638 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:24:37,639 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:24:37,639 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1216180828] [2021-10-07 15:24:37,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1216180828] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:24:37,639 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:24:37,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-07 15:24:37,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982737983] [2021-10-07 15:24:37,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:24:37,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:24:37,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:24:37,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:24:37,641 INFO L87 Difference]: Start difference. First operand 9494 states and 52977 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:24:38,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:24:38,271 INFO L93 Difference]: Finished difference Result 11296 states and 60686 transitions. [2021-10-07 15:24:38,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-07 15:24:38,271 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 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 25 [2021-10-07 15:24:38,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:24:38,324 INFO L225 Difference]: With dead ends: 11296 [2021-10-07 15:24:38,324 INFO L226 Difference]: Without dead ends: 11174 [2021-10-07 15:24:38,324 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 313.2ms TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:24:38,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11174 states. [2021-10-07 15:24:38,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11174 to 9686. [2021-10-07 15:24:38,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9686 states, 9685 states have (on average 5.6101187403200825) internal successors, (54334), 9685 states have internal predecessors, (54334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:24:38,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9686 states to 9686 states and 54334 transitions. [2021-10-07 15:24:38,784 INFO L78 Accepts]: Start accepts. Automaton has 9686 states and 54334 transitions. Word has length 25 [2021-10-07 15:24:38,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:24:38,785 INFO L470 AbstractCegarLoop]: Abstraction has 9686 states and 54334 transitions. [2021-10-07 15:24:38,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:24:38,785 INFO L276 IsEmpty]: Start isEmpty. Operand 9686 states and 54334 transitions. [2021-10-07 15:24:38,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:24:38,813 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:24:38,814 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:24:38,827 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (56)] Forceful destruction successful, exit code 0 [2021-10-07 15:24:39,014 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 [2021-10-07 15:24:39,015 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:24:39,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:24:39,016 INFO L82 PathProgramCache]: Analyzing trace with hash -11679341, now seen corresponding path program 10 times [2021-10-07 15:24:39,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:24:39,017 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [720338661] [2021-10-07 15:24:39,017 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:24:39,017 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:24:39,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:24:39,019 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) [2021-10-07 15:24:39,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (57)] Waiting until timeout for monitored process [2021-10-07 15:24:39,931 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:24:39,931 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:24:39,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 15:24:39,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:24:40,565 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:24:40,565 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:24:40,987 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:24:40,987 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:24:40,987 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [720338661] [2021-10-07 15:24:40,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [720338661] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:24:40,987 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:24:40,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-07 15:24:40,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732105433] [2021-10-07 15:24:40,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:24:40,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:24:40,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:24:40,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:24:40,989 INFO L87 Difference]: Start difference. First operand 9686 states and 54334 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:24:41,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:24:41,793 INFO L93 Difference]: Finished difference Result 10670 states and 58420 transitions. [2021-10-07 15:24:41,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-07 15:24:41,794 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 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 25 [2021-10-07 15:24:41,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:24:42,001 INFO L225 Difference]: With dead ends: 10670 [2021-10-07 15:24:42,002 INFO L226 Difference]: Without dead ends: 10588 [2021-10-07 15:24:42,002 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 316.5ms TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:24:42,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10588 states. [2021-10-07 15:24:42,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10588 to 9954. [2021-10-07 15:24:42,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9954 states, 9953 states have (on average 5.6130814829699585) internal successors, (55867), 9953 states have internal predecessors, (55867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:24:42,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9954 states to 9954 states and 55867 transitions. [2021-10-07 15:24:42,304 INFO L78 Accepts]: Start accepts. Automaton has 9954 states and 55867 transitions. Word has length 25 [2021-10-07 15:24:42,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:24:42,304 INFO L470 AbstractCegarLoop]: Abstraction has 9954 states and 55867 transitions. [2021-10-07 15:24:42,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:24:42,305 INFO L276 IsEmpty]: Start isEmpty. Operand 9954 states and 55867 transitions. [2021-10-07 15:24:42,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:24:42,334 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:24:42,334 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:24:42,350 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (57)] Forceful destruction successful, exit code 0 [2021-10-07 15:24:42,534 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 [2021-10-07 15:24:42,535 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:24:42,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:24:42,536 INFO L82 PathProgramCache]: Analyzing trace with hash 1138866579, now seen corresponding path program 11 times [2021-10-07 15:24:42,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:24:42,537 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1202137756] [2021-10-07 15:24:42,537 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:24:42,538 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:24:42,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:24:42,540 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) [2021-10-07 15:24:42,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (58)] Waiting until timeout for monitored process [2021-10-07 15:24:43,676 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-07 15:24:43,676 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:24:43,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 15:24:43,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:24:44,263 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:24:44,263 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:24:44,689 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:24:44,689 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:24:44,689 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1202137756] [2021-10-07 15:24:44,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1202137756] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:24:44,690 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:24:44,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-07 15:24:44,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766344218] [2021-10-07 15:24:44,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:24:44,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:24:44,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:24:44,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:24:44,691 INFO L87 Difference]: Start difference. First operand 9954 states and 55867 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:24:45,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:24:45,591 INFO L93 Difference]: Finished difference Result 11654 states and 63071 transitions. [2021-10-07 15:24:45,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-07 15:24:45,592 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 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 25 [2021-10-07 15:24:45,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:24:45,643 INFO L225 Difference]: With dead ends: 11654 [2021-10-07 15:24:45,643 INFO L226 Difference]: Without dead ends: 11548 [2021-10-07 15:24:45,643 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 340.3ms TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:24:45,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11548 states. [2021-10-07 15:24:46,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11548 to 10114. [2021-10-07 15:24:46,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10114 states, 10113 states have (on average 5.637298526648868) internal successors, (57010), 10113 states have internal predecessors, (57010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:24:46,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10114 states to 10114 states and 57010 transitions. [2021-10-07 15:24:46,081 INFO L78 Accepts]: Start accepts. Automaton has 10114 states and 57010 transitions. Word has length 25 [2021-10-07 15:24:46,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:24:46,081 INFO L470 AbstractCegarLoop]: Abstraction has 10114 states and 57010 transitions. [2021-10-07 15:24:46,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:24:46,081 INFO L276 IsEmpty]: Start isEmpty. Operand 10114 states and 57010 transitions. [2021-10-07 15:24:46,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:24:46,112 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:24:46,112 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:24:46,124 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (58)] Forceful destruction successful, exit code 0 [2021-10-07 15:24:46,312 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 [2021-10-07 15:24:46,313 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:24:46,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:24:46,314 INFO L82 PathProgramCache]: Analyzing trace with hash -797030699, now seen corresponding path program 12 times [2021-10-07 15:24:46,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:24:46,314 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1056700250] [2021-10-07 15:24:46,315 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:24:46,315 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:24:46,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:24:46,319 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) [2021-10-07 15:24:46,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (59)] Waiting until timeout for monitored process [2021-10-07 15:24:47,407 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-07 15:24:47,407 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:24:47,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 15:24:47,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:24:48,000 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:24:48,000 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:24:48,399 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:24:48,399 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:24:48,400 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1056700250] [2021-10-07 15:24:48,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1056700250] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:24:48,400 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:24:48,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-07 15:24:48,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143165088] [2021-10-07 15:24:48,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:24:48,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:24:48,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:24:48,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:24:48,401 INFO L87 Difference]: Start difference. First operand 10114 states and 57010 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:24:49,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:24:49,227 INFO L93 Difference]: Finished difference Result 11056 states and 60878 transitions. [2021-10-07 15:24:49,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-07 15:24:49,228 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 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 25 [2021-10-07 15:24:49,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:24:49,284 INFO L225 Difference]: With dead ends: 11056 [2021-10-07 15:24:49,284 INFO L226 Difference]: Without dead ends: 10976 [2021-10-07 15:24:49,284 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 322.9ms TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:24:49,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10976 states. [2021-10-07 15:24:49,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10976 to 10250. [2021-10-07 15:24:49,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10250 states, 10249 states have (on average 5.6465020977656355) internal successors, (57871), 10249 states have internal predecessors, (57871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:24:49,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10250 states to 10250 states and 57871 transitions. [2021-10-07 15:24:49,666 INFO L78 Accepts]: Start accepts. Automaton has 10250 states and 57871 transitions. Word has length 25 [2021-10-07 15:24:49,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:24:49,666 INFO L470 AbstractCegarLoop]: Abstraction has 10250 states and 57871 transitions. [2021-10-07 15:24:49,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:24:49,666 INFO L276 IsEmpty]: Start isEmpty. Operand 10250 states and 57871 transitions. [2021-10-07 15:24:49,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:24:49,697 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:24:49,697 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:24:49,712 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (59)] Ended with exit code 0 [2021-10-07 15:24:49,909 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 [2021-10-07 15:24:49,910 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:24:49,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:24:49,911 INFO L82 PathProgramCache]: Analyzing trace with hash -1493521596, now seen corresponding path program 15 times [2021-10-07 15:24:49,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:24:49,912 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1477111185] [2021-10-07 15:24:49,912 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:24:49,912 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:24:49,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:24:49,914 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) [2021-10-07 15:24:49,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (60)] Waiting until timeout for monitored process [2021-10-07 15:24:51,135 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-07 15:24:51,135 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:24:51,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 15:24:51,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:24:53,723 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:24:53,723 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:24:54,044 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:24:54,044 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:24:54,045 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1477111185] [2021-10-07 15:24:54,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1477111185] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:24:54,045 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:24:54,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-07 15:24:54,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131820987] [2021-10-07 15:24:54,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:24:54,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:24:54,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:24:54,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=99, Unknown=1, NotChecked=0, Total=132 [2021-10-07 15:24:54,046 INFO L87 Difference]: Start difference. First operand 10250 states and 57871 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:25:04,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:25:04,957 INFO L93 Difference]: Finished difference Result 10954 states and 60354 transitions. [2021-10-07 15:25:04,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-07 15:25:04,958 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 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 25 [2021-10-07 15:25:04,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:25:05,006 INFO L225 Difference]: With dead ends: 10954 [2021-10-07 15:25:05,007 INFO L226 Difference]: Without dead ends: 10904 [2021-10-07 15:25:05,007 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 2377.3ms TimeCoverageRelationStatistics Valid=38, Invalid=117, Unknown=1, NotChecked=0, Total=156 [2021-10-07 15:25:05,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10904 states. [2021-10-07 15:25:05,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10904 to 10400. [2021-10-07 15:25:05,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10400 states, 10399 states have (on average 5.632272333878258) internal successors, (58570), 10399 states have internal predecessors, (58570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:25:05,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10400 states to 10400 states and 58570 transitions. [2021-10-07 15:25:05,490 INFO L78 Accepts]: Start accepts. Automaton has 10400 states and 58570 transitions. Word has length 25 [2021-10-07 15:25:05,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:25:05,490 INFO L470 AbstractCegarLoop]: Abstraction has 10400 states and 58570 transitions. [2021-10-07 15:25:05,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:25:05,490 INFO L276 IsEmpty]: Start isEmpty. Operand 10400 states and 58570 transitions. [2021-10-07 15:25:05,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:25:05,520 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:25:05,520 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:25:05,534 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (60)] Ended with exit code 0 [2021-10-07 15:25:05,727 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 [2021-10-07 15:25:05,728 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:25:05,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:25:05,729 INFO L82 PathProgramCache]: Analyzing trace with hash 548231165, now seen corresponding path program 13 times [2021-10-07 15:25:05,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:25:05,729 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1350402239] [2021-10-07 15:25:05,730 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:25:05,730 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:25:05,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:25:05,731 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) [2021-10-07 15:25:05,732 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (61)] Waiting until timeout for monitored process [2021-10-07 15:25:06,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:25:06,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 15:25:06,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:25:07,311 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:25:07,311 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:25:07,724 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:25:07,724 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:25:07,724 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1350402239] [2021-10-07 15:25:07,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1350402239] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:25:07,725 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:25:07,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-07 15:25:07,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787743312] [2021-10-07 15:25:07,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:25:07,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:25:07,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:25:07,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:25:07,726 INFO L87 Difference]: Start difference. First operand 10400 states and 58570 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:25:08,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:25:08,533 INFO L93 Difference]: Finished difference Result 12470 states and 67701 transitions. [2021-10-07 15:25:08,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-07 15:25:08,534 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 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 25 [2021-10-07 15:25:08,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:25:08,591 INFO L225 Difference]: With dead ends: 12470 [2021-10-07 15:25:08,592 INFO L226 Difference]: Without dead ends: 12352 [2021-10-07 15:25:08,592 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 326.4ms TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:25:08,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12352 states. [2021-10-07 15:25:09,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12352 to 10610. [2021-10-07 15:25:09,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10610 states, 10609 states have (on average 5.657931944575361) internal successors, (60025), 10609 states have internal predecessors, (60025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:25:09,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10610 states to 10610 states and 60025 transitions. [2021-10-07 15:25:09,086 INFO L78 Accepts]: Start accepts. Automaton has 10610 states and 60025 transitions. Word has length 25 [2021-10-07 15:25:09,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:25:09,086 INFO L470 AbstractCegarLoop]: Abstraction has 10610 states and 60025 transitions. [2021-10-07 15:25:09,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:25:09,086 INFO L276 IsEmpty]: Start isEmpty. Operand 10610 states and 60025 transitions. [2021-10-07 15:25:09,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:25:09,119 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:25:09,119 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:25:09,132 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (61)] Forceful destruction successful, exit code 0 [2021-10-07 15:25:09,320 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 [2021-10-07 15:25:09,320 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:25:09,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:25:09,322 INFO L82 PathProgramCache]: Analyzing trace with hash 608577811, now seen corresponding path program 14 times [2021-10-07 15:25:09,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:25:09,322 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1876072058] [2021-10-07 15:25:09,323 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:25:09,323 