/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 [2021-10-08 16:35:18,967 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-08 16:35:18,970 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-08 16:35:19,011 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-08 16:35:19,026 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-08 16:35:19,027 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-08 16:35:19,029 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-08 16:35:19,031 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-08 16:35:19,033 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-08 16:35:19,034 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-08 16:35:19,036 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-08 16:35:19,039 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-08 16:35:19,057 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-08 16:35:19,058 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-08 16:35:19,060 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-08 16:35:19,061 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-08 16:35:19,069 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-10-08 16:35:19,077 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-08 16:35:19,078 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-08 16:35:19,079 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-08 16:35:19,080 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-08 16:35:19,083 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-08 16:35:19,084 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-08 16:35:19,085 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-08 16:35:19,085 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-08 16:35:19,085 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-08 16:35:19,087 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-08 16:35:19,089 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-08 16:35:19,090 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-08 16:35:19,156 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-08 16:35:19,157 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-08 16:35:19,157 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-08 16:35:19,158 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-08 16:35:19,162 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-08 16:35:19,162 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-08 16:35:19,162 INFO L138 SettingsManager]: * Use SBE=true [2021-10-08 16:35:19,163 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-08 16:35:19,163 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-08 16:35:19,163 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-08 16:35:19,164 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-08 16:35:19,165 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-08 16:35:19,165 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-08 16:35:19,165 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-08 16:35:19,165 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-08 16:35:19,165 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-08 16:35:19,166 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-08 16:35:19,166 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-08 16:35:19,166 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-08 16:35:19,166 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-08 16:35:19,167 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-08 16:35:19,167 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-08 16:35:19,167 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-08 16:35:19,167 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-08 16:35:19,168 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-08 16:35:19,168 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-08 16:35:19,168 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-08 16:35:19,168 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-08 16:35:19,168 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-08 16:35:19,169 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-08 16:35:19,169 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-08 16:35:19,169 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-08 16:35:19,170 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-08 16:35:19,702 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-08 16:35:19,752 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-08 16:35:19,755 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-08 16:35:19,757 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-08 16:35:19,758 INFO L275 PluginConnector]: CDTParser initialized [2021-10-08 16:35:19,759 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/bench-exp2x4.wvr.c [2021-10-08 16:35:19,854 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/579401c54/a70219a075a14c54b5c24462fb922399/FLAGcbb3e9308 [2021-10-08 16:35:20,524 INFO L306 CDTParser]: Found 1 translation units. [2021-10-08 16:35:20,525 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/bench-exp2x4.wvr.c [2021-10-08 16:35:20,536 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/579401c54/a70219a075a14c54b5c24462fb922399/FLAGcbb3e9308 [2021-10-08 16:35:20,858 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/579401c54/a70219a075a14c54b5c24462fb922399 [2021-10-08 16:35:20,861 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-08 16:35:20,871 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-08 16:35:20,872 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-08 16:35:20,873 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-08 16:35:20,877 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-08 16:35:20,878 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.10 04:35:20" (1/1) ... [2021-10-08 16:35:20,879 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41d0f8cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:35:20, skipping insertion in model container [2021-10-08 16:35:20,880 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.10 04:35:20" (1/1) ... [2021-10-08 16:35:20,888 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-08 16:35:20,908 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-08 16:35:21,139 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] [2021-10-08 16:35:21,143 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 16:35:21,160 INFO L203 MainTranslator]: Completed pre-run [2021-10-08 16:35:21,191 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] [2021-10-08 16:35:21,192 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 16:35:21,213 INFO L208 MainTranslator]: Completed translation [2021-10-08 16:35:21,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:35:21 WrapperNode [2021-10-08 16:35:21,214 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-08 16:35:21,216 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-08 16:35:21,216 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-08 16:35:21,217 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-08 16:35:21,226 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:35:21" (1/1) ... [2021-10-08 16:35:21,239 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:35:21" (1/1) ... [2021-10-08 16:35:21,267 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-08 16:35:21,268 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-08 16:35:21,268 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-08 16:35:21,268 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-08 16:35:21,279 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:35:21" (1/1) ... [2021-10-08 16:35:21,280 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:35:21" (1/1) ... [2021-10-08 16:35:21,284 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:35:21" (1/1) ... [2021-10-08 16:35:21,285 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:35:21" (1/1) ... [2021-10-08 16:35:21,294 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:35:21" (1/1) ... [2021-10-08 16:35:21,301 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:35:21" (1/1) ... [2021-10-08 16:35:21,303 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:35:21" (1/1) ... [2021-10-08 16:35:21,307 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-08 16:35:21,308 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-08 16:35:21,309 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-08 16:35:21,309 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-08 16:35:21,310 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:35:21" (1/1) ... [2021-10-08 16:35:21,322 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-08 16:35:21,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:35:21,361 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) [2021-10-08 16:35:21,369 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 [2021-10-08 16:35:21,417 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-08 16:35:21,418 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-08 16:35:21,418 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-08 16:35:21,418 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-08 16:35:21,418 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-08 16:35:21,418 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-08 16:35:21,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-08 16:35:21,419 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-10-08 16:35:21,419 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-10-08 16:35:21,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-08 16:35:21,419 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-08 16:35:21,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-08 16:35:21,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-08 16:35:21,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-08 16:35:21,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-08 16:35:21,422 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-08 16:35:22,056 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-08 16:35:22,056 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-10-08 16:35:22,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 04:35:22 BoogieIcfgContainer [2021-10-08 16:35:22,059 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-08 16:35:22,062 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-08 16:35:22,062 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-08 16:35:22,066 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-08 16:35:22,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.10 04:35:20" (1/3) ... [2021-10-08 16:35:22,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@140dc4cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.10 04:35:22, skipping insertion in model container [2021-10-08 16:35:22,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:35:21" (2/3) ... [2021-10-08 16:35:22,068 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@140dc4cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.10 04:35:22, skipping insertion in model container [2021-10-08 16:35:22,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 04:35:22" (3/3) ... [2021-10-08 16:35:22,070 INFO L111 eAbstractionObserver]: Analyzing ICFG bench-exp2x4.wvr.c [2021-10-08 16:35:22,081 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-08 16:35:22,082 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2021-10-08 16:35:22,082 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-08 16:35:22,137 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,137 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,138 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,138 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,139 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,139 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,139 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,140 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,141 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,141 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,142 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,142 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,143 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,143 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,144 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,144 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,156 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,157 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,167 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,168 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,175 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,176 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,181 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,181 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,213 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-10-08 16:35:22,284 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-08 16:35:22,298 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 [2021-10-08 16:35:22,299 INFO L340 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2021-10-08 16:35:22,339 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-08 16:35:22,361 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 144 places, 141 transitions, 314 flow [2021-10-08 16:35:22,367 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 144 places, 141 transitions, 314 flow [2021-10-08 16:35:22,370 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 144 places, 141 transitions, 314 flow [2021-10-08 16:35:22,500 INFO L129 PetriNetUnfolder]: 10/137 cut-off events. [2021-10-08 16:35:22,500 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-10-08 16:35:22,506 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. [2021-10-08 16:35:22,513 INFO L116 LiptonReduction]: Number of co-enabled transitions 1960 [2021-10-08 16:35:45,574 INFO L131 LiptonReduction]: Checked pairs total: 2465 [2021-10-08 16:35:45,574 INFO L133 LiptonReduction]: Total number of compositions: 136 [2021-10-08 16:35:45,582 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 56 places, 47 transitions, 126 flow [2021-10-08 16:35:45,611 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) [2021-10-08 16:35:45,615 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) [2021-10-08 16:35:45,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2021-10-08 16:35:45,621 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:35:45,621 INFO L512 BasicCegarLoop]: trace histogram [1] [2021-10-08 16:35:45,622 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 16:35:45,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:35:45,628 INFO L82 PathProgramCache]: Analyzing trace with hash 520, now seen corresponding path program 1 times [2021-10-08 16:35:45,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:35:45,642 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [60276342] [2021-10-08 16:35:45,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:35:45,644 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:35:45,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:35:45,648 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) [2021-10-08 16:35:45,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-08 16:35:45,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:35:45,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-08 16:35:45,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:35:45,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:35:45,736 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:35:45,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:35:45,738 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:35:45,738 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [60276342] [2021-10-08 16:35:45,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [60276342] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 16:35:45,739 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:35:45,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0, 0] imperfect sequences [] total 0 [2021-10-08 16:35:45,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517471605] [2021-10-08 16:35:45,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-08 16:35:45,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:35:45,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-08 16:35:45,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-08 16:35:45,766 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) [2021-10-08 16:35:45,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:35:45,797 INFO L93 Difference]: Finished difference Result 180 states and 692 transitions. [2021-10-08 16:35:45,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-08 16:35:45,798 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 [2021-10-08 16:35:45,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:35:45,813 INFO L225 Difference]: With dead ends: 180 [2021-10-08 16:35:45,814 INFO L226 Difference]: Without dead ends: 180 [2021-10-08 16:35:45,815 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 [2021-10-08 16:35:45,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2021-10-08 16:35:45,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2021-10-08 16:35:45,869 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) [2021-10-08 16:35:45,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 692 transitions. [2021-10-08 16:35:45,875 