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:25:09,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:25:09,324 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) [2021-10-07 15:25:09,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (62)] Waiting until timeout for monitored process [2021-10-07 15:25:10,517 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:25:10,517 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:25:10,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 15:25:10,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:25:11,137 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:25:11,138 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:25:11,672 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:25:11,673 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:25:11,673 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1876072058] [2021-10-07 15:25:11,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1876072058] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:25:11,673 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:25:11,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-07 15:25:11,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083218842] [2021-10-07 15:25:11,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:25:11,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:25:11,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:25:11,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:25:11,674 INFO L87 Difference]: Start difference. First operand 10610 states and 60025 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:25:12,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:25:12,531 INFO L93 Difference]: Finished difference Result 12732 states and 69392 transitions. [2021-10-07 15:25:12,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-07 15:25:12,531 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 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 25 [2021-10-07 15:25:12,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:25:12,590 INFO L225 Difference]: With dead ends: 12732 [2021-10-07 15:25:12,590 INFO L226 Difference]: Without dead ends: 12634 [2021-10-07 15:25:12,590 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 329.9ms TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:25:12,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12634 states. [2021-10-07 15:25:12,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12634 to 10750. [2021-10-07 15:25:12,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10750 states, 10749 states have (on average 5.685086984835799) internal successors, (61109), 10749 states have internal predecessors, (61109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:25:13,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10750 states to 10750 states and 61109 transitions. [2021-10-07 15:25:13,173 INFO L78 Accepts]: Start accepts. Automaton has 10750 states and 61109 transitions. Word has length 25 [2021-10-07 15:25:13,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:25:13,174 INFO L470 AbstractCegarLoop]: Abstraction has 10750 states and 61109 transitions. [2021-10-07 15:25:13,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:25:13,174 INFO L276 IsEmpty]: Start isEmpty. Operand 10750 states and 61109 transitions. [2021-10-07 15:25:13,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:25:13,221 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:25:13,221 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:25:13,236 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (62)] Forceful destruction successful, exit code 0 [2021-10-07 15:25:13,421 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 [2021-10-07 15:25:13,422 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:25:13,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:25:13,423 INFO L82 PathProgramCache]: Analyzing trace with hash 71564471, now seen corresponding path program 15 times [2021-10-07 15:25:13,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:25:13,424 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [233743632] [2021-10-07 15:25:13,424 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:25:13,424 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:25:13,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:25:13,425 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) [2021-10-07 15:25:13,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (63)] Waiting until timeout for monitored process [2021-10-07 15:25:14,655 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-07 15:25:14,655 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:25:14,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 15:25:14,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:25:15,373 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:25:15,373 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:25:15,778 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:25:15,778 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:25:15,778 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [233743632] [2021-10-07 15:25:15,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [233743632] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:25:15,779 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:25:15,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-07 15:25:15,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877029465] [2021-10-07 15:25:15,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:25:15,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:25:15,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:25:15,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:25:15,780 INFO L87 Difference]: Start difference. First operand 10750 states and 61109 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:25:16,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:25:16,683 INFO L93 Difference]: Finished difference Result 12702 states and 69617 transitions. [2021-10-07 15:25:16,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-07 15:25:16,683 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 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 25 [2021-10-07 15:25:16,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:25:16,780 INFO L225 Difference]: With dead ends: 12702 [2021-10-07 15:25:16,780 INFO L226 Difference]: Without dead ends: 12588 [2021-10-07 15:25:16,780 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 327.7ms TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:25:16,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12588 states. [2021-10-07 15:25:17,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12588 to 10932. [2021-10-07 15:25:17,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10932 states, 10931 states have (on average 5.704052694172537) internal successors, (62351), 10931 states have internal predecessors, (62351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:25:17,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10932 states to 10932 states and 62351 transitions. [2021-10-07 15:25:17,274 INFO L78 Accepts]: Start accepts. Automaton has 10932 states and 62351 transitions. Word has length 25 [2021-10-07 15:25:17,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:25:17,274 INFO L470 AbstractCegarLoop]: Abstraction has 10932 states and 62351 transitions. [2021-10-07 15:25:17,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:25:17,274 INFO L276 IsEmpty]: Start isEmpty. Operand 10932 states and 62351 transitions. [2021-10-07 15:25:17,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:25:17,306 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:25:17,306 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:25:17,320 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (63)] Forceful destruction successful, exit code 0 [2021-10-07 15:25:17,513 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 [2021-10-07 15:25:17,514 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:25:17,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:25:17,515 INFO L82 PathProgramCache]: Analyzing trace with hash -2085320443, now seen corresponding path program 16 times [2021-10-07 15:25:17,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:25:17,516 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [794926025] [2021-10-07 15:25:17,516 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:25:17,516 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:25:17,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:25:17,518 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) [2021-10-07 15:25:17,519 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (64)] Waiting until timeout for monitored process [2021-10-07 15:25:18,732 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:25:18,732 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:25:18,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 15:25:18,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:25:19,335 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:25:19,335 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:25:19,751 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:25:19,751 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:25:19,751 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [794926025] [2021-10-07 15:25:19,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [794926025] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:25:19,752 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:25:19,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-07 15:25:19,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543054878] [2021-10-07 15:25:19,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:25:19,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:25:19,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:25:19,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:25:19,753 INFO L87 Difference]: Start difference. First operand 10932 states and 62351 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:25:20,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:25:20,676 INFO L93 Difference]: Finished difference Result 11956 states and 66331 transitions. [2021-10-07 15:25:20,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-07 15:25:20,677 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 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 25 [2021-10-07 15:25:20,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:25:20,736 INFO L225 Difference]: With dead ends: 11956 [2021-10-07 15:25:20,736 INFO L226 Difference]: Without dead ends: 11878 [2021-10-07 15:25:20,736 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 329.4ms TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:25:20,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11878 states. [2021-10-07 15:25:21,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11878 to 10916. [2021-10-07 15:25:21,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10916 states, 10915 states have (on average 5.7007787448465415) internal successors, (62224), 10915 states have internal predecessors, (62224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:25:21,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10916 states to 10916 states and 62224 transitions. [2021-10-07 15:25:21,224 INFO L78 Accepts]: Start accepts. Automaton has 10916 states and 62224 transitions. Word has length 25 [2021-10-07 15:25:21,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:25:21,224 INFO L470 AbstractCegarLoop]: Abstraction has 10916 states and 62224 transitions. [2021-10-07 15:25:21,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:25:21,224 INFO L276 IsEmpty]: Start isEmpty. Operand 10916 states and 62224 transitions. [2021-10-07 15:25:21,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:25:21,262 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:25:21,262 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:25:21,276 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (64)] Forceful destruction successful, exit code 0 [2021-10-07 15:25:21,463 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 [2021-10-07 15:25:21,463 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:25:21,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:25:21,466 INFO L82 PathProgramCache]: Analyzing trace with hash 2098582681, now seen corresponding path program 17 times [2021-10-07 15:25:21,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:25:21,466 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [495660556] [2021-10-07 15:25:21,466 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:25:21,467 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:25:21,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:25:21,468 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) [2021-10-07 15:25:21,469 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (65)] Waiting until timeout for monitored process [2021-10-07 15:25:22,790 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-07 15:25:22,790 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:25:22,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 15:25:22,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:25:23,420 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:25:23,420 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:25:23,833 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:25:23,833 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:25:23,834 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [495660556] [2021-10-07 15:25:23,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [495660556] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:25:23,834 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:25:23,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-07 15:25:23,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467881725] [2021-10-07 15:25:23,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:25:23,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:25:23,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:25:23,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:25:23,837 INFO L87 Difference]: Start difference. First operand 10916 states and 62224 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:25:24,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:25:24,822 INFO L93 Difference]: Finished difference Result 12938 states and 71100 transitions. [2021-10-07 15:25:24,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-07 15:25:24,823 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 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 25 [2021-10-07 15:25:24,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:25:24,901 INFO L225 Difference]: With dead ends: 12938 [2021-10-07 15:25:24,901 INFO L226 Difference]: Without dead ends: 12858 [2021-10-07 15:25:24,901 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 323.0ms TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:25:24,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12858 states. [2021-10-07 15:25:25,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12858 to 11036. [2021-10-07 15:25:25,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11036 states, 11035 states have (on average 5.724150430448573) internal successors, (63166), 11035 states have internal predecessors, (63166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:25:25,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11036 states to 11036 states and 63166 transitions. [2021-10-07 15:25:25,379 INFO L78 Accepts]: Start accepts. Automaton has 11036 states and 63166 transitions. Word has length 25 [2021-10-07 15:25:25,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:25:25,380 INFO L470 AbstractCegarLoop]: Abstraction has 11036 states and 63166 transitions. [2021-10-07 15:25:25,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:25:25,380 INFO L276 IsEmpty]: Start isEmpty. Operand 11036 states and 63166 transitions. [2021-10-07 15:25:25,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-07 15:25:25,417 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:25:25,417 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:25:25,433 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (65)] Forceful destruction successful, exit code 0 [2021-10-07 15:25:25,622 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 [2021-10-07 15:25:25,623 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:25:25,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:25:25,623 INFO L82 PathProgramCache]: Analyzing trace with hash -902756182, now seen corresponding path program 16 times [2021-10-07 15:25:25,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:25:25,624 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [825888678] [2021-10-07 15:25:25,624 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:25:25,625 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:25:25,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:25:25,626 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) [2021-10-07 15:25:25,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (66)] Waiting until timeout for monitored process [2021-10-07 15:25:26,811 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:25:26,811 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:25:26,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-07 15:25:26,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:25:27,113 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:25:27,114 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:25:27,531 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:25:27,531 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:25:27,531 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [825888678] [2021-10-07 15:25:27,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [825888678] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:25:27,532 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:25:27,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-10-07 15:25:27,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477587931] [2021-10-07 15:25:27,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-07 15:25:27,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:25:27,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-07 15:25:27,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2021-10-07 15:25:27,533 INFO L87 Difference]: Start difference. First operand 11036 states and 63166 transitions. Second operand has 16 states, 16 states have (on average 2.375) internal successors, (38), 15 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) [2021-10-07 15:25:30,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:25:30,323 INFO L93 Difference]: Finished difference Result 21444 states and 112701 transitions. [2021-10-07 15:25:30,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-07 15:25:30,324 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.375) internal successors, (38), 15 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 26 [2021-10-07 15:25:30,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:25:30,427 INFO L225 Difference]: With dead ends: 21444 [2021-10-07 15:25:30,427 INFO L226 Difference]: Without dead ends: 21444 [2021-10-07 15:25:30,427 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 1496.4ms TimeCoverageRelationStatistics Valid=171, Invalid=821, Unknown=0, NotChecked=0, Total=992 [2021-10-07 15:25:30,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21444 states. [2021-10-07 15:25:31,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21444 to 12500. [2021-10-07 15:25:31,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12500 states, 12499 states have (on average 5.713337066965357) internal successors, (71411), 12499 states have internal predecessors, (71411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:25:31,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12500 states to 12500 states and 71411 transitions. [2021-10-07 15:25:31,276 INFO L78 Accepts]: Start accepts. Automaton has 12500 states and 71411 transitions. Word has length 26 [2021-10-07 15:25:31,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:25:31,276 INFO L470 AbstractCegarLoop]: Abstraction has 12500 states and 71411 transitions. [2021-10-07 15:25:31,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.375) internal successors, (38), 15 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) [2021-10-07 15:25:31,276 INFO L276 IsEmpty]: Start isEmpty. Operand 12500 states and 71411 transitions. [2021-10-07 15:25:31,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-07 15:25:31,314 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:25:31,315 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:25:31,328 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (66)] Ended with exit code 0 [2021-10-07 15:25:31,515 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 [2021-10-07 15:25:31,515 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:25:31,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:25:31,516 INFO L82 PathProgramCache]: Analyzing trace with hash 1124832149, now seen corresponding path program 17 times [2021-10-07 15:25:31,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:25:31,517 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2005344046] [2021-10-07 15:25:31,517 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:25:31,518 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:25:31,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:25:31,519 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) [2021-10-07 15:25:31,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (67)] Waiting until timeout for monitored process [2021-10-07 15:25:32,680 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-07 15:25:32,680 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:25:32,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-07 15:25:32,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:25:32,921 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:25:32,922 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:25:33,352 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:25:33,352 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:25:33,353 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2005344046] [2021-10-07 15:25:33,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2005344046] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:25:33,353 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:25:33,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-10-07 15:25:33,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325760464] [2021-10-07 15:25:33,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-07 15:25:33,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:25:33,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-07 15:25:33,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-10-07 15:25:33,354 INFO L87 Difference]: Start difference. First operand 12500 states and 71411 transitions. Second operand has 15 states, 15 states have (on average 2.533333333333333) 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) [2021-10-07 15:25:37,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:25:37,788 INFO L93 Difference]: Finished difference Result 20016 states and 105817 transitions. [2021-10-07 15:25:37,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-07 15:25:37,789 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.533333333333333) 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 26 [2021-10-07 15:25:37,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:25:37,886 INFO L225 Difference]: With dead ends: 20016 [2021-10-07 15:25:37,886 INFO L226 Difference]: Without dead ends: 19974 [2021-10-07 15:25:37,886 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 1155.4ms TimeCoverageRelationStatistics Valid=125, Invalid=687, Unknown=0, NotChecked=0, Total=812 [2021-10-07 15:25:37,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19974 states. [2021-10-07 15:25:38,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19974 to 13226. [2021-10-07 15:25:38,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13226 states, 13225 states have (on average 5.645822306238185) internal successors, (74666), 13225 states have internal predecessors, (74666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:25:38,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13226 states to 13226 states and 74666 transitions. [2021-10-07 15:25:38,494 INFO L78 Accepts]: Start accepts. Automaton has 13226 states and 74666 transitions. Word has length 26 [2021-10-07 