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 692 transitions. Word has length 1 [2021-10-08 16:35:45,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:35:45,876 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 692 transitions. [2021-10-08 16:35:45,876 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) [2021-10-08 16:35:45,876 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 692 transitions. [2021-10-08 16:35:45,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-08 16:35:45,877 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:35:45,877 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-08 16:35:45,887 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-08 16:35:46,077 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 [2021-10-08 16:35:46,078 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 16:35:46,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:35:46,080 INFO L82 PathProgramCache]: Analyzing trace with hash 511969, now seen corresponding path program 1 times [2021-10-08 16:35:46,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:35:46,081 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [479970922] [2021-10-08 16:35:46,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:35:46,082 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:35:46,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:35:46,083 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) [2021-10-08 16:35:46,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-08 16:35:46,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:35:46,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-08 16:35:46,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:35:46,381 INFO L354 Elim1Store]: treesize reduction 84, result has 22.9 percent of original size [2021-10-08 16:35:46,382 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 [2021-10-08 16:35:46,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:35:46,575 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:35:46,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:35:46,592 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:35:46,592 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [479970922] [2021-10-08 16:35:46,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [479970922] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 16:35:46,593 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:35:46,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-08 16:35:46,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828530164] [2021-10-08 16:35:46,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 16:35:46,595 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:35:46,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 16:35:46,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 16:35:46,596 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) [2021-10-08 16:35:46,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:35:46,670 INFO L93 Difference]: Finished difference Result 170 states and 656 transitions. [2021-10-08 16:35:46,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:35:46,671 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 [2021-10-08 16:35:46,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:35:46,675 INFO L225 Difference]: With dead ends: 170 [2021-10-08 16:35:46,675 INFO L226 Difference]: Without dead ends: 170 [2021-10-08 16:35:46,676 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 16:35:46,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-10-08 16:35:46,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2021-10-08 16:35:46,693 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) [2021-10-08 16:35:46,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 656 transitions. [2021-10-08 16:35:46,696 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 656 transitions. Word has length 3 [2021-10-08 16:35:46,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:35:46,699 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 656 transitions. [2021-10-08 16:35:46,699 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) [2021-10-08 16:35:46,699 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 656 transitions. [2021-10-08 16:35:46,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-08 16:35:46,700 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:35:46,700 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-08 16:35:46,717 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-08 16:35:46,913 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 [2021-10-08 16:35:46,914 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 16:35:46,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:35:46,916 INFO L82 PathProgramCache]: Analyzing trace with hash 511970, now seen corresponding path program 1 times [2021-10-08 16:35:46,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:35:46,917 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2092982401] [2021-10-08 16:35:46,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:35:46,917 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:35:46,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:35:46,922 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) [2021-10-08 16:35:46,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-08 16:35:46,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:35:46,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 16:35:46,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:35:47,255 INFO L354 Elim1Store]: treesize reduction 231, result has 19.2 percent of original size [2021-10-08 16:35:47,256 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 [2021-10-08 16:35:47,281 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 [2021-10-08 16:35:47,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:35:47,528 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:35:47,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:35:47,582 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:35:47,582 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2092982401] [2021-10-08 16:35:47,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2092982401] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 16:35:47,582 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:35:47,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-08 16:35:47,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827575785] [2021-10-08 16:35:47,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 16:35:47,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:35:47,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 16:35:47,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 16:35:47,584 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) [2021-10-08 16:35:47,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:35:47,670 INFO L93 Difference]: Finished difference Result 160 states and 620 transitions. [2021-10-08 16:35:47,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:35:47,671 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 [2021-10-08 16:35:47,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:35:47,674 INFO L225 Difference]: With dead ends: 160 [2021-10-08 16:35:47,674 INFO L226 Difference]: Without dead ends: 160 [2021-10-08 16:35:47,675 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 59.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 16:35:47,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-10-08 16:35:47,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2021-10-08 16:35:47,687 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) [2021-10-08 16:35:47,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 620 transitions. [2021-10-08 16:35:47,689 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 620 transitions. Word has length 3 [2021-10-08 16:35:47,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:35:47,690 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 620 transitions. [2021-10-08 16:35:47,690 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) [2021-10-08 16:35:47,690 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 620 transitions. [2021-10-08 16:35:47,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-08 16:35:47,691 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:35:47,691 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-08 16:35:47,705 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-08 16:35:47,903 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 [2021-10-08 16:35:47,904 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 16:35:47,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:35:47,905 INFO L82 PathProgramCache]: Analyzing trace with hash 492012408, now seen corresponding path program 1 times [2021-10-08 16:35:47,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:35:47,907 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [312895933] [2021-10-08 16:35:47,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:35:47,908 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:35:47,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:35:47,909 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) [2021-10-08 16:35:47,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-08 16:35:47,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:35:47,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-08 16:35:47,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:35:48,061 INFO L354 Elim1Store]: treesize reduction 84, result has 22.9 percent of original size [2021-10-08 16:35:48,062 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 [2021-10-08 16:35:48,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:35:48,476 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:35:48,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:35:48,502 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:35:48,502 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [312895933] [2021-10-08 16:35:48,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [312895933] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 16:35:48,503 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:35:48,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-08 16:35:48,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959683711] [2021-10-08 16:35:48,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 16:35:48,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:35:48,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 16:35:48,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 16:35:48,505 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) [2021-10-08 16:35:48,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:35:48,571 INFO L93 Difference]: Finished difference Result 152 states and 596 transitions. [2021-10-08 16:35:48,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:35:48,572 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 [2021-10-08 16:35:48,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:35:48,575 INFO L225 Difference]: With dead ends: 152 [2021-10-08 16:35:48,575 INFO L226 Difference]: Without dead ends: 152 [2021-10-08 16:35:48,576 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.6ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 16:35:48,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-10-08 16:35:48,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2021-10-08 16:35:48,585 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) [2021-10-08 16:35:48,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 596 transitions. [2021-10-08 16:35:48,587 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 596 transitions. Word has length 5 [2021-10-08 16:35:48,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:35:48,587 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 596 transitions. [2021-10-08 16:35:48,588 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) [2021-10-08 16:35:48,588 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 596 transitions. [2021-10-08 16:35:48,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-08 16:35:48,588 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:35:48,588 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-08 16:35:48,601 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-08 16:35:48,800 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 [2021-10-08 16:35:48,801 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 16:35:48,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:35:48,802 INFO L82 PathProgramCache]: Analyzing trace with hash 492012410, now seen corresponding path program 1 times [2021-10-08 16:35:48,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:35:48,804 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [899676731] [2021-10-08 16:35:48,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:35:48,804 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:35:48,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:35:48,805 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) [2021-10-08 16:35:48,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-08 16:35:48,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:35:48,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 16:35:48,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:35:49,134 INFO L354 Elim1Store]: treesize reduction 231, result has 19.2 percent of original size [2021-10-08 16:35:49,135 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 [2021-10-08 16:35:49,143 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 [2021-10-08 16:35:49,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:35:49,648 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:35:49,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:35:49,728 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:35:49,728 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [899676731] [2021-10-08 16:35:49,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [899676731] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 16:35:49,728 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:35:49,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-08 16:35:49,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95160914] [2021-10-08 16:35:49,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 16:35:49,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:35:49,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 16:35:49,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 16:35:49,730 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) [2021-10-08 16:35:49,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:35:49,790 INFO L93 Difference]: Finished difference Result 144 states and 572 transitions. [2021-10-08 16:35:49,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:35:49,791 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 [2021-10-08 16:35:49,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:35:49,794 INFO L225 Difference]: With dead ends: 144 [2021-10-08 16:35:49,794 INFO L226 Difference]: Without dead ends: 144 [2021-10-08 16:35:49,794 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 16:35:49,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-10-08 16:35:49,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2021-10-08 16:35:49,802 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) [2021-10-08 16:35:49,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 572 transitions. [2021-10-08 16:35:49,803 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 572 transitions. Word has length 5 [2021-10-08 16:35:49,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:35:49,804 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 572 transitions. [2021-10-08 16:35:49,804 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) [2021-10-08 16:35:49,804 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 572 transitions. [2021-10-08 16:35:49,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-08 16:35:49,805 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:35:49,805 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:35:49,821 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-10-08 16:35:50,017 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 [2021-10-08 16:35:50,018 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 16:35:50,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:35:50,019 INFO L82 PathProgramCache]: Analyzing trace with hash 377533841, now seen corresponding path program 1 times [2021-10-08 16:35:50,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:35:50,020 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [836607156] [2021-10-08 16:35:50,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:35:50,021 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:35:50,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:35:50,022 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) [2021-10-08 16:35:50,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-08 16:35:50,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:35:50,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-08 16:35:50,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:35:50,333 INFO L354 Elim1Store]: treesize reduction 231, result has 19.2 percent of original size [2021-10-08 16:35:50,334 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 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 [2021-10-08 16:35:50,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:35:50,456 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:35:50,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:35:50,557 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:35:50,557 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [836607156] [2021-10-08 16:35:50,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [836607156] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 16:35:50,557 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:35:50,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-08 16:35:50,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624360906] [2021-10-08 16:35:50,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 16:35:50,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:35:50,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 16:35:50,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 16:35:50,559 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) [2021-10-08 16:35:50,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:35:50,600 INFO L93 Difference]: Finished difference Result 134 states and 536 transitions. [2021-10-08 16:35:50,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:35:50,601 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 [2021-10-08 16:35:50,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:35:50,604 INFO L225 Difference]: With dead ends: 134 [2021-10-08 16:35:50,604 INFO L226 Difference]: Without dead ends: 134 [2021-10-08 16:35:50,604 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 16:35:50,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-10-08 16:35:50,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2021-10-08 16:35:50,610 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) [2021-10-08 16:35:50,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 536 transitions. [2021-10-08 16:35:50,612 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 536 transitions. Word has length 7 [2021-10-08 16:35:50,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:35:50,613 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 536 transitions. [2021-10-08 16:35:50,613 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) [2021-10-08 16:35:50,613 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 536 transitions. [2021-10-08 16:35:50,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-08 16:35:50,614 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:35:50,614 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:35:50,626 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-08 16:35:50,825 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 [2021-10-08 16:35:50,826 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 16:35:50,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:35:50,828 INFO L82 PathProgramCache]: Analyzing trace with hash 377533843, now seen corresponding path program 1 times [2021-10-08 16:35:50,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:35:50,829 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [400217419] [2021-10-08 16:35:50,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:35:50,829 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:35:50,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:35:50,831 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) [2021-10-08 16:35:50,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-08 16:35:50,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:35:50,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-08 16:35:50,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:35:50,956 INFO L354 Elim1Store]: treesize reduction 84, result has 22.9 percent of original size [2021-10-08 16:35:50,957 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 [2021-10-08 16:35:51,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:35:51,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:35:51,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:35:51,025 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:35:51,025 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [400217419] [2021-10-08 16:35:51,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [400217419] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 16:35:51,025 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:35:51,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-08 16:35:51,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789892034] [2021-10-08 16:35:51,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 16:35:51,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:35:51,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 16:35:51,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:35:51,027 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) [2021-10-08 16:35:51,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:35:51,058 INFO L93 Difference]: Finished difference Result 124 states and 500 transitions. [2021-10-08 16:35:51,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:35:51,059 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 [2021-10-08 16:35:51,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:35:51,061 INFO L225 Difference]: With dead ends: 124 [2021-10-08 16:35:51,061 INFO L226 Difference]: Without dead ends: 124 [2021-10-08 16:35:51,061 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:35:51,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-10-08 16:35:51,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2021-10-08 16:35:51,067 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) [2021-10-08 16:35:51,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 500 transitions. [2021-10-08 16:35:51,068 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 500 transitions. Word has length 7 [2021-10-08 16:35:51,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:35:51,069 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 500 transitions. [2021-10-08 16:35:51,069 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) [2021-10-08 16:35:51,069 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 500 transitions. [2021-10-08 16:35:51,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-08 16:35:51,070 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:35:51,070 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:35:51,084 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-08 16:35:51,271 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 [2021-10-08 16:35:51,271 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 16:35:51,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:35:51,273 INFO L82 PathProgramCache]: Analyzing trace with hash 2032780505, now seen corresponding path program 1 times [2021-10-08 16:35:51,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:35:51,274 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1252205147] [2021-10-08 16:35:51,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:35:51,274 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:35:51,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:35:51,275 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) [2021-10-08 16:35:51,276 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-08 16:35:51,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:35:51,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-08 16:35:51,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:35:51,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:35:51,473 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:35:51,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:35:51,581 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:35:51,581 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1252205147] [2021-10-08 16:35:51,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1252205147] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 16:35:51,582 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:35:51,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-08 16:35:51,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044064128] [2021-10-08 16:35:51,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 16:35:51,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:35:51,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 16:35:51,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:35:51,584 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) [2021-10-08 16:35:51,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:35:51,623 INFO L93 Difference]: Finished difference Result 108 states and 420 transitions. [2021-10-08 16:35:51,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:35:51,625 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 [2021-10-08 16:35:51,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:35:51,627 INFO L225 Difference]: With dead ends: 108 [2021-10-08 16:35:51,627 INFO L226 Difference]: Without dead ends: 108 [2021-10-08 16:35:51,627 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:35:51,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-10-08 16:35:51,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2021-10-08 16:35:51,632 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) [2021-10-08 16:35:51,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 420 transitions. [2021-10-08 16:35:51,633 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 420 transitions. Word has length 9 [2021-10-08 16:35:51,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:35:51,634 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 420 transitions. [2021-10-08 16:35:51,634 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) [2021-10-08 16:35:51,634 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 420 transitions. [2021-10-08 16:35:51,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-08 16:35:51,636 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:35:51,636 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:35:51,648 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-08 16:35:51,847 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 [2021-10-08 16:35:51,848 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-08 16:35:51,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:35:51,849 INFO L82 PathProgramCache]: Analyzing trace with hash 2032780506, now seen corresponding path program 1 times [2021-10-08 16:35:51,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:35:51,850 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1122531299] [2021-10-08 16:35:51,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:35:51,851 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:35:51,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:35:51,852 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) [2021-10-08 16:35:51,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-08 16:35:51,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:35:51,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 16:35:51,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:35:52,029 INFO L354 Elim1Store]: treesize reduction 84, result has 22.9 percent of original size [2021-10-08 16:35:52,030 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 [2021-10-08 16:35:52,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:35:52,241 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:35:52,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:35:52,312 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:35:52,312 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1122531299] [2021-10-08 16:35:52,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1122531299] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 16:35:52,313 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:35:52,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-10-08 16:35:52,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770501362] [2021-10-08 16:35:52,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-08 16:35:52,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:35:52,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-08 16:35:52,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-08 16:35:52,315 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) [2021-10-08 16:35:52,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:35:52,368 INFO L93 Difference]: Finished difference Result 92 states and 340 transitions. [2021-10-08 16:35:52,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:35:52,369 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 [2021-10-08 16:35:52,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:35:52,371 INFO L225 Difference]: With dead ends: 92 [2021-10-08 16:35:52,371 INFO L226 Difference]: Without dead ends: 92 [2021-10-08 16:35:52,371 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 77.9ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-08 16:35:52,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-10-08 16:35:52,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2021-10-08 16:35:52,375 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) [2021-10-08 16:35:52,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 340 transitions. [2021-10-08 16:35:52,376 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 340 transitions. Word has length 9 [2021-10-08 16:35:52,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:35:52,377 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 340 transitions. [2021-10-08 16:35:52,377 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) [2021-10-08 16:35:52,377 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 340 transitions. [2021-10-08 16:35:52,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-08 16:35:52,379 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:35:52,379 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] [2021-10-08 16:35:52,392 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-08 16:35:52,592 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 [2021-10-08 16:35:52,593 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)] === [2021-10-08 16:35:52,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:35:52,594 INFO L82 PathProgramCache]: Analyzing trace with hash 2012931474, now seen corresponding path program 1 times [2021-10-08 16:35:52,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:35:52,594 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1640223408] [2021-10-08 16:35:52,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:35:52,595 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:35:52,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:35:52,596 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) [2021-10-08 16:35:52,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-08 16:35:52,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:35:52,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-08 16:35:52,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:35:53,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:35:53,084 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:35:53,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:35:53,271 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:35:53,271 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1640223408] [2021-10-08 16:35:53,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1640223408] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 16:35:53,272 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:35:53,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-08 16:35:53,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982345391] [2021-10-08 16:35:53,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 16:35:53,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:35:53,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 16:35:53,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 16:35:53,274 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) [2021-10-08 16:35:53,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:35:53,308 INFO L93 Difference]: Finished difference Result 181 states and 677 transitions. [2021-10-08 16:35:53,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:35:53,309 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 [2021-10-08 16:35:53,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:35:53,311 INFO L225 Difference]: With dead ends: 181 [2021-10-08 16:35:53,311 INFO L226 Difference]: Without dead ends: 172 [2021-10-08 16:35:53,311 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 16:35:53,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2021-10-08 16:35:53,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2021-10-08 16:35:53,319 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) [2021-10-08 16:35:53,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 649 transitions. [2021-10-08 16:35:53,321 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 649 transitions. Word has length 21 [2021-10-08 16:35:53,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:35:53,321 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 649 transitions. [2021-10-08 16:35:53,321 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) [2021-10-08 16:35:53,322 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 649 transitions. [2021-10-08 16:35:53,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 16:35:53,324 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:35:53,324 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] [2021-10-08 