15:25:38,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:25:38,494 INFO L470 AbstractCegarLoop]: Abstraction has 13226 states and 74666 transitions. [2021-10-07 15:25:38,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.533333333333333) 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) [2021-10-07 15:25:38,494 INFO L276 IsEmpty]: Start isEmpty. Operand 13226 states and 74666 transitions. [2021-10-07 15:25:38,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-07 15:25:38,537 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:25:38,537 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:25:38,553 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (67)] Forceful destruction successful, exit code 0 [2021-10-07 15:25:38,744 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 [2021-10-07 15:25:38,745 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:25:38,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:25:38,745 INFO L82 PathProgramCache]: Analyzing trace with hash 34880404, now seen corresponding path program 18 times [2021-10-07 15:25:38,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:25:38,746 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1577155418] [2021-10-07 15:25:38,746 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:25:38,746 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:25:38,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:25:38,748 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) [2021-10-07 15:25:38,751 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (68)] Waiting until timeout for monitored process [2021-10-07 15:25:40,396 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-07 15:25:40,396 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:25:40,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-07 15:25:40,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:25:41,798 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:25:41,798 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:25:42,285 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:25:42,286 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:25:42,286 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1577155418] [2021-10-07 15:25:42,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1577155418] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:25:42,286 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:25:42,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-10-07 15:25:42,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249394212] [2021-10-07 15:25:42,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-07 15:25:42,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:25:42,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-07 15:25:42,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2021-10-07 15:25:42,288 INFO L87 Difference]: Start difference. First operand 13226 states and 74666 transitions. Second operand has 16 states, 16 states have (on average 2.375) internal successors, (38), 15 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) [2021-10-07 15:25:51,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:25:51,638 INFO L93 Difference]: Finished difference Result 28922 states and 151405 transitions. [2021-10-07 15:25:51,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-07 15:25:51,639 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.375) internal successors, (38), 15 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 26 [2021-10-07 15:25:51,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:25:51,961 INFO L225 Difference]: With dead ends: 28922 [2021-10-07 15:25:51,961 INFO L226 Difference]: Without dead ends: 28922 [2021-10-07 15:25:51,962 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 2877.7ms TimeCoverageRelationStatistics Valid=161, Invalid=651, Unknown=0, NotChecked=0, Total=812 [2021-10-07 15:25:51,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28922 states. [2021-10-07 15:25:52,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28922 to 15144. [2021-10-07 15:25:52,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15144 states, 15143 states have (on average 5.7887472759690946) internal successors, (87659), 15143 states have internal predecessors, (87659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:25:52,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15144 states to 15144 states and 87659 transitions. [2021-10-07 15:25:52,920 INFO L78 Accepts]: Start accepts. Automaton has 15144 states and 87659 transitions. Word has length 26 [2021-10-07 15:25:52,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:25:52,920 INFO L470 AbstractCegarLoop]: Abstraction has 15144 states and 87659 transitions. [2021-10-07 15:25:52,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.375) internal successors, (38), 15 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) [2021-10-07 15:25:52,921 INFO L276 IsEmpty]: Start isEmpty. Operand 15144 states and 87659 transitions. [2021-10-07 15:25:52,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-07 15:25:52,973 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:25:52,973 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:25:52,989 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (68)] Forceful destruction successful, exit code 0 [2021-10-07 15:25:53,179 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 [2021-10-07 15:25:53,180 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:25:53,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:25:53,181 INFO L82 PathProgramCache]: Analyzing trace with hash -1892326997, now seen corresponding path program 19 times [2021-10-07 15:25:53,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:25:53,182 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1792510902] [2021-10-07 15:25:53,182 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:25:53,182 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:25:53,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:25:53,184 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) [2021-10-07 15:25:53,186 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (69)] Waiting until timeout for monitored process [2021-10-07 15:25:54,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:25:54,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 15:25:54,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:25:54,913 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:25:54,913 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:25:55,221 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:25:55,222 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:25:55,222 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1792510902] [2021-10-07 15:25:55,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1792510902] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:25:55,222 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:25:55,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-07 15:25:55,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317941845] [2021-10-07 15:25:55,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:25:55,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:25:55,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:25:55,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:25:55,223 INFO L87 Difference]: Start difference. First operand 15144 states and 87659 transitions. Second operand has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 13 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) [2021-10-07 15:26:34,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:26:34,766 INFO L93 Difference]: Finished difference Result 25508 states and 136135 transitions. [2021-10-07 15:26:34,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-07 15:26:34,767 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 13 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 26 [2021-10-07 15:26:34,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:26:34,967 INFO L225 Difference]: With dead ends: 25508 [2021-10-07 15:26:34,967 INFO L226 Difference]: Without dead ends: 25452 [2021-10-07 15:26:34,968 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 3310.2ms TimeCoverageRelationStatistics Valid=100, Invalid=499, Unknown=1, NotChecked=0, Total=600 [2021-10-07 15:26:35,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25452 states. [2021-10-07 15:26:35,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25452 to 16330. [2021-10-07 15:26:35,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16330 states, 16329 states have (on average 5.850082674995407) internal successors, (95526), 16329 states have internal predecessors, (95526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:26:35,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16330 states to 16330 states and 95526 transitions. [2021-10-07 15:26:35,878 INFO L78 Accepts]: Start accepts. Automaton has 16330 states and 95526 transitions. Word has length 26 [2021-10-07 15:26:35,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:26:35,879 INFO L470 AbstractCegarLoop]: Abstraction has 16330 states and 95526 transitions. [2021-10-07 15:26:35,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 13 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) [2021-10-07 15:26:35,879 INFO L276 IsEmpty]: Start isEmpty. Operand 16330 states and 95526 transitions. [2021-10-07 15:26:35,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-07 15:26:35,934 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:26:35,934 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:26:35,948 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (69)] Ended with exit code 0 [2021-10-07 15:26:36,135 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 [2021-10-07 15:26:36,135 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:26:36,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:26:36,136 INFO L82 PathProgramCache]: Analyzing trace with hash 356278434, now seen corresponding path program 20 times [2021-10-07 15:26:36,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:26:36,137 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [659679110] [2021-10-07 15:26:36,137 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:26:36,137 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:26:36,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:26:36,138 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) [2021-10-07 15:26:36,139 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (70)] Waiting until timeout for monitored process [2021-10-07 15:26:37,678 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:26:37,679 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:26:37,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 15:26:37,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:26:37,955 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:26:37,955 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:26:38,236 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:26:38,236 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:26:38,236 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [659679110] [2021-10-07 15:26:38,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [659679110] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:26:38,236 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:26:38,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-07 15:26:38,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233596842] [2021-10-07 15:26:38,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:26:38,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:26:38,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:26:38,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:26:38,238 INFO L87 Difference]: Start difference. First operand 16330 states and 95526 transitions. Second operand has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 13 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) [2021-10-07 15:26:56,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:26:56,241 INFO L93 Difference]: Finished difference Result 31846 states and 168088 transitions. [2021-10-07 15:26:56,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-07 15:26:56,242 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 13 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 26 [2021-10-07 15:26:56,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:26:56,550 INFO L225 Difference]: With dead ends: 31846 [2021-10-07 15:26:56,551 INFO L226 Difference]: Without dead ends: 31846 [2021-10-07 15:26:56,551 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 2034.8ms TimeCoverageRelationStatistics Valid=162, Invalid=768, Unknown=0, NotChecked=0, Total=930 [2021-10-07 15:26:56,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31846 states. [2021-10-07 15:26:57,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31846 to 17736. [2021-10-07 15:26:57,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17736 states, 17735 states have (on average 5.898280236819848) internal successors, (104606), 17735 states have internal predecessors, (104606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:26:57,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17736 states to 17736 states and 104606 transitions. [2021-10-07 15:26:57,673 INFO L78 Accepts]: Start accepts. Automaton has 17736 states and 104606 transitions. Word has length 26 [2021-10-07 15:26:57,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:26:57,674 INFO L470 AbstractCegarLoop]: Abstraction has 17736 states and 104606 transitions. [2021-10-07 15:26:57,674 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 13 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) [2021-10-07 15:26:57,674 INFO L276 IsEmpty]: Start isEmpty. Operand 17736 states and 104606 transitions. [2021-10-07 15:26:57,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-07 15:26:57,754 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:26:57,755 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:26:57,773 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (70)] Forceful destruction successful, exit code 0 [2021-10-07 15:26:57,968 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 [2021-10-07 15:26:57,969 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:26:57,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:26:57,969 INFO L82 PathProgramCache]: Analyzing trace with hash 542453827, now seen corresponding path program 21 times [2021-10-07 15:26:57,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:26:57,970 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [856792294] [2021-10-07 15:26:57,970 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:26:57,970 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:26:57,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:26:57,971 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) [2021-10-07 15:26:57,996 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (71)] Waiting until timeout for monitored process [2021-10-07 15:26:59,567 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-07 15:26:59,567 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:26:59,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 15:26:59,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:26:59,835 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:26:59,835 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:27:00,114 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:27:00,115 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:27:00,115 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [856792294] [2021-10-07 15:27:00,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [856792294] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:27:00,115 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:27:00,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-07 15:27:00,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031065708] [2021-10-07 15:27:00,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:27:00,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:27:00,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:27:00,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:27:00,117 INFO L87 Difference]: Start difference. First operand 17736 states and 104606 transitions. Second operand has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 13 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) [2021-10-07 15:27:02,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:27:02,302 INFO L93 Difference]: Finished difference Result 27070 states and 146253 transitions. [2021-10-07 15:27:02,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-07 15:27:02,303 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 13 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 26 [2021-10-07 15:27:02,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:27:02,575 INFO L225 Difference]: With dead ends: 27070 [2021-10-07 15:27:02,575 INFO L226 Difference]: Without dead ends: 27034 [2021-10-07 15:27:02,576 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 628.9ms TimeCoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2021-10-07 15:27:02,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27034 states. [2021-10-07 15:27:03,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27034 to 17762. [2021-10-07 15:27:03,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17762 states, 17761 states have (on average 5.891954281853499) internal successors, (104647), 17761 states have internal predecessors, (104647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:27:03,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17762 states to 17762 states and 104647 transitions. [2021-10-07 15:27:03,518 INFO L78 Accepts]: Start accepts. Automaton has 17762 states and 104647 transitions. Word has length 26 [2021-10-07 15:27:03,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:27:03,519 INFO L470 AbstractCegarLoop]: Abstraction has 17762 states and 104647 transitions. [2021-10-07 15:27:03,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 13 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) [2021-10-07 15:27:03,519 INFO L276 IsEmpty]: Start isEmpty. Operand 17762 states and 104647 transitions. [2021-10-07 15:27:03,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-07 15:27:03,765 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:27:03,765 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:27:03,784 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (71)] Forceful destruction successful, exit code 0 [2021-10-07 15:27:03,979 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 [2021-10-07 15:27:03,981 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:27:03,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:27:03,982 INFO L82 PathProgramCache]: Analyzing trace with hash -348836181, now seen corresponding path program 22 times [2021-10-07 15:27:03,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:27:03,983 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [757375403] [2021-10-07 15:27:03,983 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:27:03,983 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:27:03,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:27:03,984 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) [2021-10-07 15:27:03,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (72)] Waiting until timeout for monitored process [2021-10-07 15:27:05,249 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:27:05,249 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:27:05,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 15:27:05,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:27:05,493 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:27:05,494 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:27:05,797 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:27:05,798 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:27:05,798 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [757375403] [2021-10-07 15:27:05,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [757375403] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:27:05,798 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:27:05,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-07 15:27:05,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242233358] [2021-10-07 15:27:05,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:27:05,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:27:05,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:27:05,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:27:05,800 INFO L87 Difference]: Start difference. First operand 17762 states and 104647 transitions. Second operand has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 13 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) [2021-10-07 15:27:09,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:27:09,504 INFO L93 Difference]: Finished difference Result 28408 states and 153508 transitions. [2021-10-07 15:27:09,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-07 15:27:09,505 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 13 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 26 [2021-10-07 15:27:09,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:27:09,790 INFO L225 Difference]: With dead ends: 28408 [2021-10-07 15:27:09,790 INFO L226 Difference]: Without dead ends: 28408 [2021-10-07 15:27:09,790 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 454.4ms TimeCoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2021-10-07 15:27:09,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28408 states. [2021-10-07 15:27:10,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28408 to 17618. [2021-10-07 15:27:10,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17618 states, 17617 states have (on average 5.87966169041267) internal successors, (103582), 17617 states have internal predecessors, (103582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:27:10,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17618 states to 17618 states and 103582 transitions. [2021-10-07 15:27:10,954 INFO L78 Accepts]: Start accepts. Automaton has 17618 states and 103582 transitions. Word has length 26 [2021-10-07 15:27:10,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:27:10,954 INFO L470 AbstractCegarLoop]: Abstraction has 17618 states and 103582 transitions. [2021-10-07 15:27:10,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 13 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) [2021-10-07 15:27:10,955 INFO L276 IsEmpty]: Start isEmpty. Operand 17618 states and 103582 transitions. [2021-10-07 15:27:11,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-07 15:27:11,041 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:27:11,041 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:27:11,062 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (72)] Forceful destruction successful, exit code 0 [2021-10-07 15:27:11,256 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 [2021-10-07 15:27:11,257 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:27:11,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:27:11,258 INFO L82 PathProgramCache]: Analyzing trace with hash -380778180, now seen corresponding path program 23 times [2021-10-07 15:27:11,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:27:11,258 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [160892273] [2021-10-07 15:27:11,258 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:27:11,259 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:27:11,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:27:11,260 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) [2021-10-07 15:27:11,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (73)] Waiting until timeout for monitored process [2021-10-07 15:27:12,757 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-07 15:27:12,757 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:27:12,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-07 15:27:12,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:27:13,238 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:27:13,239 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:27:14,005 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:27:14,006 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:27:14,006 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [160892273] [2021-10-07 15:27:14,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [160892273] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:27:14,006 