16:35:53,340 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-08 16:35:53,537 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 [2021-10-08 16:35:53,537 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)] === [2021-10-08 16:35:53,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:35:53,538 INFO L82 PathProgramCache]: Analyzing trace with hash -522763958, now seen corresponding path program 1 times [2021-10-08 16:35:53,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:35:53,539 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1423869626] [2021-10-08 16:35:53,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:35:53,540 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:35:53,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:35:53,541 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) [2021-10-08 16:35:53,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-08 16:35:53,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:35:53,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 16:35:53,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:35:53,843 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:35:53,843 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:35:53,992 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:35:53,992 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:35:53,992 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1423869626] [2021-10-08 16:35:53,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1423869626] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:35:53,993 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:35:53,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-10-08 16:35:53,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344387719] [2021-10-08 16:35:53,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 16:35:53,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:35:53,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 16:35:53,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-08 16:35:53,995 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) [2021-10-08 16:35:54,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:35:54,325 INFO L93 Difference]: Finished difference Result 602 states and 2219 transitions. [2021-10-08 16:35:54,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-08 16:35:54,326 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 [2021-10-08 16:35:54,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:35:54,332 INFO L225 Difference]: With dead ends: 602 [2021-10-08 16:35:54,332 INFO L226 Difference]: Without dead ends: 602 [2021-10-08 16:35:54,333 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 139.9ms TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-10-08 16:35:54,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2021-10-08 16:35:54,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 260. [2021-10-08 16:35:54,350 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) [2021-10-08 16:35:54,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 1116 transitions. [2021-10-08 16:35:54,352 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 1116 transitions. Word has length 22 [2021-10-08 16:35:54,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:35:54,353 INFO L470 AbstractCegarLoop]: Abstraction has 260 states and 1116 transitions. [2021-10-08 16:35:54,353 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) [2021-10-08 16:35:54,353 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 1116 transitions. [2021-10-08 16:35:54,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 16:35:54,355 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:35:54,355 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] [2021-10-08 16:35:54,371 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-08 16:35:54,568 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 [2021-10-08 16:35:54,569 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)] === [2021-10-08 16:35:54,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:35:54,569 INFO L82 PathProgramCache]: Analyzing trace with hash -2023593266, now seen corresponding path program 1 times [2021-10-08 16:35:54,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:35:54,570 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1394573169] [2021-10-08 16:35:54,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:35:54,571 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:35:54,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:35:54,572 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) [2021-10-08 16:35:54,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-08 16:35:54,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:35:54,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-08 16:35:54,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:35:54,881 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:35:54,882 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:35:54,973 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:35:54,974 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:35:54,974 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1394573169] [2021-10-08 16:35:54,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1394573169] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 16:35:54,974 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:35:54,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-08 16:35:54,975 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813900496] [2021-10-08 16:35:54,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-08 16:35:54,976 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:35:54,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-08 16:35:54,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-08 16:35:54,977 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) [2021-10-08 16:35:55,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:35:55,188 INFO L93 Difference]: Finished difference Result 466 states and 1906 transitions. [2021-10-08 16:35:55,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 16:35:55,189 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 [2021-10-08 16:35:55,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:35:55,195 INFO L225 Difference]: With dead ends: 466 [2021-10-08 16:35:55,195 INFO L226 Difference]: Without dead ends: 450 [2021-10-08 16:35:55,195 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 47.3ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-08 16:35:55,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2021-10-08 16:35:55,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 350. [2021-10-08 16:35:55,212 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) [2021-10-08 16:35:55,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 1547 transitions. [2021-10-08 16:35:55,218 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 1547 transitions. Word has length 22 [2021-10-08 16:35:55,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:35:55,219 INFO L470 AbstractCegarLoop]: Abstraction has 350 states and 1547 transitions. [2021-10-08 16:35:55,219 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) [2021-10-08 16:35:55,219 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 1547 transitions. [2021-10-08 16:35:55,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 16:35:55,221 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:35:55,221 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] [2021-10-08 16:35:55,238 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-10-08 16:35:55,433 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 [2021-10-08 16:35:55,434 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)] === [2021-10-08 16:35:55,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:35:55,434 INFO L82 PathProgramCache]: Analyzing trace with hash 1348611576, now seen corresponding path program 1 times [2021-10-08 16:35:55,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:35:55,435 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1537751104] [2021-10-08 16:35:55,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:35:55,436 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:35:55,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:35:55,437 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) [2021-10-08 16:35:55,438 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-08 16:35:55,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:35:55,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 16:35:55,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:35:55,808 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:35:55,809 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:35:55,983 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:35:55,984 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:35:55,984 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1537751104] [2021-10-08 16:35:55,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1537751104] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:35:55,984 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:35:55,984 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-10-08 16:35:55,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985869155] [2021-10-08 16:35:55,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 16:35:55,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:35:55,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 16:35:55,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-08 16:35:55,987 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) [2021-10-08 16:35:56,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:35:56,312 INFO L93 Difference]: Finished difference Result 836 states and 3675 transitions. [2021-10-08 16:35:56,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-08 16:35:56,313 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 [2021-10-08 16:35:56,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:35:56,324 INFO L225 Difference]: With dead ends: 836 [2021-10-08 16:35:56,324 INFO L226 Difference]: Without dead ends: 836 [2021-10-08 16:35:56,325 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 150.7ms TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-10-08 16:35:56,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2021-10-08 16:35:56,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 512. [2021-10-08 16:35:56,370 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) [2021-10-08 16:35:56,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 2475 transitions. [2021-10-08 16:35:56,375 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 2475 transitions. Word has length 22 [2021-10-08 16:35:56,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:35:56,375 INFO L470 AbstractCegarLoop]: Abstraction has 512 states and 2475 transitions. [2021-10-08 16:35:56,375 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) [2021-10-08 16:35:56,376 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 2475 transitions. [2021-10-08 16:35:56,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 16:35:56,378 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:35:56,378 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] [2021-10-08 16:35:56,398 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-08 16:35:56,592 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 [2021-10-08 16:35:56,593 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)] === [2021-10-08 16:35:56,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:35:56,594 INFO L82 PathProgramCache]: Analyzing trace with hash 424238018, now seen corresponding path program 2 times [2021-10-08 16:35:56,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:35:56,595 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1191828912] [2021-10-08 16:35:56,595 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:35:56,595 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:35:56,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:35:56,597 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) [2021-10-08 16:35:56,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-08 16:35:56,793 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:35:56,793 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:35:56,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-08 16:35:56,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:35:56,964 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:35:56,964 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:35:57,056 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:35:57,056 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:35:57,056 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1191828912] [2021-10-08 16:35:57,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1191828912] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:35:57,057 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:35:57,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2021-10-08 16:35:57,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124332272] [2021-10-08 16:35:57,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-08 16:35:57,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:35:57,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-08 16:35:57,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-08 16:35:57,059 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) [2021-10-08 16:35:57,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:35:57,223 INFO L93 Difference]: Finished difference Result 626 states and 2978 transitions. [2021-10-08 16:35:57,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-08 16:35:57,224 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 [2021-10-08 16:35:57,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:35:57,232 INFO L225 Difference]: With dead ends: 626 [2021-10-08 16:35:57,233 INFO L226 Difference]: Without dead ends: 626 [2021-10-08 16:35:57,233 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 44.9ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-08 16:35:57,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2021-10-08 16:35:57,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 568. [2021-10-08 16:35:57,259 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) [2021-10-08 16:35:57,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 2743 transitions. [2021-10-08 16:35:57,264 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 2743 transitions. Word has length 22 [2021-10-08 16:35:57,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:35:57,264 INFO L470 AbstractCegarLoop]: Abstraction has 568 states and 2743 transitions. [2021-10-08 16:35:57,265 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) [2021-10-08 16:35:57,265 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 2743 transitions. [2021-10-08 16:35:57,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 16:35:57,268 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:35:57,268 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] [2021-10-08 16:35:57,284 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-08 16:35:57,481 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 [2021-10-08 16:35:57,482 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)] === [2021-10-08 16:35:57,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:35:57,483 INFO L82 PathProgramCache]: Analyzing trace with hash -1843557643, now seen corresponding path program 1 times [2021-10-08 16:35:57,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:35:57,484 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1398895605] [2021-10-08 16:35:57,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:35:57,484 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:35:57,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:35:57,486 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) [2021-10-08 16:35:57,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-08 16:35:57,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:35:57,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-08 16:35:57,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:35:57,753 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:35:57,753 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:35:57,824 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:35:57,824 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:35:57,824 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1398895605] [2021-10-08 16:35:57,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1398895605] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 16:35:57,824 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:35:57,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-08 16:35:57,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055512023] [2021-10-08 16:35:57,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-08 16:35:57,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:35:57,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-08 16:35:57,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-08 16:35:57,830 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) [2021-10-08 16:35:58,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:35:58,034 INFO L93 Difference]: Finished difference Result 886 states and 3791 transitions. [2021-10-08 16:35:58,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 