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:27:14,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-10-07 15:27:14,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593831447] [2021-10-07 15:27:14,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-07 15:27:14,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:27:14,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-07 15:27:14,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2021-10-07 15:27:14,008 INFO L87 Difference]: Start difference. First operand 17618 states and 103582 transitions. Second operand has 16 states, 16 states have (on average 2.375) internal successors, (38), 15 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) [2021-10-07 15:27:23,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:27:23,019 INFO L93 Difference]: Finished difference Result 45226 states and 240337 transitions. [2021-10-07 15:27:23,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-07 15:27:23,020 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.375) internal successors, (38), 15 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 26 [2021-10-07 15:27:23,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:27:23,540 INFO L225 Difference]: With dead ends: 45226 [2021-10-07 15:27:23,540 INFO L226 Difference]: Without dead ends: 45212 [2021-10-07 15:27:23,541 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 3512.2ms TimeCoverageRelationStatistics Valid=248, Invalid=744, Unknown=0, NotChecked=0, Total=992 [2021-10-07 15:27:23,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45212 states. [2021-10-07 15:27:24,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45212 to 19190. [2021-10-07 15:27:24,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19190 states, 19189 states have (on average 5.933086664234718) internal successors, (113850), 19189 states have internal predecessors, (113850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:27:24,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19190 states to 19190 states and 113850 transitions. [2021-10-07 15:27:24,964 INFO L78 Accepts]: Start accepts. Automaton has 19190 states and 113850 transitions. Word has length 26 [2021-10-07 15:27:24,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:27:24,965 INFO L470 AbstractCegarLoop]: Abstraction has 19190 states and 113850 transitions. [2021-10-07 15:27:24,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.375) internal successors, (38), 15 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) [2021-10-07 15:27:24,965 INFO L276 IsEmpty]: Start isEmpty. Operand 19190 states and 113850 transitions. [2021-10-07 15:27:25,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-07 15:27:25,028 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:27:25,028 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:27:25,042 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (73)] Forceful destruction successful, exit code 0 [2021-10-07 15:27:25,233 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 [2021-10-07 15:27:25,234 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:27:25,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:27:25,235 INFO L82 PathProgramCache]: Analyzing trace with hash 1314024188, now seen corresponding path program 24 times [2021-10-07 15:27:25,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:27:25,235 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [762623800] [2021-10-07 15:27:25,235 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:27:25,236 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:27:25,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:27:25,237 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) [2021-10-07 15:27:25,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (74)] Waiting until timeout for monitored process [2021-10-07 15:27:26,872 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-07 15:27:26,872 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:27:26,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 15:27:26,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:27:29,137 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:27:29,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:27:29,432 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:27:29,432 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:27:29,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [762623800] [2021-10-07 15:27:29,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [762623800] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:27:29,433 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:27:29,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-07 15:27:29,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115876377] [2021-10-07 15:27:29,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:27:29,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:27:29,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:27:29,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=144, Unknown=1, NotChecked=0, Total=182 [2021-10-07 15:27:29,434 INFO L87 Difference]: Start difference. First operand 19190 states and 113850 transitions. Second operand has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 13 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) [2021-10-07 15:27:42,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:27:42,037 INFO L93 Difference]: Finished difference Result 35498 states and 191323 transitions. [2021-10-07 15:27:42,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-07 15:27:42,037 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 13 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 26 [2021-10-07 15:27:42,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:27:42,369 INFO L225 Difference]: With dead ends: 35498 [2021-10-07 15:27:42,370 INFO L226 Difference]: Without dead ends: 35498 [2021-10-07 15:27:42,370 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 6774.3ms TimeCoverageRelationStatistics Valid=105, Invalid=445, Unknown=2, NotChecked=0, Total=552 [2021-10-07 15:27:42,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35498 states. [2021-10-07 15:27:43,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35498 to 20712. [2021-10-07 15:27:43,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20712 states, 20711 states have (on average 6.005552604895949) internal successors, (124381), 20711 states have internal predecessors, (124381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:27:43,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20712 states to 20712 states and 124381 transitions. [2021-10-07 15:27:43,428 INFO L78 Accepts]: Start accepts. Automaton has 20712 states and 124381 transitions. Word has length 26 [2021-10-07 15:27:43,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:27:43,428 INFO L470 AbstractCegarLoop]: Abstraction has 20712 states and 124381 transitions. [2021-10-07 15:27:43,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 13 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) [2021-10-07 15:27:43,428 INFO L276 IsEmpty]: Start isEmpty. Operand 20712 states and 124381 transitions. [2021-10-07 15:27:43,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-07 15:27:43,731 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:27:43,731 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:27:43,750 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (74)] Ended with exit code 0 [2021-10-07 15:27:43,946 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 [2021-10-07 15:27:43,947 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:27:43,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:27:43,947 INFO L82 PathProgramCache]: Analyzing trace with hash 1500199581, now seen corresponding path program 25 times [2021-10-07 15:27:43,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:27:43,948 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [124422975] [2021-10-07 15:27:43,948 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:27:43,949 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:27:43,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:27:43,950 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) [2021-10-07 15:27:43,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (75)] Waiting until timeout for monitored process [2021-10-07 15:27:45,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:27:45,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 15:27:45,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:27:47,480 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:27:47,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:27:47,787 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:27:47,787 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:27:47,787 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [124422975] [2021-10-07 15:27:47,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [124422975] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:27:47,787 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:27:47,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-07 15:27:47,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635007693] [2021-10-07 15:27:47,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:27:47,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:27:47,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:27:47,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=144, Unknown=1, NotChecked=0, Total=182 [2021-10-07 15:27:47,789 INFO L87 Difference]: Start difference. First operand 20712 states and 124381 transitions. Second operand has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 13 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) [2021-10-07 15:28:02,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:28:02,424 INFO L93 Difference]: Finished difference Result 32100 states and 174041 transitions. [2021-10-07 15:28:02,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-07 15:28:02,425 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 13 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 26 [2021-10-07 15:28:02,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:28:02,652 INFO L225 Difference]: With dead ends: 32100 [2021-10-07 15:28:02,652 INFO L226 Difference]: Without dead ends: 32048 [2021-10-07 15:28:02,652 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 10952.5ms TimeCoverageRelationStatistics Valid=123, Invalid=427, Unknown=2, NotChecked=0, Total=552 [2021-10-07 15:28:02,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32048 states. [2021-10-07 15:28:03,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32048 to 20920. [2021-10-07 15:28:03,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20920 states, 20919 states have (on average 5.994120177828768) internal successors, (125391), 20919 states have internal predecessors, (125391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:28:04,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20920 states to 20920 states and 125391 transitions. [2021-10-07 15:28:04,095 INFO L78 Accepts]: Start accepts. Automaton has 20920 states and 125391 transitions. Word has length 26 [2021-10-07 15:28:04,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:28:04,095 INFO L470 AbstractCegarLoop]: Abstraction has 20920 states and 125391 transitions. [2021-10-07 15:28:04,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 13 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) [2021-10-07 15:28:04,095 INFO L276 IsEmpty]: Start isEmpty. Operand 20920 states and 125391 transitions. [2021-10-07 15:28:04,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-07 15:28:04,174 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:28:04,174 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:28:04,190 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (75)] Forceful destruction successful, exit code 0 [2021-10-07 15:28:04,374 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 [2021-10-07 15:28:04,375 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:28:04,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:28:04,376 INFO L82 PathProgramCache]: Analyzing trace with hash 608909573, now seen corresponding path program 26 times [2021-10-07 15:28:04,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:28:04,377 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1493806079] [2021-10-07 15:28:04,377 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:28:04,377 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:28:04,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:28:04,379 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) [2021-10-07 15:28:04,380 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (76)] Waiting until timeout for monitored process [2021-10-07 15:28:05,828 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:28:05,828 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:28:05,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 15:28:05,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:28:08,276 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:28:08,276 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:28:08,581 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:28:08,581 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:28:08,582 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1493806079] [2021-10-07 15:28:08,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1493806079] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:28:08,582 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:28:08,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-07 15:28:08,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398989266] [2021-10-07 15:28:08,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:28:08,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:28:08,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:28:08,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=144, Unknown=1, NotChecked=0, Total=182 [2021-10-07 15:28:08,583 INFO L87 Difference]: Start difference. First operand 20920 states and 125391 transitions. Second operand has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 13 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) [2021-10-07 15:28:14,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:28:14,632 INFO L93 Difference]: Finished difference Result 29846 states and 164991 transitions. [2021-10-07 15:28:14,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-07 15:28:14,632 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 13 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 26 [2021-10-07 15:28:14,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:28:14,800 INFO L225 Difference]: With dead ends: 29846 [2021-10-07 15:28:14,801 INFO L226 Difference]: Without dead ends: 29838 [2021-10-07 15:28:14,801 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 6755.4ms TimeCoverageRelationStatistics Valid=103, Invalid=401, Unknown=2, NotChecked=0, Total=506 [2021-10-07 15:28:14,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29838 states. [2021-10-07 15:28:15,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29838 to 20432. [2021-10-07 15:28:15,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20432 states, 20431 states have (on average 5.978121482061573) internal successors, (122139), 20431 states have internal predecessors, (122139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:28:15,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20432 states to 20432 states and 122139 transitions. [2021-10-07 15:28:15,992 INFO L78 Accepts]: Start accepts. Automaton has 20432 states and 122139 transitions. Word has length 26 [2021-10-07 15:28:15,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:28:15,992 INFO L470 AbstractCegarLoop]: Abstraction has 20432 states and 122139 transitions. [2021-10-07 15:28:15,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 13 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) [2021-10-07 15:28:15,993 INFO L276 IsEmpty]: Start isEmpty. Operand 20432 states and 122139 transitions. [2021-10-07 15:28:16,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-07 15:28:16,078 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:28:16,078 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:28:16,093 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (76)] Forceful destruction successful, exit code 0 [2021-10-07 15:28:16,278 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 [2021-10-07 15:28:16,279 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:28:16,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:28:16,280 INFO L82 PathProgramCache]: Analyzing trace with hash 930307603, now seen corresponding path program 27 times [2021-10-07 15:28:16,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:28:16,281 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [628980862] [2021-10-07 15:28:16,281 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:28:16,281 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:28:16,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:28:16,282 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) [2021-10-07 15:28:16,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (77)] Waiting until timeout for monitored process [2021-10-07 15:28:17,816 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-07 15:28:17,816 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:28:17,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 15:28:17,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:28:18,248 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:28:18,248 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:28:18,574 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:28:18,574 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:28:18,574 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [628980862] [2021-10-07 15:28:18,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [628980862] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:28:18,575 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:28:18,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-07 15:28:18,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248636641] [2021-10-07 15:28:18,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:28:18,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:28:18,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:28:18,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:28:18,576 INFO L87 Difference]: Start difference. First operand 20432 states and 122139 transitions. Second operand has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 13 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) [2021-10-07 15:28:26,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:28:26,251 INFO L93 Difference]: Finished difference Result 29354 states and 164008 transitions. [2021-10-07 15:28:26,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-07 15:28:26,251 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 13 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 26 [2021-10-07 15:28:26,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:28:26,426 INFO L225 Difference]: With dead ends: 29354 [2021-10-07 15:28:26,426 INFO L226 Difference]: Without dead ends: 29354 [2021-10-07 15:28:26,426 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 689.9ms TimeCoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2021-10-07 15:28:26,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29354 states. [2021-10-07 15:28:27,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29354 to 20606. [2021-10-07 15:28:27,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20606 states, 20605 states have (on average 5.988546469303567) internal successors, (123394), 20605 states have internal predecessors, (123394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:28:27,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20606 states to 20606 states and 123394 transitions. [2021-10-07 15:28:27,684 INFO L78 Accepts]: Start accepts. Automaton has 20606 states and 123394 transitions. Word has length 26 [2021-10-07 15:28:27,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:28:27,684 INFO L470 AbstractCegarLoop]: Abstraction has 20606 states and 123394 transitions. [2021-10-07 15:28:27,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 13 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) [2021-10-07 15:28:27,685 INFO L276 IsEmpty]: Start isEmpty. Operand 20606 states and 123394 transitions. [2021-10-07 15:28:27,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-07 15:28:27,764 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:28:27,764 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:28:27,778 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (77)] Ended with exit code 0 [2021-10-07 15:28:27,965 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 [2021-10-07 15:28:27,965 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:28:27,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:28:27,966 INFO L82 PathProgramCache]: Analyzing trace with hash -1664520562, now seen corresponding path program 17 times [2021-10-07 15:28:27,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:28:27,967 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1371699209] [2021-10-07 15:28:27,967 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:28:27,967 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:28:27,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:28:27,968 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) [2021-10-07 15:28:27,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (78)] Waiting until timeout for monitored process [2021-10-07 15:28:29,274 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-07 15:28:29,274 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:28:29,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-07 15:28:29,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:28:29,950 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:28:29,950 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:28:30,426 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:28:30,426 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:28:30,426 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1371699209] [2021-10-07 15:28:30,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1371699209] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:28:30,427 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:28:30,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-07 15:28:30,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430511194] [2021-10-07 15:28:30,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:28:30,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:28:30,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:28:30,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:28:30,428 INFO L87 Difference]: Start difference. First operand 20606 states and 123394 transitions. Second operand has 14 states, 14 states have (on average 3.5) internal successors, (49), 13 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:28:33,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:28:33,081 INFO L93 Difference]: Finished difference Result 25044 states and 142233 transitions. [2021-10-07 15:28:33,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-07 15:28:33,082 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 13 states have internal predecessors, (49), 0 states have call successors, (0), 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 26 [2021-10-07 15:28:33,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:28:33,286 INFO L225 Difference]: With dead ends: 25044 [2021-10-07 15:28:33,287 INFO L226 Difference]: Without dead ends: 24982 [2021-10-07 15:28:33,287 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1171.3ms TimeCoverageRelationStatistics Valid=104, Invalid=496, Unknown=0, NotChecked=0, Total=600 [2021-10-07 15:28:33,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24982 states. [2021-10-07 15:28:34,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24982 to 21732. [2021-10-07 15:28:34,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21732 states, 21731 states have (on average 5.93691040449128) internal successors, (129015), 21731 states have internal predecessors, (129015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:28:34,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21732 states to 21732 states and 129015 transitions. [2021-10-07 15:28:34,635 INFO L78 Accepts]: Start accepts. Automaton has 21732 states and 129015 transitions. Word has length 26 [2021-10-07 