16:35:58,034 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 [2021-10-08 16:35:58,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:35:58,044 INFO L225 Difference]: With dead ends: 886 [2021-10-08 16:35:58,044 INFO L226 Difference]: Without dead ends: 864 [2021-10-08 16:35:58,046 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 45.1ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-08 16:35:58,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 864 states. [2021-10-08 16:35:58,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 864 to 638. [2021-10-08 16:35:58,081 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) [2021-10-08 16:35:58,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 2992 transitions. [2021-10-08 16:35:58,086 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 2992 transitions. Word has length 22 [2021-10-08 16:35:58,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:35:58,087 INFO L470 AbstractCegarLoop]: Abstraction has 638 states and 2992 transitions. [2021-10-08 16:35:58,087 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) [2021-10-08 16:35:58,087 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 2992 transitions. [2021-10-08 16:35:58,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 16:35:58,091 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:35:58,091 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] [2021-10-08 16:35:58,105 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-08 16:35:58,303 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 [2021-10-08 16:35:58,304 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)] === [2021-10-08 16:35:58,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:35:58,305 INFO L82 PathProgramCache]: Analyzing trace with hash -2112988665, now seen corresponding path program 2 times [2021-10-08 16:35:58,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:35:58,305 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2042228119] [2021-10-08 16:35:58,306 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:35:58,306 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:35:58,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:35:58,307 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) [2021-10-08 16:35:58,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-08 16:35:58,532 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:35:58,533 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:35:58,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 16:35:58,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:35:58,690 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:35:58,691 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:35:58,823 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:35:58,823 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:35:58,823 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2042228119] [2021-10-08 16:35:58,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2042228119] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:35:58,824 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:35:58,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-10-08 16:35:58,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645265517] [2021-10-08 16:35:58,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 16:35:58,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:35:58,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 16:35:58,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-08 16:35:58,825 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) [2021-10-08 16:35:59,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:35:59,196 INFO L93 Difference]: Finished difference Result 1628 states and 6984 transitions. [2021-10-08 16:35:59,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-08 16:35:59,196 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 [2021-10-08 16:35:59,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:35:59,214 INFO L225 Difference]: With dead ends: 1628 [2021-10-08 16:35:59,214 INFO L226 Difference]: Without dead ends: 1628 [2021-10-08 16:35:59,215 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 150.2ms TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-10-08 16:35:59,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1628 states. [2021-10-08 16:35:59,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1628 to 838. [2021-10-08 16:35:59,262 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) [2021-10-08 16:35:59,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 838 states to 838 states and 4112 transitions. [2021-10-08 16:35:59,270 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 4112 transitions. Word has length 22 [2021-10-08 16:35:59,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:35:59,270 INFO L470 AbstractCegarLoop]: Abstraction has 838 states and 4112 transitions. [2021-10-08 16:35:59,270 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) [2021-10-08 16:35:59,270 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 4112 transitions. [2021-10-08 16:35:59,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-08 16:35:59,275 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:35:59,275 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] [2021-10-08 16:35:59,291 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-08 16:35:59,488 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 [2021-10-08 16:35:59,489 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)] === [2021-10-08 16:35:59,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:35:59,490 INFO L82 PathProgramCache]: Analyzing trace with hash 1154262589, now seen corresponding path program 1 times [2021-10-08 16:35:59,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:35:59,490 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2137845687] [2021-10-08 16:35:59,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:35:59,491 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:35:59,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:35:59,492 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) [2021-10-08 16:35:59,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-08 16:35:59,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:35:59,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 16:35:59,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:36:00,207 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:36:00,207 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:36:00,447 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:36:00,447 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:36:00,447 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2137845687] [2021-10-08 16:36:00,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2137845687] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:36:00,447 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:36:00,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-08 16:36:00,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504732114] [2021-10-08 16:36:00,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 16:36:00,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:36:00,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 16:36:00,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-08 16:36:00,449 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) [2021-10-08 16:36:00,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:36:00,718 INFO L93 Difference]: Finished difference Result 1132 states and 5091 transitions. [2021-10-08 16:36:00,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 16:36:00,719 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 [2021-10-08 16:36:00,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:36:00,731 INFO L225 Difference]: With dead ends: 1132 [2021-10-08 16:36:00,731 INFO L226 Difference]: Without dead ends: 1082 [2021-10-08 16:36:00,732 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 101.8ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-08 16:36:00,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1082 states. [2021-10-08 16:36:00,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1082 to 932. [2021-10-08 16:36:00,774 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) [2021-10-08 16:36:00,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 932 states to 932 states and 4533 transitions. [2021-10-08 16:36:00,781 INFO L78 Accepts]: Start accepts. Automaton has 932 states and 4533 transitions. Word has length 23 [2021-10-08 16:36:00,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:36:00,782 INFO L470 AbstractCegarLoop]: Abstraction has 932 states and 4533 transitions. [2021-10-08 16:36:00,782 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) [2021-10-08 16:36:00,782 INFO L276 IsEmpty]: Start isEmpty. Operand 932 states and 4533 transitions. [2021-10-08 16:36:00,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-08 16:36:00,787 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:36:00,787 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] [2021-10-08 16:36:00,801 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-08 16:36:01,001 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 [2021-10-08 16:36:01,002 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)] === [2021-10-08 16:36:01,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:36:01,002 INFO L82 PathProgramCache]: Analyzing trace with hash -1142673624, now seen corresponding path program 1 times [2021-10-08 16:36:01,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:36:01,003 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1519798613] [2021-10-08 16:36:01,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:36:01,004 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:36:01,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:36:01,006 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) [2021-10-08 16:36:01,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-08 16:36:01,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:36:01,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 16:36:01,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:36:01,654 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:36:01,654 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:36:01,923 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:36:01,924 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:36:01,924 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1519798613] [2021-10-08 16:36:01,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1519798613] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:36:01,924 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:36:01,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-08 16:36:01,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538129768] [2021-10-08 16:36:01,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 16:36:01,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:36:01,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 16:36:01,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-08 16:36:01,926 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) [2021-10-08 16:36:02,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:36:02,165 INFO L93 Difference]: Finished difference Result 1172 states and 5319 transitions. [2021-10-08 16:36:02,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 16:36:02,165 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 [2021-10-08 16:36:02,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:36:02,178 INFO L225 Difference]: With dead ends: 1172 [2021-10-08 16:36:02,178 INFO L226 Difference]: Without dead ends: 1142 [2021-10-08 16:36:02,178 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 115.4ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-08 16:36:02,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1142 states. [2021-10-08 16:36:02,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1142 to 1036. [2021-10-08 16:36:02,222 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) [2021-10-08 16:36:02,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1036 states to 1036 states and 4954 transitions. [2021-10-08 16:36:02,230 INFO L78 Accepts]: Start accepts. Automaton has 1036 states and 4954 transitions. Word has length 23 [2021-10-08 16:36:02,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:36:02,230 INFO L470 AbstractCegarLoop]: Abstraction has 1036 states and 4954 transitions. [2021-10-08 16:36:02,230 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) [2021-10-08 16:36:02,231 INFO L276 IsEmpty]: Start isEmpty. Operand 1036 states and 4954 transitions. [2021-10-08 16:36:02,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-08 16:36:02,236 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:36:02,236 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] [2021-10-08 16:36:02,250 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-08 16:36:02,450 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 [2021-10-08 16:36:02,450 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)] === [2021-10-08 16:36:02,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:36:02,451 INFO L82 PathProgramCache]: Analyzing trace with hash -795704876, now seen corresponding path program 2 times [2021-10-08 16:36:02,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:36:02,452 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1829726382] [2021-10-08 16:36:02,453 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:36:02,453 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:36:02,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:36:02,454 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) [2021-10-08 16:36:02,461 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-08 16:36:02,725 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:36:02,725 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:36:02,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 16:36:02,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:36:03,159 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:36:03,159 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:36:03,397 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:36:03,397 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:36:03,397 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1829726382] [2021-10-08 16:36:03,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1829726382] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:36:03,398 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:36:03,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-08 16:36:03,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435090693] [2021-10-08 16:36:03,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 16:36:03,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:36:03,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 16:36:03,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-08 16:36:03,399 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) [2021-10-08 16:36:03,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:36:03,610 INFO L93 Difference]: Finished difference Result 1248 states and 5710 transitions. [2021-10-08 16:36:03,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 16:36:03,610 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 [2021-10-08 16:36:03,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:36:03,625 INFO L225 Difference]: With dead ends: 1248 [2021-10-08 16:36:03,625 INFO L226 Difference]: Without dead ends: 1218 [2021-10-08 16:36:03,625 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 105.5ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-08 16:36:03,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1218 states. [2021-10-08 16:36:03,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1218 to 1106. [2021-10-08 16:36:03,668 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) [2021-10-08 16:36:03,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1106 states to 1106 states and 5270 transitions. [2021-10-08 16:36:03,676 INFO L78 Accepts]: Start accepts. Automaton has 1106 states and 5270 transitions. Word has length 23 [2021-10-08 16:36:03,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:36:03,676 INFO L470 AbstractCegarLoop]: Abstraction has 1106 states and 5270 transitions. [2021-10-08 16:36:03,677 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) [2021-10-08 16:36:03,677 INFO L276 IsEmpty]: Start isEmpty. Operand 1106 states and 5270 transitions. [2021-10-08 16:36:03,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-08 16:36:03,682 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:36:03,682 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] [2021-10-08 16:36:03,697 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-08 16:36:03,895 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 [2021-10-08 16:36:03,895 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)] === [2021-10-08 16:36:03,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:36:03,896 INFO L82 PathProgramCache]: Analyzing trace with hash -1003497093, now seen corresponding path program 2 times [2021-10-08 16:36:03,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:36:03,897 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [97333341] [2021-10-08 16:36:03,897 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:36:03,898 