15:28:34,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:28:34,635 INFO L470 AbstractCegarLoop]: Abstraction has 21732 states and 129015 transitions. [2021-10-07 15:28:34,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 13 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:28:34,636 INFO L276 IsEmpty]: Start isEmpty. Operand 21732 states and 129015 transitions. [2021-10-07 15:28:34,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-07 15:28:34,732 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:28:34,732 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:28:34,750 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (78)] Forceful destruction successful, exit code 0 [2021-10-07 15:28:34,945 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 [2021-10-07 15:28:34,946 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:28:34,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:28:34,947 INFO L82 PathProgramCache]: Analyzing trace with hash -2123076518, now seen corresponding path program 18 times [2021-10-07 15:28:34,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:28:34,948 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [366899073] [2021-10-07 15:28:34,948 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:28:34,949 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:28:34,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:28:34,950 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) [2021-10-07 15:28:34,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (79)] Waiting until timeout for monitored process [2021-10-07 15:28:36,484 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-07 15:28:36,484 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:28:36,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 15:28:36,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:28:37,108 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:28:37,109 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:28:37,472 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:28:37,473 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:28:37,473 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [366899073] [2021-10-07 15:28:37,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [366899073] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:28:37,473 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:28:37,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-07 15:28:37,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658929362] [2021-10-07 15:28:37,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:28:37,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:28:37,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:28:37,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:28:37,474 INFO L87 Difference]: Start difference. First operand 21732 states and 129015 transitions. Second operand has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 13 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:28:41,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:28:41,667 INFO L93 Difference]: Finished difference Result 26316 states and 150789 transitions. [2021-10-07 15:28:41,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-07 15:28:41,668 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 13 states have internal predecessors, (47), 0 states have call successors, (0), 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 26 [2021-10-07 15:28:41,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:28:41,847 INFO L225 Difference]: With dead ends: 26316 [2021-10-07 15:28:41,848 INFO L226 Difference]: Without dead ends: 26316 [2021-10-07 15:28:41,848 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 808.8ms TimeCoverageRelationStatistics Valid=92, Invalid=460, Unknown=0, NotChecked=0, Total=552 [2021-10-07 15:28:41,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26316 states. [2021-10-07 15:28:42,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26316 to 21612. [2021-10-07 15:28:42,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21612 states, 21611 states have (on average 5.962796723890611) internal successors, (128862), 21611 states have internal predecessors, (128862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:28:42,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21612 states to 21612 states and 128862 transitions. [2021-10-07 15:28:42,867 INFO L78 Accepts]: Start accepts. Automaton has 21612 states and 128862 transitions. Word has length 26 [2021-10-07 15:28:42,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:28:42,868 INFO L470 AbstractCegarLoop]: Abstraction has 21612 states and 128862 transitions. [2021-10-07 15:28:42,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 13 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:28:42,868 INFO L276 IsEmpty]: Start isEmpty. Operand 21612 states and 128862 transitions. [2021-10-07 15:28:42,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-07 15:28:42,941 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:28:42,941 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:28:42,958 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (79)] Forceful destruction successful, exit code 0 [2021-10-07 15:28:43,142 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 [2021-10-07 15:28:43,142 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:28:43,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:28:43,143 INFO L82 PathProgramCache]: Analyzing trace with hash 299743754, now seen corresponding path program 19 times [2021-10-07 15:28:43,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:28:43,144 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [388060185] [2021-10-07 15:28:43,144 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:28:43,144 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:28:43,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:28:43,146 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) [2021-10-07 15:28:43,147 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (80)] Waiting until timeout for monitored process [2021-10-07 15:28:44,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:28:44,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-07 15:28:44,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:28:45,326 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:28:45,326 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:28:45,942 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:28:45,942 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:28:45,942 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [388060185] [2021-10-07 15:28:45,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [388060185] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:28:45,942 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:28:45,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-07 15:28:45,943 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996173431] [2021-10-07 15:28:45,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:28:45,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:28:45,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:28:45,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:28:45,944 INFO L87 Difference]: Start difference. First operand 21612 states and 128862 transitions. Second operand has 14 states, 14 states have (on average 3.5) internal successors, (49), 13 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:28:51,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:28:51,432 INFO L93 Difference]: Finished difference Result 28642 states and 160892 transitions. [2021-10-07 15:28:51,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-07 15:28:51,433 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 13 states have internal predecessors, (49), 0 states have call successors, (0), 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 26 [2021-10-07 15:28:51,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:28:51,727 INFO L225 Difference]: With dead ends: 28642 [2021-10-07 15:28:51,728 INFO L226 Difference]: Without dead ends: 28600 [2021-10-07 15:28:51,728 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 1831.2ms TimeCoverageRelationStatistics Valid=146, Invalid=784, Unknown=0, NotChecked=0, Total=930 [2021-10-07 15:28:51,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28600 states. [2021-10-07 15:28:52,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28600 to 22412. [2021-10-07 15:28:52,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22412 states, 22411 states have (on average 6.003569675605729) internal successors, (134546), 22411 states have internal predecessors, (134546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:28:52,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22412 states to 22412 states and 134546 transitions. [2021-10-07 15:28:52,842 INFO L78 Accepts]: Start accepts. Automaton has 22412 states and 134546 transitions. Word has length 26 [2021-10-07 15:28:52,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:28:52,842 INFO L470 AbstractCegarLoop]: Abstraction has 22412 states and 134546 transitions. [2021-10-07 15:28:52,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 13 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:28:52,843 INFO L276 IsEmpty]: Start isEmpty. Operand 22412 states and 134546 transitions. [2021-10-07 15:28:52,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-07 15:28:52,917 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:28:52,917 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:28:52,933 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (80)] Forceful destruction successful, exit code 0 [2021-10-07 15:28:53,117 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 [2021-10-07 15:28:53,118 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:28:53,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:28:53,119 INFO L82 PathProgramCache]: Analyzing trace with hash -1509879284, now seen corresponding path program 20 times [2021-10-07 15:28:53,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:28:53,120 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2106723313] [2021-10-07 15:28:53,120 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:28:53,120 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:28:53,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:28:53,122 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) [2021-10-07 15:28:53,122 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (81)] Waiting until timeout for monitored process [2021-10-07 15:28:54,869 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:28:54,869 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:28:54,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-07 15:28:54,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:28:55,283 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:28:55,283 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:28:55,877 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:28:55,877 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:28:55,877 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2106723313] [2021-10-07 15:28:55,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2106723313] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:28:55,877 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:28:55,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-10-07 15:28:55,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674709767] [2021-10-07 15:28:55,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-07 15:28:55,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:28:55,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-07 15:28:55,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2021-10-07 15:28:55,878 INFO L87 Difference]: Start difference. First operand 22412 states and 134546 transitions. Second operand has 16 states, 16 states have (on average 3.125) internal successors, (50), 15 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:29:00,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:29:00,869 INFO L93 Difference]: Finished difference Result 32026 states and 181390 transitions. [2021-10-07 15:29:00,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-07 15:29:00,870 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.125) internal successors, (50), 15 states have internal predecessors, (50), 0 states have call successors, (0), 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 26 [2021-10-07 15:29:00,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:29:01,048 INFO L225 Difference]: With dead ends: 32026 [2021-10-07 15:29:01,048 INFO L226 Difference]: Without dead ends: 31984 [2021-10-07 15:29:01,049 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 1323.0ms TimeCoverageRelationStatistics Valid=136, Invalid=566, Unknown=0, NotChecked=0, Total=702 [2021-10-07 15:29:01,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31984 states. [2021-10-07 15:29:02,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31984 to 24230. [2021-10-07 15:29:02,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24230 states, 24229 states have (on average 6.050889430021875) internal successors, (146607), 24229 states have internal predecessors, (146607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:29:02,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24230 states to 24230 states and 146607 transitions. [2021-10-07 15:29:02,358 INFO L78 Accepts]: Start accepts. Automaton has 24230 states and 146607 transitions. Word has length 26 [2021-10-07 15:29:02,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:29:02,358 INFO L470 AbstractCegarLoop]: Abstraction has 24230 states and 146607 transitions. [2021-10-07 15:29:02,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.125) internal successors, (50), 15 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:29:02,358 INFO L276 IsEmpty]: Start isEmpty. Operand 24230 states and 146607 transitions. [2021-10-07 15:29:02,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-07 15:29:02,696 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:29:02,697 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:29:02,715 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (81)] Forceful destruction successful, exit code 0 [2021-10-07 15:29:02,911 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 [2021-10-07 15:29:02,912 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:29:02,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:29:02,913 INFO L82 PathProgramCache]: Analyzing trace with hash -387654364, now seen corresponding path program 21 times [2021-10-07 15:29:02,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:29:02,913 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [955552214] [2021-10-07 15:29:02,914 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:29:02,914 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:29:02,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:29:02,915 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) [2021-10-07 15:29:02,916 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (82)] Waiting until timeout for monitored process [2021-10-07 15:29:04,513 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-07 15:29:04,514 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:29:04,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-07 15:29:04,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:29:04,902 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:29:04,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:29:05,969 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:29:05,969 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:29:05,969 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [955552214] [2021-10-07 15:29:05,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [955552214] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:29:05,970 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:29:05,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-10-07 15:29:05,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621988408] [2021-10-07 15:29:05,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-07 15:29:05,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:29:05,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-07 15:29:05,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2021-10-07 15:29:05,971 INFO L87 Difference]: Start difference. First operand 24230 states and 146607 transitions. Second operand has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 14 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:29:12,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:29:12,718 INFO L93 Difference]: Finished difference Result 43138 states and 240346 transitions. [2021-10-07 15:29:12,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-07 15:29:12,719 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 14 states have internal predecessors, (50), 0 states have call successors, (0), 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 26 [2021-10-07 15:29:12,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:29:13,019 INFO L225 Difference]: With dead ends: 43138 [2021-10-07 15:29:13,019 INFO L226 Difference]: Without dead ends: 43098 [2021-10-07 15:29:13,020 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 3892.7ms TimeCoverageRelationStatistics Valid=271, Invalid=1211, Unknown=0, NotChecked=0, Total=1482 [2021-10-07 15:29:13,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43098 states. [2021-10-07 15:29:14,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43098 to 28480. [2021-10-07 15:29:14,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28480 states, 28479 states have (on average 6.110748270655571) internal successors, (174028), 28479 states have internal predecessors, (174028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:29:14,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28480 states to 28480 states and 174028 transitions. [2021-10-07 15:29:14,902 INFO L78 Accepts]: Start accepts. Automaton has 28480 states and 174028 transitions. Word has length 26 [2021-10-07 15:29:14,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:29:14,902 INFO L470 AbstractCegarLoop]: Abstraction has 28480 states and 174028 transitions. [2021-10-07 15:29:14,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 14 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:29:14,903 INFO L276 IsEmpty]: Start isEmpty. Operand 28480 states and 174028 transitions. [2021-10-07 15:29:15,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-07 15:29:15,009 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:29:15,009 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:29:15,024 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (82)] Forceful destruction successful, exit code 0 [2021-10-07 15:29:15,209 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 [2021-10-07 15:29:15,210 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:29:15,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:29:15,212 INFO L82 PathProgramCache]: Analyzing trace with hash -1656754486, now seen corresponding path program 22 times [2021-10-07 15:29:15,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:29:15,213 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1077763582] [2021-10-07 15:29:15,213 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:29:15,214 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:29:15,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:29:15,214 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) [2021-10-07 15:29:15,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (83)] Waiting until timeout for monitored process [2021-10-07 15:29:16,890 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:29:16,891 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:29:16,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-07 15:29:16,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:29:17,362 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:29:17,362 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:29:17,912 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:29:17,912 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:29:17,912 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1077763582] [2021-10-07 15:29:17,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1077763582] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:29:17,912 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:29:17,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-07 15:29:17,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127725617] [2021-10-07 15:29:17,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:29:17,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:29:17,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:29:17,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:29:17,914 INFO L87 Difference]: Start difference. First operand 28480 states and 174028 transitions. Second operand has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 13 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:29:21,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:29:21,869 INFO L93 Difference]: Finished difference Result 39172 states and 221312 transitions. [2021-10-07 15:29:21,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-07 15:29:21,870 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 13 states have internal predecessors, (47), 0 states have call successors, (0), 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 26 [2021-10-07 15:29:21,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:29:22,343 INFO L225 Difference]: With dead ends: 39172 [2021-10-07 15:29:22,343 INFO L226 Difference]: Without dead ends: 39172 [2021-10-07 15:29:22,343 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1343.6ms TimeCoverageRelationStatistics Valid=115, Invalid=485, Unknown=0, NotChecked=0, Total=600 [2021-10-07 15:29:22,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39172 states. [2021-10-07 15:29:23,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39172 to 28486. [2021-10-07 15:29:23,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28486 states, 28485 states have (on average 6.097981393715991) internal successors, (173701), 28485 states have internal predecessors, (173701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:29:24,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28486 states to 28486 states and 173701 transitions. [2021-10-07 15:29:24,249 INFO L78 Accepts]: Start accepts. Automaton has 28486 states and 173701 transitions. Word has length 26 [2021-10-07 15:29:24,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:29:24,249 INFO L470 AbstractCegarLoop]: Abstraction has 28486 states and 173701 transitions. [2021-10-07 15:29:24,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 13 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:29:24,250 INFO L276 IsEmpty]: Start isEmpty. Operand 28486 states and 173701 transitions. [2021-10-07 15:29:24,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-07 15:29:24,421 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:29:24,421 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:29:24,436 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (83)] Forceful destruction successful, exit code 0 [2021-10-07 15:29:24,622 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 [2021-10-07 15:29:24,622 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:29:24,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:29:24,623 INFO L82 PathProgramCache]: Analyzing trace with hash -749658564, now seen corresponding path program 23 times [2021-10-07 15:29:24,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:29:24,624 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [838272507] [2021-10-07 15:29:24,624 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:29:24,625 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:29:24,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:29:24,626 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) [2021-10-07 15:29:24,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (84)] Waiting until timeout for monitored process [2021-10-07 15:29:26,184 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-07 15:29:26,185 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:29:26,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-07 15:29:26,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:29:26,862 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:29:26,862 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:29:27,492 