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:36:03,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:36:03,899 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) [2021-10-08 16:36:03,902 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-08 16:36:04,179 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:36:04,180 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:36:04,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 16:36:04,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:36:04,717 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:36:04,717 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:36:04,917 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:36:04,917 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:36:04,918 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [97333341] [2021-10-08 16:36:04,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [97333341] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:36:04,918 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:36:04,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-08 16:36:04,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256250149] [2021-10-08 16:36:04,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 16:36:04,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:36:04,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 16:36:04,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-08 16:36:04,920 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) [2021-10-08 16:36:05,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:36:05,150 INFO L93 Difference]: Finished difference Result 1382 states and 6191 transitions. [2021-10-08 16:36:05,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 16:36:05,151 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 [2021-10-08 16:36:05,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:36:05,166 INFO L225 Difference]: With dead ends: 1382 [2021-10-08 16:36:05,166 INFO L226 Difference]: Without dead ends: 1332 [2021-10-08 16:36:05,166 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 98.0ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-08 16:36:05,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1332 states. [2021-10-08 16:36:05,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1332 to 1168. [2021-10-08 16:36:05,216 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) [2021-10-08 16:36:05,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1168 states to 1168 states and 5553 transitions. [2021-10-08 16:36:05,224 INFO L78 Accepts]: Start accepts. Automaton has 1168 states and 5553 transitions. Word has length 23 [2021-10-08 16:36:05,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:36:05,224 INFO L470 AbstractCegarLoop]: Abstraction has 1168 states and 5553 transitions. [2021-10-08 16:36:05,224 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) [2021-10-08 16:36:05,225 INFO L276 IsEmpty]: Start isEmpty. Operand 1168 states and 5553 transitions. [2021-10-08 16:36:05,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-08 16:36:05,230 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:36:05,230 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] [2021-10-08 16:36:05,245 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-10-08 16:36:05,443 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 [2021-10-08 16:36:05,444 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)] === [2021-10-08 16:36:05,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:36:05,445 INFO L82 PathProgramCache]: Analyzing trace with hash -402590731, now seen corresponding path program 3 times [2021-10-08 16:36:05,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:36:05,445 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [873575276] [2021-10-08 16:36:05,445 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:36:05,446 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:36:05,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:36:05,447 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) [2021-10-08 16:36:05,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-08 16:36:05,770 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-08 16:36:05,770 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:36:05,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-08 16:36:05,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:36:06,004 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:36:06,004 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:36:06,267 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:36:06,267 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:36:06,267 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [873575276] [2021-10-08 16:36:06,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [873575276] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:36:06,268 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:36:06,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2021-10-08 16:36:06,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510094468] [2021-10-08 16:36:06,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 16:36:06,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:36:06,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 16:36:06,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:36:06,270 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) [2021-10-08 16:36:07,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:36:07,685 INFO L93 Difference]: Finished difference Result 2802 states and 12099 transitions. [2021-10-08 16:36:07,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-08 16:36:07,685 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 [2021-10-08 16:36:07,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:36:07,706 INFO L225 Difference]: With dead ends: 2802 [2021-10-08 16:36:07,706 INFO L226 Difference]: Without dead ends: 2802 [2021-10-08 16:36:07,707 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 629.0ms TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2021-10-08 16:36:07,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2802 states. [2021-10-08 16:36:07,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2802 to 1478. [2021-10-08 16:36:07,786 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) [2021-10-08 16:36:07,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1478 states to 1478 states and 7239 transitions. [2021-10-08 16:36:07,796 INFO L78 Accepts]: Start accepts. Automaton has 1478 states and 7239 transitions. Word has length 24 [2021-10-08 16:36:07,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:36:07,799 INFO L470 AbstractCegarLoop]: Abstraction has 1478 states and 7239 transitions. [2021-10-08 16:36:07,799 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) [2021-10-08 16:36:07,799 INFO L276 IsEmpty]: Start isEmpty. Operand 1478 states and 7239 transitions. [2021-10-08 16:36:07,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-08 16:36:07,806 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:36:07,806 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] [2021-10-08 16:36:07,821 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-10-08 16:36:08,019 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 [2021-10-08 16:36:08,019 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)] === [2021-10-08 16:36:08,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:36:08,020 INFO L82 PathProgramCache]: Analyzing trace with hash 1602477994, now seen corresponding path program 4 times [2021-10-08 16:36:08,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:36:08,021 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [384044530] [2021-10-08 16:36:08,021 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:36:08,021 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:36:08,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:36:08,023 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) [2021-10-08 16:36:08,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-10-08 16:36:08,316 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:36:08,317 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:36:08,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 16:36:08,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:36:08,479 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:36:08,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:36:08,626 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:36:08,627 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:36:08,627 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [384044530] [2021-10-08 16:36:08,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [384044530] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:36:08,627 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:36:08,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-08 16:36:08,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22883012] [2021-10-08 16:36:08,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 16:36:08,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:36:08,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 16:36:08,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-08 16:36:08,630 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) [2021-10-08 16:36:40,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:36:40,453 INFO L93 Difference]: Finished difference Result 2478 states and 10686 transitions. [2021-10-08 16:36:40,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-08 16:36:40,454 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 [2021-10-08 16:36:40,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:36:40,478 INFO L225 Difference]: With dead ends: 2478 [2021-10-08 16:36:40,478 INFO L226 Difference]: Without dead ends: 2422 [2021-10-08 16:36:40,479 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 2587.5ms TimeCoverageRelationStatistics Valid=78, Invalid=263, Unknown=1, NotChecked=0, Total=342 [2021-10-08 16:36:40,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2422 states. [2021-10-08 16:36:40,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2422 to 1550. [2021-10-08 16:36:40,553 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) [2021-10-08 16:36:40,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1550 states to 1550 states and 7516 transitions. [2021-10-08 16:36:40,565 INFO L78 Accepts]: Start accepts. Automaton has 1550 states and 7516 transitions. Word has length 24 [2021-10-08 16:36:40,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:36:40,565 INFO L470 AbstractCegarLoop]: Abstraction has 1550 states and 7516 transitions. [2021-10-08 16:36:40,565 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) [2021-10-08 16:36:40,566 INFO L276 IsEmpty]: Start isEmpty. Operand 1550 states and 7516 transitions. [2021-10-08 16:36:40,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-08 16:36:40,573 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:36:40,573 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] [2021-10-08 16:36:40,587 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Ended with exit code 0 [2021-10-08 16:36:40,786 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 [2021-10-08 16:36:40,787 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)] === [2021-10-08 16:36:40,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:36:40,788 INFO L82 PathProgramCache]: Analyzing trace with hash -2147312977, now seen corresponding path program 5 times [2021-10-08 16:36:40,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:36:40,789 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1454490248] [2021-10-08 16:36:40,789 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:36:40,789 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:36:40,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:36:40,790 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) [2021-10-08 16:36:40,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-08 16:36:41,095 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-08 16:36:41,095 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:36:41,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 16:36:41,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:36:41,290 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:36:41,290 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:36:41,468 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:36:41,469 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:36:41,469 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1454490248] [2021-10-08 16:36:41,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1454490248] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:36:41,469 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:36:41,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-08 16:36:41,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667395360] [2021-10-08 16:36:41,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 16:36:41,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:36:41,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 16:36:41,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-08 16:36:41,472 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) [2021-10-08 16:36:42,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:36:42,926 INFO L93 Difference]: Finished difference Result 3074 states and 13128 transitions. [2021-10-08 16:36:42,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-08 16:36:42,927 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 [2021-10-08 16:36:42,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:36:42,945 INFO L225 Difference]: With dead ends: 3074 [2021-10-08 16:36:42,946 INFO L226 Difference]: Without dead ends: 3074 [2021-10-08 16:36:42,946 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 419.9ms TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2021-10-08 16:36:42,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3074 states. [2021-10-08 16:36:43,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3074 to 1520. [2021-10-08 16:36:43,021 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) [2021-10-08 16:36:43,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1520 states to 1520 states and 7299 transitions. [2021-10-08 16:36:43,030 INFO L78 Accepts]: Start accepts. Automaton has 1520 states and 7299 transitions. Word has length 24 [2021-10-08 16:36:43,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:36:43,031 INFO L470 AbstractCegarLoop]: Abstraction has 1520 states and 7299 transitions. [2021-10-08 16:36:43,031 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) [2021-10-08 16:36:43,031 INFO L276 IsEmpty]: Start isEmpty. Operand 1520 states and 7299 transitions. [2021-10-08 16:36:43,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-08 16:36:43,038 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:36:43,038 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] [2021-10-08 16:36:43,054 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-10-08 16:36:43,251 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 [2021-10-08 16:36:43,252 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)] === [2021-10-08 16:36:43,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:36:43,253 INFO L82 PathProgramCache]: Analyzing trace with hash 1920792276, now seen corresponding path program 6 times [2021-10-08 16:36:43,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:36:43,253 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [620136385] [2021-10-08 16:36:43,254 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:36:43,254 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:36:43,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:36:43,256 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) [2021-10-08 16:36:43,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-10-08 16:36:43,623 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-08 16:36:43,623 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:36:43,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 16:36:43,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:36:43,794 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:36:43,795 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:36:43,945 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:36:43,945 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:36:43,945 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [620136385] [2021-10-08 16:36:43,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [620136385] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:36:43,946 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:36:43,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-08 16:36:43,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832047343] [2021-10-08 16:36:43,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 16:36:43,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:36:43,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 16:36:43,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-08 16:36:43,947 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) [2021-10-08 16:36:44,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:36:44,609 INFO L93 Difference]: Finished difference Result 2298 states and 9980 transitions. [2021-10-08 16:36:44,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-08 