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:29:27,493 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:29:27,493 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [838272507] [2021-10-07 15:29:27,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [838272507] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:29:27,493 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:29:27,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-10-07 15:29:27,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456752357] [2021-10-07 15:29:27,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-07 15:29:27,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:29:27,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-07 15:29:27,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2021-10-07 15:29:27,495 INFO L87 Difference]: Start difference. First operand 28486 states and 173701 transitions. Second operand has 16 states, 16 states have (on average 3.125) internal successors, (50), 15 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:29:36,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:29:36,779 INFO L93 Difference]: Finished difference Result 38992 states and 223021 transitions. [2021-10-07 15:29:36,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-07 15:29:36,780 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.125) internal successors, (50), 15 states have internal predecessors, (50), 0 states have call successors, (0), 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 26 [2021-10-07 15:29:36,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:29:37,035 INFO L225 Difference]: With dead ends: 38992 [2021-10-07 15:29:37,035 INFO L226 Difference]: Without dead ends: 38950 [2021-10-07 15:29:37,036 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1302.5ms TimeCoverageRelationStatistics Valid=118, Invalid=532, Unknown=0, NotChecked=0, Total=650 [2021-10-07 15:29:37,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38950 states. [2021-10-07 15:29:38,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38950 to 28530. [2021-10-07 15:29:38,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28530 states, 28529 states have (on average 6.103683970696484) internal successors, (174132), 28529 states have internal predecessors, (174132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:29:38,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28530 states to 28530 states and 174132 transitions. [2021-10-07 15:29:38,718 INFO L78 Accepts]: Start accepts. Automaton has 28530 states and 174132 transitions. Word has length 26 [2021-10-07 15:29:38,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:29:38,718 INFO L470 AbstractCegarLoop]: Abstraction has 28530 states and 174132 transitions. [2021-10-07 15:29:38,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.125) internal successors, (50), 15 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:29:38,718 INFO L276 IsEmpty]: Start isEmpty. Operand 28530 states and 174132 transitions. [2021-10-07 15:29:39,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-07 15:29:39,133 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:29:39,133 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:29:39,163 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (84)] Forceful destruction successful, exit code 0 [2021-10-07 15:29:39,333 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 [2021-10-07 15:29:39,334 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:29:39,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:29:39,334 INFO L82 PathProgramCache]: Analyzing trace with hash 221487868, now seen corresponding path program 24 times [2021-10-07 15:29:39,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:29:39,335 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1695111968] [2021-10-07 15:29:39,335 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:29:39,335 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:29:39,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:29:39,337 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) [2021-10-07 15:29:39,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (85)] Waiting until timeout for monitored process [2021-10-07 15:29:40,896 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-07 15:29:40,896 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:29:40,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 15:29:40,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:29:43,195 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:29:43,195 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:29:43,520 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:29:43,520 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:29:43,520 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1695111968] [2021-10-07 15:29:43,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1695111968] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:29:43,521 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:29:43,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-07 15:29:43,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792526375] [2021-10-07 15:29:43,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:29:43,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:29:43,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:29:43,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=142, Unknown=1, NotChecked=0, Total=182 [2021-10-07 15:29:43,523 INFO L87 Difference]: Start difference. First operand 28530 states and 174132 transitions. Second operand has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 13 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:29:59,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:29:59,695 INFO L93 Difference]: Finished difference Result 33680 states and 195763 transitions. [2021-10-07 15:29:59,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-07 15:29:59,695 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 13 states have internal predecessors, (47), 0 states have call successors, (0), 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 26 [2021-10-07 15:29:59,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:29:59,918 INFO L225 Difference]: With dead ends: 33680 [2021-10-07 15:29:59,919 INFO L226 Difference]: Without dead ends: 33486 [2021-10-07 15:29:59,919 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 11287.8ms TimeCoverageRelationStatistics Valid=119, Invalid=385, Unknown=2, NotChecked=0, Total=506 [2021-10-07 15:29:59,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33486 states. [2021-10-07 15:30:01,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33486 to 28706. [2021-10-07 15:30:01,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28706 states, 28705 states have (on average 6.13008186727051) internal successors, (175964), 28705 states have internal predecessors, (175964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:30:01,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28706 states to 28706 states and 175964 transitions. [2021-10-07 15:30:01,677 INFO L78 Accepts]: Start accepts. Automaton has 28706 states and 175964 transitions. Word has length 26 [2021-10-07 15:30:01,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:30:01,677 INFO L470 AbstractCegarLoop]: Abstraction has 28706 states and 175964 transitions. [2021-10-07 15:30:01,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 13 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:30:01,678 INFO L276 IsEmpty]: Start isEmpty. Operand 28706 states and 175964 transitions. [2021-10-07 15:30:01,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-07 15:30:01,810 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:30:01,810 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:30:01,826 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (85)] Ended with exit code 0 [2021-10-07 15:30:02,011 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 [2021-10-07 15:30:02,012 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:30:02,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:30:02,013 INFO L82 PathProgramCache]: Analyzing trace with hash -320424412, now seen corresponding path program 25 times [2021-10-07 15:30:02,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:30:02,013 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1493434781] [2021-10-07 15:30:02,013 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:30:02,014 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:30:02,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:30:02,015 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) [2021-10-07 15:30:02,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (86)] Waiting until timeout for monitored process [2021-10-07 15:30:03,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:30:03,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-07 15:30:03,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:30:04,019 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:30:04,019 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:30:04,994 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:30:04,994 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:30:04,995 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1493434781] [2021-10-07 15:30:04,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1493434781] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:30:04,995 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:30:04,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-07 15:30:04,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548529167] [2021-10-07 15:30:04,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:30:04,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:30:04,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:30:04,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:30:04,996 INFO L87 Difference]: Start difference. First operand 28706 states and 175964 transitions. Second operand has 14 states, 14 states have (on average 3.5) internal successors, (49), 13 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:30:11,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:30:11,632 INFO L93 Difference]: Finished difference Result 35304 states and 210291 transitions. [2021-10-07 15:30:11,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-07 15:30:11,633 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 13 states have internal predecessors, (49), 0 states have call successors, (0), 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 26 [2021-10-07 15:30:11,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:30:11,946 INFO L225 Difference]: With dead ends: 35304 [2021-10-07 15:30:11,947 INFO L226 Difference]: Without dead ends: 35076 [2021-10-07 15:30:11,947 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 1788.9ms TimeCoverageRelationStatistics Valid=162, Invalid=488, Unknown=0, NotChecked=0, Total=650 [2021-10-07 15:30:11,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35076 states. [2021-10-07 15:30:13,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35076 to 30444. [2021-10-07 15:30:13,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30444 states, 30443 states have (on average 6.157540321256118) internal successors, (187454), 30443 states have internal predecessors, (187454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:30:13,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30444 states to 30444 states and 187454 transitions. [2021-10-07 15:30:13,459 INFO L78 Accepts]: Start accepts. Automaton has 30444 states and 187454 transitions. Word has length 26 [2021-10-07 15:30:13,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:30:13,459 INFO L470 AbstractCegarLoop]: Abstraction has 30444 states and 187454 transitions. [2021-10-07 15:30:13,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 13 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:30:13,459 INFO L276 IsEmpty]: Start isEmpty. Operand 30444 states and 187454 transitions. [2021-10-07 15:30:13,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-07 15:30:13,966 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:30:13,966 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:30:13,987 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (86)] Forceful destruction successful, exit code 0 [2021-10-07 15:30:14,181 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 [2021-10-07 15:30:14,182 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:30:14,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:30:14,182 INFO L82 PathProgramCache]: Analyzing trace with hash -642047750, now seen corresponding path program 26 times [2021-10-07 15:30:14,183 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:30:14,183 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1803863668] [2021-10-07 15:30:14,184 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:30:14,184 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:30:14,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:30:14,185 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) [2021-10-07 15:30:14,186 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (87)] Waiting until timeout for monitored process [2021-10-07 15:30:15,758 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:30:15,759 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:30:15,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-07 15:30:15,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:30:17,093 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:30:17,094 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:30:17,666 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:30:17,667 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:30:17,667 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1803863668] [2021-10-07 15:30:17,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1803863668] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:30:17,667 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:30:17,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-10-07 15:30:17,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238133337] [2021-10-07 15:30:17,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-07 15:30:17,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:30:17,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-07 15:30:17,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2021-10-07 15:30:17,669 INFO L87 Difference]: Start difference. First operand 30444 states and 187454 transitions. Second operand has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 14 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:30:22,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:30:22,447 INFO L93 Difference]: Finished difference Result 45512 states and 262716 transitions. [2021-10-07 15:30:22,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-07 15:30:22,447 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 14 states have internal predecessors, (50), 0 states have call successors, (0), 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 26 [2021-10-07 15:30:22,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:30:23,413 INFO L225 Difference]: With dead ends: 45512 [2021-10-07 15:30:23,413 INFO L226 Difference]: Without dead ends: 45132 [2021-10-07 15:30:23,414 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 2217.7ms TimeCoverageRelationStatistics Valid=120, Invalid=530, Unknown=0, NotChecked=0, Total=650 [2021-10-07 15:30:23,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45132 states. [2021-10-07 15:30:25,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45132 to 33814. [2021-10-07 15:30:25,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33814 states, 33813 states have (on average 6.211161387631976) internal successors, (210018), 33813 states have internal predecessors, (210018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:30:26,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33814 states to 33814 states and 210018 transitions. [2021-10-07 15:30:26,113 INFO L78 Accepts]: Start accepts. Automaton has 33814 states and 210018 transitions. Word has length 26 [2021-10-07 15:30:26,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:30:26,113 INFO L470 AbstractCegarLoop]: Abstraction has 33814 states and 210018 transitions. [2021-10-07 15:30:26,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 14 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:30:26,113 INFO L276 IsEmpty]: Start isEmpty. Operand 33814 states and 210018 transitions. [2021-10-07 15:30:26,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-07 15:30:26,250 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:30:26,250 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:30:26,267 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (87)] Forceful destruction successful, exit code 0 [2021-10-07 15:30:26,450 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 [2021-10-07 15:30:26,451 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:30:26,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:30:26,452 INFO L82 PathProgramCache]: Analyzing trace with hash -1142996982, now seen corresponding path program 27 times [2021-10-07 15:30:26,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:30:26,453 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [860650687] [2021-10-07 15:30:26,453 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:30:26,454 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:30:26,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:30:26,455 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) [2021-10-07 15:30:26,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (88)] Waiting until timeout for monitored process [2021-10-07 15:30:28,429 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-07 15:30:28,429 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:30:28,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-07 15:30:28,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:30:28,784 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:30:28,785 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:30:29,426 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:30:29,427 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:30:29,427 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [860650687] [2021-10-07 15:30:29,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [860650687] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:30:29,427 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:30:29,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-10-07 15:30:29,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855046943] [2021-10-07 15:30:29,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-07 15:30:29,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:30:29,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-07 15:30:29,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-10-07 15:30:29,429 INFO L87 Difference]: Start difference. First operand 33814 states and 210018 transitions. Second operand has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 14 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:30:35,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:30:35,956 INFO L93 Difference]: Finished difference Result 44772 states and 264478 transitions. [2021-10-07 15:30:35,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-07 15:30:35,957 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 14 states have internal predecessors, (50), 0 states have call successors, (0), 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 26 [2021-10-07 15:30:35,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:30:36,274 INFO L225 Difference]: With dead ends: 44772 [2021-10-07 15:30:36,275 INFO L226 Difference]: Without dead ends: 44730 [2021-10-07 15:30:36,275 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 3612.9ms TimeCoverageRelationStatistics Valid=135, Invalid=795, Unknown=0, NotChecked=0, Total=930 [2021-10-07 15:30:36,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44730 states. [2021-10-07 15:30:37,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44730 to 35968. [2021-10-07 15:30:37,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35968 states, 35967 states have (on average 6.225901520838547) internal successors, (223927), 35967 states have internal predecessors, (223927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:30:38,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35968 states to 35968 states and 223927 transitions. [2021-10-07 15:30:38,260 INFO L78 Accepts]: Start accepts. Automaton has 35968 states and 223927 transitions. Word has length 26 [2021-10-07 15:30:38,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:30:38,260 INFO L470 AbstractCegarLoop]: Abstraction has 35968 states and 223927 transitions. [2021-10-07 15:30:38,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 14 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:30:38,260 INFO L276 IsEmpty]: Start isEmpty. Operand 35968 states and 223927 transitions. [2021-10-07 15:30:38,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-07 15:30:38,819 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:30:38,819 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:30:38,839 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (88)] Forceful destruction successful, exit code 0 [2021-10-07 15:30:39,034 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 [2021-10-07 15:30:39,035 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:30:39,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:30:39,036 INFO L82 PathProgramCache]: Analyzing trace with hash 1195472074, now seen corresponding path program 28 times [2021-10-07 15:30:39,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:30:39,037 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [708492027] [2021-10-07 15:30:39,037 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:30:39,037 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:30:39,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:30:39,039 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) [2021-10-07 15:30:39,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (89)] Waiting until timeout for monitored process [2021-10-07 15:30:40,501 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:30:40,502 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:30:40,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 15:30:40,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:30:42,775 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:30:42,776 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:30:43,102 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:30:43,102 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:30:43,102 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [708492027] [2021-10-07 15:30:43,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [708492027] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:30:43,103 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:30:43,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-07 15:30:43,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068228026] [2021-10-07 15:30:43,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:30:43,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:30:43,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:30:43,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=144, Unknown=1, NotChecked=0, Total=182 [2021-10-07 15:30:43,104 INFO L87 Difference]: Start difference. First operand 35968 states and 223927 transitions. Second operand has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 13 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:30:52,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:30:52,252 INFO L93 Difference]: Finished difference Result 46074 states and 269666 transitions. [2021-10-07 15:30:52,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-07 15:30:52,253 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 13 states have internal predecessors, (47), 0 states have call successors, (0), 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 26 [2021-10-07 15:30:52,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:30:52,900 INFO L225 Difference]: With dead ends: 46074 [2021-10-07 15:30:52,901 INFO L226 Difference]: Without dead ends: 46074 [2021-10-07 15:30:52,901 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 6767.3ms TimeCoverageRelationStatistics Valid=105, Invalid=445, Unknown=2, NotChecked=0, Total=552 [2021-10-07 15:30:52,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46074 