16:36:44,610 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 [2021-10-08 16:36:44,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:36:44,623 INFO L225 Difference]: With dead ends: 2298 [2021-10-08 16:36:44,623 INFO L226 Difference]: Without dead ends: 2262 [2021-10-08 16:36:44,624 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 240.2ms TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2021-10-08 16:36:44,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2262 states. [2021-10-08 16:36:44,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2262 to 1534. [2021-10-08 16:36:44,687 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) [2021-10-08 16:36:44,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1534 states to 1534 states and 7331 transitions. [2021-10-08 16:36:44,696 INFO L78 Accepts]: Start accepts. Automaton has 1534 states and 7331 transitions. Word has length 24 [2021-10-08 16:36:44,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:36:44,697 INFO L470 AbstractCegarLoop]: Abstraction has 1534 states and 7331 transitions. [2021-10-08 16:36:44,697 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) [2021-10-08 16:36:44,697 INFO L276 IsEmpty]: Start isEmpty. Operand 1534 states and 7331 transitions. [2021-10-08 16:36:44,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-08 16:36:44,703 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:36:44,703 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] [2021-10-08 16:36:44,717 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-10-08 16:36:44,917 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 [2021-10-08 16:36:44,917 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)] === [2021-10-08 16:36:44,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:36:44,918 INFO L82 PathProgramCache]: Analyzing trace with hash 1029502268, now seen corresponding path program 7 times [2021-10-08 16:36:44,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:36:44,918 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [459565552] [2021-10-08 16:36:44,918 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 16:36:44,919 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:36:44,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:36:44,920 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) [2021-10-08 16:36:44,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-10-08 16:36:45,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:36:45,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 16:36:45,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:36:45,398 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:36:45,398 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:36:45,558 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:36:45,558 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:36:45,558 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [459565552] [2021-10-08 16:36:45,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [459565552] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:36:45,558 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:36:45,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-08 16:36:45,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173488744] [2021-10-08 16:36:45,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 16:36:45,559 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:36:45,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 16:36:45,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-08 16:36:45,560 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) [2021-10-08 16:36:46,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:36:46,095 INFO L93 Difference]: Finished difference Result 2196 states and 9763 transitions. [2021-10-08 16:36:46,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-08 16:36:46,096 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 [2021-10-08 16:36:46,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:36:46,107 INFO L225 Difference]: With dead ends: 2196 [2021-10-08 16:36:46,107 INFO L226 Difference]: Without dead ends: 2196 [2021-10-08 16:36:46,108 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 [2021-10-08 16:36:46,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2196 states. [2021-10-08 16:36:46,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2196 to 1534. [2021-10-08 16:36:46,175 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) [2021-10-08 16:36:46,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1534 states to 1534 states and 7331 transitions. [2021-10-08 16:36:46,186 INFO L78 Accepts]: Start accepts. Automaton has 1534 states and 7331 transitions. Word has length 24 [2021-10-08 16:36:46,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:36:46,187 INFO L470 AbstractCegarLoop]: Abstraction has 1534 states and 7331 transitions. [2021-10-08 16:36:46,188 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) [2021-10-08 16:36:46,188 INFO L276 IsEmpty]: Start isEmpty. Operand 1534 states and 7331 transitions. [2021-10-08 16:36:46,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-08 16:36:46,195 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:36:46,195 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] [2021-10-08 16:36:46,211 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-10-08 16:36:46,408 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 [2021-10-08 16:36:46,409 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)] === [2021-10-08 16:36:46,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:36:46,410 INFO L82 PathProgramCache]: Analyzing trace with hash -1063103496, now seen corresponding path program 3 times [2021-10-08 16:36:46,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:36:46,410 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1532408011] [2021-10-08 16:36:46,411 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:36:46,411 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:36:46,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:36:46,412 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) [2021-10-08 16:36:46,413 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-10-08 16:36:46,752 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-08 16:36:46,752 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:36:46,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 16:36:46,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:36:47,005 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:36:47,006 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:36:47,524 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:36:47,524 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:36:47,524 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1532408011] [2021-10-08 16:36:47,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1532408011] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:36:47,525 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:36:47,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2021-10-08 16:36:47,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042987966] [2021-10-08 16:36:47,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 16:36:47,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:36:47,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 16:36:47,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-08 16:36:47,527 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) [2021-10-08 16:36:49,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:36:49,060 INFO L93 Difference]: Finished difference Result 3096 states and 13635 transitions. [2021-10-08 16:36:49,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-08 16:36:49,063 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 [2021-10-08 16:36:49,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:36:49,079 INFO L225 Difference]: With dead ends: 3096 [2021-10-08 16:36:49,080 INFO L226 Difference]: Without dead ends: 3062 [2021-10-08 16:36:49,080 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 773.9ms TimeCoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2021-10-08 16:36:49,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3062 states. [2021-10-08 16:36:49,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3062 to 2220. [2021-10-08 16:36:49,173 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) [2021-10-08 16:36:49,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2220 states to 2220 states and 10503 transitions. [2021-10-08 16:36:49,234 INFO L78 Accepts]: Start accepts. Automaton has 2220 states and 10503 transitions. Word has length 24 [2021-10-08 16:36:49,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:36:49,234 INFO L470 AbstractCegarLoop]: Abstraction has 2220 states and 10503 transitions. [2021-10-08 16:36:49,234 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) [2021-10-08 16:36:49,234 INFO L276 IsEmpty]: Start isEmpty. Operand 2220 states and 10503 transitions. [2021-10-08 16:36:49,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-08 16:36:49,244 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:36:49,244 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] [2021-10-08 16:36:49,260 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-10-08 16:36:49,457 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 [2021-10-08 16:36:49,458 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)] === [2021-10-08 16:36:49,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:36:49,459 INFO L82 PathProgramCache]: Analyzing trace with hash -2108118788, now seen corresponding path program 4 times [2021-10-08 16:36:49,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:36:49,460 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1780654036] [2021-10-08 16:36:49,460 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:36:49,460 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:36:49,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:36:49,461 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) [2021-10-08 16:36:49,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-10-08 16:36:49,772 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:36:49,772 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:36:49,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 16:36:49,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:36:50,055 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:36:50,056 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:36:50,556 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:36:50,557 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:36:50,557 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1780654036] [2021-10-08 16:36:50,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1780654036] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:36:50,557 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:36:50,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2021-10-08 16:36:50,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245554994] [2021-10-08 16:36:50,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 16:36:50,559 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:36:50,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 16:36:50,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-10-08 16:36:50,560 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) [2021-10-08 16:36:52,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:36:52,148 INFO L93 Difference]: Finished difference Result 3706 states and 16712 transitions. [2021-10-08 16:36:52,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-08 16:36:52,149 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 [2021-10-08 16:36:52,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:36:52,168 INFO L225 Difference]: With dead ends: 3706 [2021-10-08 16:36:52,168 INFO L226 Difference]: Without dead ends: 3680 [2021-10-08 16:36:52,169 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 813.0ms TimeCoverageRelationStatistics Valid=101, Invalid=319, Unknown=0, NotChecked=0, Total=420 [2021-10-08 16:36:52,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3680 states. [2021-10-08 16:36:52,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3680 to 2448. [2021-10-08 16:36:52,280 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) [2021-10-08 16:36:52,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2448 states to 2448 states and 11801 transitions. [2021-10-08 16:36:52,299 INFO L78 Accepts]: Start accepts. Automaton has 2448 states and 11801 transitions. Word has length 24 [2021-10-08 16:36:52,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:36:52,299 INFO L470 AbstractCegarLoop]: Abstraction has 2448 states and 11801 transitions. [2021-10-08 16:36:52,300 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) [2021-10-08 16:36:52,300 INFO L276 IsEmpty]: Start isEmpty. Operand 2448 states and 11801 transitions. [2021-10-08 16:36:52,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-08 16:36:52,312 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:36:52,312 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] [2021-10-08 16:36:52,328 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-10-08 16:36:52,526 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 [2021-10-08 16:36:52,526 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)] === [2021-10-08 16:36:52,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:36:52,527 INFO L82 PathProgramCache]: Analyzing trace with hash 917748386, now seen corresponding path program 5 times [2021-10-08 16:36:52,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:36:52,527 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1469507712] [2021-10-08 16:36:52,527 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:36:52,527 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:36:52,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:36:52,529 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) [2021-10-08 16:36:52,550 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-10-08 16:36:52,952 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-08 16:36:52,952 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:36:52,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 16:36:52,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:36:53,243 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:36:53,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:36:53,743 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:36:53,743 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:36:53,743 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1469507712] [2021-10-08 16:36:53,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1469507712] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:36:53,743 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:36:53,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2021-10-08 16:36:53,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860694204] [2021-10-08 16:36:53,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 16:36:53,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:36:53,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 16:36:53,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-10-08 16:36:53,745 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) [2021-10-08 16:36:55,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:36:55,416 INFO L93 Difference]: Finished difference Result 5806 states and 26536 transitions. [2021-10-08 16:36:55,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-08 16:36:55,417 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 [2021-10-08 16:36:55,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:36:55,436 INFO L225 Difference]: With dead ends: 5806 [2021-10-08 16:36:55,436 INFO L226 Difference]: Without dead ends: 5806 [2021-10-08 16:36:55,436 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 764.1ms TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2021-10-08 16:36:55,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5806 states. [2021-10-08 16:36:55,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5806 to 2940. [2021-10-08 16:36:55,573 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) [2021-10-08 16:36:55,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2940 states to 2940 states and 14945 transitions. [2021-10-08 16:36:55,642 INFO L78 Accepts]: Start accepts. Automaton has 2940 states and 14945 transitions. Word has length 24 [2021-10-08 16:36:55,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:36:55,642 INFO L470 AbstractCegarLoop]: Abstraction has 2940 states and 14945 transitions. [2021-10-08 16:36:55,642 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) [2021-10-08 16:36:55,643 INFO L276 IsEmpty]: Start isEmpty. Operand 2940 states and 14945 transitions. [2021-10-08 16:36:55,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-08 16:36:55,655 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:36:55,655 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] [2021-10-08 16:36:55,669 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-10-08 16:36:55,868 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 [2021-10-08 16:36:55,869 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)] === [2021-10-08 16:36:55,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:36:55,870 INFO L82 PathProgramCache]: Analyzing trace with hash 1102993100, now