states. [2021-10-07 15:30:54,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46074 to 35182. [2021-10-07 15:30:54,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35182 states, 35181 states have (on average 6.211335664136892) internal successors, (218521), 35181 states have internal predecessors, (218521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:30:55,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35182 states to 35182 states and 218521 transitions. [2021-10-07 15:30:55,119 INFO L78 Accepts]: Start accepts. Automaton has 35182 states and 218521 transitions. Word has length 26 [2021-10-07 15:30:55,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:30:55,119 INFO L470 AbstractCegarLoop]: Abstraction has 35182 states and 218521 transitions. [2021-10-07 15:30:55,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 13 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:30:55,119 INFO L276 IsEmpty]: Start isEmpty. Operand 35182 states and 218521 transitions. [2021-10-07 15:30:55,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-07 15:30:55,292 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:30:55,292 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:30:55,310 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (89)] Forceful destruction successful, exit code 0 [2021-10-07 15:30:55,505 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 [2021-10-07 15:30:55,506 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:30:55,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:30:55,506 INFO L82 PathProgramCache]: Analyzing trace with hash 1620502940, now seen corresponding path program 29 times [2021-10-07 15:30:55,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:30:55,510 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1400133774] [2021-10-07 15:30:55,510 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:30:55,510 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:30:55,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:30:55,511 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) [2021-10-07 15:30:55,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (90)] Waiting until timeout for monitored process [2021-10-07 15:30:57,072 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-07 15:30:57,072 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:30:57,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-07 15:30:57,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:30:59,400 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:30:59,400 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:30:59,977 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:30:59,978 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:30:59,978 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1400133774] [2021-10-07 15:30:59,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1400133774] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:30:59,978 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:30:59,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-10-07 15:30:59,979 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946557904] [2021-10-07 15:30:59,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-07 15:30:59,979 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:30:59,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-07 15:30:59,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=168, Unknown=1, NotChecked=0, Total=210 [2021-10-07 15:30:59,980 INFO L87 Difference]: Start difference. First operand 35182 states and 218521 transitions. Second operand has 15 states, 15 states have (on average 3.2) internal successors, (48), 14 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:31:15,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:31:15,304 INFO L93 Difference]: Finished difference Result 42196 states and 251477 transitions. [2021-10-07 15:31:15,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-07 15:31:15,305 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.2) internal successors, (48), 14 states have internal predecessors, (48), 0 states have call successors, (0), 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 26 [2021-10-07 15:31:15,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:31:15,956 INFO L225 Difference]: With dead ends: 42196 [2021-10-07 15:31:15,956 INFO L226 Difference]: Without dead ends: 42080 [2021-10-07 15:31:15,956 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 8992.2ms TimeCoverageRelationStatistics Valid=112, Invalid=438, Unknown=2, NotChecked=0, Total=552 [2021-10-07 15:31:16,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42080 states. [2021-10-07 15:31:17,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42080 to 34502. [2021-10-07 15:31:17,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34502 states, 34501 states have (on average 6.196284165676357) internal successors, (213778), 34501 states have internal predecessors, (213778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:31:17,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34502 states to 34502 states and 213778 transitions. [2021-10-07 15:31:17,916 INFO L78 Accepts]: Start accepts. Automaton has 34502 states and 213778 transitions. Word has length 26 [2021-10-07 15:31:17,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:31:17,917 INFO L470 AbstractCegarLoop]: Abstraction has 34502 states and 213778 transitions. [2021-10-07 15:31:17,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.2) internal successors, (48), 14 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:31:17,917 INFO L276 IsEmpty]: Start isEmpty. Operand 34502 states and 213778 transitions. [2021-10-07 15:31:18,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-07 15:31:18,055 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:31:18,055 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:31:18,072 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (90)] Ended with exit code 0 [2021-10-07 15:31:18,264 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 [2021-10-07 15:31:18,265 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:31:18,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:31:18,266 INFO L82 PathProgramCache]: Analyzing trace with hash -871680918, now seen corresponding path program 30 times [2021-10-07 15:31:18,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:31:18,266 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2039502131] [2021-10-07 15:31:18,267 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:31:18,267 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:31:18,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:31:18,268 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) [2021-10-07 15:31:18,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (91)] Waiting until timeout for monitored process [2021-10-07 15:31:20,342 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-07 15:31:20,342 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:31:20,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-07 15:31:20,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:31:20,713 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:31:20,714 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:31:22,031 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:31:22,031 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:31:22,032 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2039502131] [2021-10-07 15:31:22,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2039502131] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:31:22,032 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:31:22,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-10-07 15:31:22,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097875459] [2021-10-07 15:31:22,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-07 15:31:22,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:31:22,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-07 15:31:22,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2021-10-07 15:31:22,034 INFO L87 Difference]: Start difference. First operand 34502 states and 213778 transitions. Second operand has 15 states, 15 states have (on average 3.2) internal successors, (48), 14 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:31:38,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:31:38,978 INFO L93 Difference]: Finished difference Result 43840 states and 260847 transitions. [2021-10-07 15:31:38,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-07 15:31:38,979 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.2) internal successors, (48), 14 states have internal predecessors, (48), 0 states have call successors, (0), 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 26 [2021-10-07 15:31:38,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:31:39,531 INFO L225 Difference]: With dead ends: 43840 [2021-10-07 15:31:39,532 INFO L226 Difference]: Without dead ends: 43804 [2021-10-07 15:31:39,532 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 2657.6ms TimeCoverageRelationStatistics Valid=221, Invalid=709, Unknown=0, NotChecked=0, Total=930 [2021-10-07 15:31:39,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43804 states. [2021-10-07 15:31:41,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43804 to 36280. [2021-10-07 15:31:41,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36280 states, 36279 states have (on average 6.219107472642576) internal successors, (225623), 36279 states have internal predecessors, (225623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:31:41,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36280 states to 36280 states and 225623 transitions. [2021-10-07 15:31:41,773 INFO L78 Accepts]: Start accepts. Automaton has 36280 states and 225623 transitions. Word has length 26 [2021-10-07 15:31:41,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:31:41,773 INFO L470 AbstractCegarLoop]: Abstraction has 36280 states and 225623 transitions. [2021-10-07 15:31:41,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.2) internal successors, (48), 14 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:31:41,773 INFO L276 IsEmpty]: Start isEmpty. Operand 36280 states and 225623 transitions. [2021-10-07 15:31:41,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-07 15:31:41,996 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:31:41,997 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:31:42,017 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (91)] Forceful destruction successful, exit code 0 [2021-10-07 15:31:42,210 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 [2021-10-07 15:31:42,211 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:31:42,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:31:42,212 INFO L82 PathProgramCache]: Analyzing trace with hash 1763704100, now seen corresponding path program 31 times [2021-10-07 15:31:42,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:31:42,212 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [299739043] [2021-10-07 15:31:42,212 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:31:42,213 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:31:42,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:31:42,214 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) [2021-10-07 15:31:42,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (92)] Waiting until timeout for monitored process [2021-10-07 15:31:43,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:31:43,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-07 15:31:43,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:31:44,128 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:31:44,128 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:31:44,794 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:31:44,794 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:31:44,794 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [299739043] [2021-10-07 15:31:44,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [299739043] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:31:44,794 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:31:44,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-07 15:31:44,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406084385] [2021-10-07 15:31:44,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:31:44,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:31:44,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:31:44,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:31:44,795 INFO L87 Difference]: Start difference. First operand 36280 states and 225623 transitions. Second operand has 14 states, 14 states have (on average 3.5) internal successors, (49), 13 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:31:51,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:31:51,228 INFO L93 Difference]: Finished difference Result 47408 states and 287311 transitions. [2021-10-07 15:31:51,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-07 15:31:51,229 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 13 states have internal predecessors, (49), 0 states have call successors, (0), 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 26 [2021-10-07 15:31:51,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:31:51,970 INFO L225 Difference]: With dead ends: 47408 [2021-10-07 15:31:51,971 INFO L226 Difference]: Without dead ends: 47168 [2021-10-07 15:31:51,971 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 1570.1ms TimeCoverageRelationStatistics Valid=176, Invalid=694, Unknown=0, NotChecked=0, Total=870 [2021-10-07 15:31:52,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47168 states. [2021-10-07 15:31:53,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47168 to 40478. [2021-10-07 15:31:53,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40478 states, 40477 states have (on average 6.24732564172246) internal successors, (252873), 40477 states have internal predecessors, (252873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:31:54,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40478 states to 40478 states and 252873 transitions. [2021-10-07 15:31:54,515 INFO L78 Accepts]: Start accepts. Automaton has 40478 states and 252873 transitions. Word has length 26 [2021-10-07 15:31:54,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:31:54,516 INFO L470 AbstractCegarLoop]: Abstraction has 40478 states and 252873 transitions. [2021-10-07 15:31:54,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 13 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:31:54,516 INFO L276 IsEmpty]: Start isEmpty. Operand 40478 states and 252873 transitions. [2021-10-07 15:31:54,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-07 15:31:54,685 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:31:54,685 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:31:54,702 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (92)] Forceful destruction successful, exit code 0 [2021-10-07 15:31:54,886 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 [2021-10-07 15:31:54,886 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:31:54,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:31:54,887 INFO L82 PathProgramCache]: Analyzing trace with hash -108096678, now seen corresponding path program 32 times [2021-10-07 15:31:54,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:31:54,888 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1431184650] [2021-10-07 15:31:54,888 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:31:54,888 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:31:54,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:31:54,889 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) [2021-10-07 15:31:54,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (93)] Waiting until timeout for monitored process [2021-10-07 15:31:56,975 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:31:56,975 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:31:56,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-07 15:31:56,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:31:57,386 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:31:57,386 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:31:58,644 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:31:58,645 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:31:58,645 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1431184650] [2021-10-07 15:31:58,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1431184650] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:31:58,645 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:31:58,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-10-07 15:31:58,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70683286] [2021-10-07 15:31:58,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-07 15:31:58,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:31:58,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-07 15:31:58,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2021-10-07 15:31:58,647 INFO L87 Difference]: Start difference. First operand 40478 states and 252873 transitions. Second operand has 15 states, 15 states have (on average 3.2) internal successors, (48), 14 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:32:09,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:32:09,409 INFO L93 Difference]: Finished difference Result 63152 states and 361071 transitions. [2021-10-07 15:32:09,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-07 15:32:09,410 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.2) internal successors, (48), 14 states have internal predecessors, (48), 0 states have call successors, (0), 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 26 [2021-10-07 15:32:09,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:32:09,907 INFO L225 Difference]: With dead ends: 63152 [2021-10-07 15:32:09,907 INFO L226 Difference]: Without dead ends: 63140 [2021-10-07 15:32:09,908 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 5616.0ms TimeCoverageRelationStatistics Valid=371, Invalid=1351, Unknown=0, NotChecked=0, Total=1722 [2021-10-07 15:32:09,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63140 states. [2021-10-07 15:32:12,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63140 to 42330. [2021-10-07 15:32:12,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42330 states, 42329 states have (on average 6.26896453967729) internal successors, (265359), 42329 states have internal predecessors, (265359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:32:12,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42330 states to 42330 states and 265359 transitions. [2021-10-07 15:32:12,947 INFO L78 Accepts]: Start accepts. Automaton has 42330 states and 265359 transitions. Word has length 26 [2021-10-07 15:32:12,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:32:12,947 INFO L470 AbstractCegarLoop]: Abstraction has 42330 states and 265359 transitions. [2021-10-07 15:32:12,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.2) internal successors, (48), 14 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:32:12,947 INFO L276 IsEmpty]: Start isEmpty. Operand 42330 states and 265359 transitions. [2021-10-07 15:32:13,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-07 15:32:13,131 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:32:13,131 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:32:13,148 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (93)] Forceful destruction successful, exit code 0 [2021-10-07 15:32:13,332 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 [2021-10-07 15:32:13,332 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:32:13,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:32:13,333 INFO L82 PathProgramCache]: Analyzing trace with hash 509997612, now seen corresponding path program 28 times [2021-10-07 15:32:13,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:32:13,334 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1876070100] [2021-10-07 15:32:13,334 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:32:13,334 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:32:13,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:32:13,335 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) [2021-10-07 15:32:13,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (94)] Waiting until timeout for monitored process [2021-10-07 15:32:14,998 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:32:14,998 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:32:15,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 15:32:15,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:32:15,593 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:32:15,593 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:32:15,928 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:32:15,929 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:32:15,929 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1876070100] [2021-10-07 15:32:15,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1876070100] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:32:15,929 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:32:15,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-07 15:32:15,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413416506] [2021-10-07 15:32:15,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:32:15,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:32:15,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:32:15,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:32:15,930 INFO L87 Difference]: Start difference. First operand 42330 states and 265359 transitions. Second operand has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 13 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) [2021-10-07 15:32:19,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:32:19,597 INFO L93 Difference]: Finished difference Result 78810 states and 453285 transitions. [2021-10-07 15:32:19,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-07 15:32:19,597 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 13 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 26 [2021-10-07 15:32:19,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:32:20,907 INFO L225 Difference]: With dead ends: 78810 [2021-10-07 15:32:20,907 INFO L226 Difference]: Without dead ends: 78810 [2021-10-07 15:32:20,908 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1044.1ms TimeCoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2021-10-07 15:32:21,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78810 states. [2021-10-07 15:32:24,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78810 to 45138. [2021-10-07 15:32:24,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45138 states, 45137 states have (on average 6.334093980548109) internal successors, (285902), 45137 states have internal predecessors, (285902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:32:25,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45138 states to 45138 states and 285902 transitions. [2021-10-07 15:32:25,012 INFO L78 Accepts]: Start accepts. Automaton has 45138 states and 285902 transitions. Word has length 26 [2021-10-07 15:32:25,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:32:25,012 INFO L470 AbstractCegarLoop]: Abstraction has 45138 states and 285902 transitions. [2021-10-07 15:32:25,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 13 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) [2021-10-07 15:32:25,012 INFO L276 IsEmpty]: Start isEmpty. Operand 45138 states and 285902 transitions. [2021-10-07 15:32:25,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-07 15:32:25,250 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:32:25,250 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:32:25,268 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (94)] Forceful destruction successful, exit code 0 [2021-10-07 15:32:25,450 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 [2021-10-07 15:32:25,451 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:32:25,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:32:25,452 INFO L82 PathProgramCache]: Analyzing trace with hash 1986467499, now seen corresponding path program 29 times [2021-10-07 15:32:25,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:32:25,453 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1510893320] [2021-10-07 15:32:25,453 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:32:25,453 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:32:25,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:32:25,456 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) [2021-10-07 15:32:25,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (95)] Waiting until timeout for monitored process [2021-10-07 15:32:27,096 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-07 15:32:27,096 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:32:27,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-07 15:32:27,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:32:27,335 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:32:27,335 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:32:28,117 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:32:28,117 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:32:28,117 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1510893320] [2021-10-07 15:32:28,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1510893320] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:32:28,117 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:32:28,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-10-07 15:32:28,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385573811] [2021-10-07 15:32:28,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-07 15:32:28,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:32:28,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-07 15:32:28,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-10-07 15:32:28,119 INFO L87 Difference]: Start difference. First operand 45138 states and 285902 transitions. Second operand has 15 states, 15 states have (on average 2.533333333333333) 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) [2021-10-07 15:32:38,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:32:38,881 INFO L93 Difference]: Finished difference Result 71464 states and 414111 transitions. [2021-10-07 15:32:38,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-07 15:32:38,882 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.533333333333333) 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 26 [2021-10-07 15:32:38,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:32:39,415 INFO L225 Difference]: With dead ends: 71464 [2021-10-07 15:32:39,416 INFO L226 Difference]: Without dead ends: 71436 [2021-10-07 15:32:39,416 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 3441.8ms TimeCoverageRelationStatistics Valid=135, Invalid=795, Unknown=0, NotChecked=0, Total=930 [2021-10-07 15:32:39,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71436 states. [2021-10-07 15:32:41,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71436 to 45908. [2021-10-07 15:32:41,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45908 states, 45907 states have (on average 6.32698716971268) internal successors, (290453), 45907 states have internal predecessors, (290453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:32:42,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45908 states to 45908 states and 290453 transitions. [2021-10-07 15:32:42,602 INFO L78 Accepts]: Start accepts. Automaton has 45908 states and 290453 transitions. Word has length 26 [2021-10-07 15:32:42,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:32:42,602 INFO L470 AbstractCegarLoop]: Abstraction has 45908 states and 290453 transitions. [2021-10-07 15:32:42,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.533333333333333) 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) [2021-10-07 15:32:42,602 INFO L276 IsEmpty]: Start isEmpty. Operand 45908 states and 290453 transitions. [2021-10-07 15:32:42,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-07 15:32:42,779 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:32:42,779 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:32:42,795 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (95)] Forceful destruction successful, exit code 0 [2021-10-07 15:32:42,979 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 [2021-10-07 15:32:42,980 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:32:42,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:32:42,981 INFO L82 PathProgramCache]: Analyzing trace with hash -765008981, now seen corresponding path program 30 times [2021-10-07 15:32:42,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:32:42,982 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [369953839] [2021-10-07 15:32:42,982 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:32:42,982 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:32:42,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:32:42,983 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) [2021-10-07 15:32:42,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (96)] Waiting until timeout for monitored process [2021-10-07 15:32:45,223 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-07 15:32:45,223 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:32:45,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 15:32:45,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:32:47,483 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:32:47,483 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:32:47,802 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:32:47,803 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:32:47,803 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [369953839] [2021-10-07 15:32:47,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [369953839] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:32:47,803 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:32:47,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-07 15:32:47,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483131202] [2021-10-07 15:32:47,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:32:47,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:32:47,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:32:47,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=144, Unknown=1, NotChecked=0, Total=182 [2021-10-07 15:32:47,805 INFO L87 Difference]: Start difference. First operand 45908 states and 290453 transitions. Second operand has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 13 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) [2021-10-07 15:32:59,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:32:59,683 INFO L93 Difference]: Finished difference Result 76826 states and 440298 transitions. [2021-10-07 15:32:59,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-07 15:32:59,684 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 13 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 26 [2021-10-07 15:32:59,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:33:00,629 INFO L225 Difference]: With dead ends: 76826 [2021-10-07 15:33:00,629 INFO L226 Difference]: Without dead ends: 76826 [2021-10-07 15:33:00,630 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 6806.3ms TimeCoverageRelationStatistics Valid=105, Invalid=445, Unknown=2, NotChecked=0, Total=552 [2021-10-07 15:33:00,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76826 states. [2021-10-07 15:33:03,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76826 to 46310. [2021-10-07 15:33:03,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46310 states, 46309 states have (on average 6.329331231510074) internal successors, (293105), 46309 states have internal predecessors, (293105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:33:03,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46310 states to 46310 states and 293105 transitions. [2021-10-07 15:33:03,737 INFO L78 Accepts]: Start accepts. Automaton has 46310 states and 293105 transitions. Word has length 26 [2021-10-07 15:33:03,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:33:03,737 INFO L470 AbstractCegarLoop]: Abstraction has 46310 states and 293105 transitions. [2021-10-07 15:33:03,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 13 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) [2021-10-07 15:33:03,737 INFO L276 IsEmpty]: Start isEmpty. Operand 46310 states and 293105 transitions. [2021-10-07 15:33:04,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-07 15:33:04,416 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:33:04,417 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:33:04,439 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (96)] Forceful destruction successful, exit code 0 [2021-10-07 15:33:04,632 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 [2021-10-07 15:33:04,632 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:33:04,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:33:04,633 INFO L82 PathProgramCache]: Analyzing trace with hash 2131821726, now seen corresponding path program 31 times [2021-10-07 15:33:04,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:33:04,633 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1849113249] [2021-10-07 15:33:04,634 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:33:04,634 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:33:04,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:33:04,635 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) [2021-10-07 15:33:04,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (97)] Waiting until timeout for monitored process [2021-10-07 15:33:06,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:33:06,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 15:33:06,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:33:08,563 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:33:08,563 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:33:08,857 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:33:08,858 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:33:08,858 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1849113249] [2021-10-07 15:33:08,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1849113249] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:33:08,858 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:33:08,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-07 15:33:08,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131653818] [2021-10-07 15:33:08,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:33:08,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:33:08,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:33:08,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=142, Unknown=1, NotChecked=0, Total=182 [2021-10-07 15:33:08,861 INFO L87 Difference]: Start difference. First operand 46310 states and 293105 transitions. Second operand has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 13 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) [2021-10-07 15:33:23,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:33:23,583 INFO L93 Difference]: Finished difference Result 66032 states and 385786 transitions. [2021-10-07 15:33:23,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-07 15:33:23,584 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 13 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 26 [2021-10-07 15:33:23,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:33:24,384 INFO L225 Difference]: With dead ends: 66032 [2021-10-07 15:33:24,384 INFO L226 Difference]: Without dead ends: 65914 [2021-10-07 15:33:24,385 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 10737.9ms TimeCoverageRelationStatistics Valid=110, Invalid=350, Unknown=2, NotChecked=0, Total=462 [2021-10-07 15:33:24,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65914 states. [2021-10-07 15:33:26,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65914 to 47448. [2021-10-07 15:33:26,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47448 states, 47447 states have (on average 6.350243429510822) internal successors, (301300), 47447 states have internal predecessors, (301300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:33:27,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47448 states to 47448 states and 301300 transitions. [2021-10-07 15:33:27,260 INFO L78 Accepts]: Start accepts. Automaton has 47448 states and 301300 transitions. Word has length 26 [2021-10-07 15:33:27,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:33:27,261 INFO L470 AbstractCegarLoop]: Abstraction has 47448 states and 301300 transitions. [2021-10-07 15:33:27,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 13 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) [2021-10-07 15:33:27,261 INFO L276 IsEmpty]: Start isEmpty. Operand 47448 states and 301300 transitions. [2021-10-07 15:33:27,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-07 15:33:27,508 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:33:27,509 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:33:27,524 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (97)] Forceful destruction successful, exit code 0 [2021-10-07 15:33:27,709 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 [2021-10-07 15:33:27,709 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-07 15:33:27,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:33:27,710 INFO L82 PathProgramCache]: Analyzing trace with hash 1810423696, now seen corresponding path program 32 times [2021-10-07 15:33:27,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:33:27,711 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [523215887] [2021-10-07 15:33:27,711 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:33:27,711 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:33:27,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:33:27,712 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) [2021-10-07 15:33:27,713 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (98)] Waiting until timeout for monitored process [2021-10-07 15:33:29,505 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:33:29,505 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:33:29,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 15:33:29,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:33:30,272 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:33:30,272 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:33:30,643 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:33:30,643 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:33:30,643 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [523215887] [2021-10-07 15:33:30,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [523215887] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:33:30,643 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:33:30,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-07 15:33:30,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933560269] [2021-10-07 15:33:30,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:33:30,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:33:30,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:33:30,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:33:30,644 INFO L87 Difference]: Start difference. First operand 47448 states and 301300 transitions. Second operand has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 13 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) Received shutdown request... [2021-10-07 15:33:46,921 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (98)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-07 15:33:46,922 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-07 15:33:47,943 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (98)] Forceful destruction successful, exit code 0 [2021-10-07 15:33:47,956 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK [2021-10-07 15:33:47,957 WARN L594 AbstractCegarLoop]: Verification canceled: while executing Executor. [2021-10-07 15:33:47,959 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-07 15:33:47,959 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-07 15:33:47,959 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-07 15:33:47,968 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-07 15:33:47,968 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-07 15:33:47,969 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-07 15:33:47,972 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-07 15:33:47,972 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-07 15:33:47,972 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-07 15:33:47,972 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-07 15:33:47,973 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr10REQUIRES_VIOLATION [2021-10-07 15:33:47,973 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr11REQUIRES_VIOLATION [2021-10-07 15:33:47,973 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr12REQUIRES_VIOLATION [2021-10-07 15:33:47,973 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr13REQUIRES_VIOLATION [2021-10-07 15:33:47,974 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr14REQUIRES_VIOLATION [2021-10-07 15:33:47,977 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr15REQUIRES_VIOLATION [2021-10-07 15:33:47,978 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK [2021-10-07 15:33:47,979 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-07 15:33:47,979 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-07 15:33:47,983 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-07 15:33:47,983 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3INUSE_VIOLATION [2021-10-07 15:33:47,998 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-07 15:33:47,999 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-07 15:33:48,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.10 03:33:48 BasicIcfg [2021-10-07 15:33:48,010 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-07 15:33:48,013 INFO L168 Benchmark]: Toolchain (without parser) took 769061.34 ms. Allocated memory was 160.4 MB in the beginning and 7.0 GB in the end (delta: 6.9 GB). Free memory was 135.1 MB in the beginning and 4.7 GB in the end (delta: -4.6 GB). Peak memory consumption was 2.3 GB. Max. memory is 8.0 GB. [2021-10-07 15:33:48,019 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 160.4 MB. Free memory is still 131.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-07 15:33:48,020 INFO L168 Benchmark]: CACSL2BoogieTranslator took 467.86 ms. Allocated memory is still 160.4 MB. Free memory was 134.7 MB in the beginning and 124.0 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-10-07 15:33:48,022 INFO L168 Benchmark]: Boogie Procedure Inliner took 84.48 ms. Allocated memory is still 160.4 MB. Free memory was 123.8 MB in the beginning and 122.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-07 15:33:48,023 INFO L168 Benchmark]: Boogie Preprocessor took 68.07 ms. Allocated memory is still 160.4 MB. Free memory was 122.1 MB in the beginning and 120.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-07 15:33:48,023 INFO L168 Benchmark]: RCFGBuilder took 746.16 ms. Allocated memory is still 160.4 MB. Free memory was 120.7 MB in the beginning and 139.0 MB in the end (delta: -18.3 MB). Peak memory consumption was 16.2 MB. Max. memory is 8.0 GB. [2021-10-07 15:33:48,025 INFO L168 Benchmark]: TraceAbstraction took 767677.85 ms. Allocated memory was 160.4 MB in the beginning and 7.0 GB in the end (delta: 6.9 GB). Free memory was 138.5 MB in the beginning and 4.7 GB in the end (delta: -4.6 GB). Peak memory consumption was 2.3 GB. Max. memory is 8.0 GB. [2021-10-07 15:33:48,032 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 160.4 MB. Free memory is still 131.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 467.86 ms. Allocated memory is still 160.4 MB. Free memory was 134.7 MB in the beginning and 124.0 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 84.48 ms. Allocated memory is still 160.4 MB. Free memory was 123.8 MB in the beginning and 122.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 68.07 ms. Allocated memory is still 160.4 MB. Free memory was 122.1 MB in the beginning and 120.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 746.16 ms. Allocated memory is still 160.4 MB. Free memory was 120.7 MB in the beginning and 139.0 MB in the end (delta: -18.3 MB). Peak memory consumption was 16.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 767677.85 ms. Allocated memory was 160.4 MB in the beginning and 7.0 GB in the end (delta: 6.9 GB). Free memory was 138.5 MB in the beginning and 4.7 GB in the end (delta: -4.6 GB). Peak memory consumption was 2.3 GB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 19698.4ms, 144 PlacesBefore, 56 PlacesAfterwards, 141 TransitionsBefore, 47 TransitionsAfterwards, 1960 CoEnabledTransitionPairs, 7 FixpointIterations, 68 TrivialSequentialCompositions, 53 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 8 ConcurrentYvCompositions, 6 ChoiceCompositions, 136 TotalNumberOfCompositions, 2465 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2465, positive: 2465, positive conditional: 0, positive unconditional: 2465, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1267, positive: 1267, positive conditional: 0, positive unconditional: 1267, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1267, positive: 1267, positive conditional: 0, positive unconditional: 1267, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2465, positive: 1198, positive conditional: 0, positive unconditional: 1198, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 1267, unknown conditional: 0, unknown unconditional: 1267] , Statistics on independence cache: Total cache size (in pairs): 116, Positive cache size: 116, Positive conditional cache size: 0, Positive unconditional cache size: 116, 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: 96]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while executing Executor. - TimeoutResultAtElement [Line: 86]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 86]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 87]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 87]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 88]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 88]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 89]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 89]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 90]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 90]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 91]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 91]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 92]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 92]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 93]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 93]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 73]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while executing Executor. - TimeoutResultAtElement [Line: 88]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - TimeoutResultAtElement [Line: 87]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - TimeoutResultAtElement [Line: 89]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - TimeoutResultAtElement [Line: 86]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 160 locations, 22 error locations. Started 1 CEGAR loops. OverallTime: 767495.9ms, OverallIterations: 97, TraceHistogramMax: 3, EmptinessCheckTime: 7133.2ms, AutomataDifference: 458170.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 19769.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 6983 SDtfs, 19714 SDslu, 39602 SDs, 0 SdLazy, 34453 SolverSat, 1293 SolverUnsat, 62 SolverUnknown, 0 SolverNotchecked, 296278.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4839 GetRequests, 3371 SyntacticMatches, 0 SemanticMatches, 1468 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3724 ImplicationChecksByTransitivity, 171577.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=47448occurred in iteration=96, InterpolantAutomatonStates: 1401, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 69756.9ms AutomataMinimizationTime, 96 MinimizatonAttempts, 462552 StatesRemovedByMinimization, 86 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 927.5ms SsaConstructionTime, 13371.0ms SatisfiabilityAnalysisTime, 105500.4ms InterpolantComputationTime, 2237 NumberOfCodeBlocks, 2237 NumberOfCodeBlocksAsserted, 187 NumberOfCheckSat, 4280 ConstructedInterpolants, 552 QuantifiedInterpolants, 44322 SizeOfPredicates, 478 NumberOfNonLiveVariables, 10971 ConjunctsInSsa, 864 ConjunctsInUnsatCore, 194 InterpolantComputations, 24 PerfectInterpolantSequences, 190/1030 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