seen corresponding path program 6 times [2021-10-08 16:36:55,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:36:55,871 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1463712380] [2021-10-08 16:36:55,871 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:36:55,871 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:36:55,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:36:55,873 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) [2021-10-08 16:36:55,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-10-08 16:36:56,290 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-08 16:36:56,290 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:36:56,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-08 16:36:56,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:36:56,526 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:36:56,526 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:36:56,935 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:36:56,935 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:36:56,935 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1463712380] [2021-10-08 16:36:56,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1463712380] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:36:56,936 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:36:56,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2021-10-08 16:36:56,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207949735] [2021-10-08 16:36:56,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 16:36:56,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:36:56,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 16:36:56,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-10-08 16:36:56,937 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) [2021-10-08 16:36:58,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:36:58,106 INFO L93 Difference]: Finished difference Result 4442 states and 21137 transitions. [2021-10-08 16:36:58,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-08 16:36:58,107 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 [2021-10-08 16:36:58,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:36:58,123 INFO L225 Difference]: With dead ends: 4442 [2021-10-08 16:36:58,123 INFO L226 Difference]: Without dead ends: 4392 [2021-10-08 16:36:58,124 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 429.0ms TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2021-10-08 16:36:58,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4392 states. [2021-10-08 16:36:58,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4392 to 3270. [2021-10-08 16:36:58,252 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) [2021-10-08 16:36:58,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3270 states to 3270 states and 16893 transitions. [2021-10-08 16:36:58,276 INFO L78 Accepts]: Start accepts. Automaton has 3270 states and 16893 transitions. Word has length 24 [2021-10-08 16:36:58,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:36:58,277 INFO L470 AbstractCegarLoop]: Abstraction has 3270 states and 16893 transitions. [2021-10-08 16:36:58,277 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) [2021-10-08 16:36:58,277 INFO L276 IsEmpty]: Start isEmpty. Operand 3270 states and 16893 transitions. [2021-10-08 16:36:58,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-08 16:36:58,339 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:36:58,340 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] [2021-10-08 16:36:58,363 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-10-08 16:36:58,549 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 [2021-10-08 16:36:58,550 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)] === [2021-10-08 16:36:58,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:36:58,551 INFO L82 PathProgramCache]: Analyzing trace with hash -166107022, now seen corresponding path program 7 times [2021-10-08 16:36:58,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:36:58,551 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1162066934] [2021-10-08 16:36:58,551 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 16:36:58,552 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:36:58,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:36:58,553 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) [2021-10-08 16:36:58,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-10-08 16:36:58,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:36:58,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 16:36:58,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:36:59,125 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:36:59,126 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:36:59,765 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:36:59,765 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:36:59,765 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1162066934] [2021-10-08 16:36:59,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1162066934] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:36:59,765 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:36:59,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2021-10-08 16:36:59,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92639149] [2021-10-08 16:36:59,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 16:36:59,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:36:59,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 16:36:59,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-10-08 16:36:59,767 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) [2021-10-08 16:37:01,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:37:01,303 INFO L93 Difference]: Finished difference Result 6404 states and 30246 transitions. [2021-10-08 16:37:01,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-08 16:37:01,304 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 [2021-10-08 16:37:01,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:37:01,329 INFO L225 Difference]: With dead ends: 6404 [2021-10-08 16:37:01,329 INFO L226 Difference]: Without dead ends: 6404 [2021-10-08 16:37:01,330 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 761.8ms TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2021-10-08 16:37:01,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6404 states. [2021-10-08 16:37:01,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6404 to 3514. [2021-10-08 16:37:01,473 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) [2021-10-08 16:37:01,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3514 states to 3514 states and 18253 transitions. [2021-10-08 16:37:01,497 INFO L78 Accepts]: Start accepts. Automaton has 3514 states and 18253 transitions. Word has length 24 [2021-10-08 16:37:01,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:37:01,497 INFO L470 AbstractCegarLoop]: Abstraction has 3514 states and 18253 transitions. [2021-10-08 16:37:01,497 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) [2021-10-08 16:37:01,497 INFO L276 IsEmpty]: Start isEmpty. Operand 3514 states and 18253 transitions. [2021-10-08 16:37:01,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-08 16:37:01,512 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:37:01,512 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] [2021-10-08 16:37:01,528 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Ended with exit code 0 [2021-10-08 16:37:01,725 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 [2021-10-08 16:37:01,726 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)] === [2021-10-08 16:37:01,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:37:01,726 INFO L82 PathProgramCache]: Analyzing trace with hash 781369762, now seen corresponding path program 8 times [2021-10-08 16:37:01,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:37:01,727 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1662105997] [2021-10-08 16:37:01,727 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:37:01,727 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:37:01,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:37:01,728 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) [2021-10-08 16:37:01,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-10-08 16:37:02,233 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:37:02,234 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:37:02,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 16:37:02,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:37:02,506 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:37:02,506 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:37:03,061 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:37:03,061 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:37:03,061 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1662105997] [2021-10-08 16:37:03,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1662105997] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:37:03,062 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:37:03,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2021-10-08 16:37:03,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640815005] [2021-10-08 16:37:03,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 16:37:03,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:37:03,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 16:37:03,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-08 16:37:03,064 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) [2021-10-08 16:37:04,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:37:04,428 INFO L93 Difference]: Finished difference Result 6048 states and 29472 transitions. [2021-10-08 16:37:04,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-08 16:37:04,429 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 [2021-10-08 16:37:04,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:37:04,450 INFO L225 Difference]: With dead ends: 6048 [2021-10-08 16:37:04,451 INFO L226 Difference]: Without dead ends: 6048 [2021-10-08 16:37:04,451 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 772.0ms TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2021-10-08 16:37:04,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6048 states. [2021-10-08 16:37:04,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6048 to 4060. [2021-10-08 16:37:04,657 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) [2021-10-08 16:37:04,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4060 states to 4060 states and 21634 transitions. [2021-10-08 16:37:04,685 INFO L78 Accepts]: Start accepts. Automaton has 4060 states and 21634 transitions. Word has length 24 [2021-10-08 16:37:04,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:37:04,685 INFO L470 AbstractCegarLoop]: Abstraction has 4060 states and 21634 transitions. [2021-10-08 16:37:04,685 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) [2021-10-08 16:37:04,686 INFO L276 IsEmpty]: Start isEmpty. Operand 4060 states and 21634 transitions. [2021-10-08 16:37:04,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-08 16:37:04,703 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:37:04,703 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] [2021-10-08 16:37:04,722 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2021-10-08 16:37:04,917 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 [2021-10-08 16:37:04,918 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)] === [2021-10-08 16:37:04,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:37:04,919 INFO L82 PathProgramCache]: Analyzing trace with hash -1049738101, now seen corresponding path program 8 times [2021-10-08 16:37:04,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:37:04,919 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1220647697] [2021-10-08 16:37:04,920 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:37:04,920 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:37:04,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:37:04,921 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) [2021-10-08 16:37:04,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-10-08 16:37:05,416 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:37:05,416 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:37:05,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 16:37:05,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:37:05,581 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:37:05,582 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:37:05,765 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:37:05,765 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:37:05,765 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1220647697] [2021-10-08 16:37:05,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1220647697] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:37:05,765 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:37:05,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-08 16:37:05,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4612635] [2021-10-08 16:37:05,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 16:37:05,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:37:05,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 16:37:05,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-08 16:37:05,767 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) [2021-10-08 16:37:06,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:37:06,574 INFO L93 Difference]: Finished difference Result 8954 states and 43077 transitions. [2021-10-08 16:37:06,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-08 16:37:06,577 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 [2021-10-08 16:37:06,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:37:06,623 INFO L225 Difference]: With dead ends: 8954 [2021-10-08 16:37:06,623 INFO L226 Difference]: Without dead ends: 8954 [2021-10-08 16:37:06,623 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 208.0ms TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:37:06,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8954 states. [2021-10-08 16:37:06,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8954 to 4188. [2021-10-08 16:37:06,881 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) [2021-10-08 16:37:06,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4188 states to 4188 states and 22534 transitions. [2021-10-08 16:37:06,901 INFO L78 Accepts]: Start accepts. Automaton has 4188 states and 22534 transitions. Word has length 24 [2021-10-08 16:37:06,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:37:06,902 INFO L470 AbstractCegarLoop]: Abstraction has 4188 states and 22534 transitions. [2021-10-08 16:37:06,902 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) [2021-10-08 16:37:06,902 INFO L276 IsEmpty]: Start isEmpty. Operand 4188 states and 22534 transitions. [2021-10-08 16:37:06,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-08 16:37:06,920 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:37:06,920 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] [2021-10-08 16:37:06,942 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2021-10-08 16:37:07,134 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 [2021-10-08 16:37:07,135 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)] === [2021-10-08 16:37:07,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:37:07,136 INFO L82 PathProgramCache]: Analyzing trace with hash -863562708, now seen corresponding path program 9 times [2021-10-08 16:37:07,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:37:07,137 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1096639974] [2021-10-08 16:37:07,137 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:37:07,137 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:37:07,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:37:07,138 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) [2021-10-08 16:37:07,139 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-10-08 16:37:07,567 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-08 16:37:07,567 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:37:07,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-08 16:37:07,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:37:07,733 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:37:07,734 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:37:08,043 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:37:08,044 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:37:08,044 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1096639974] [2021-10-08 16:37:08,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1096639974] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:37:08,044 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:37:08,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2021-10-08 16:37:08,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253384355] [2021-10-08 16:37:08,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 16:37:08,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:37:08,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 16:37:08,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-10-08 16:37:08,045 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) [2021-10-08 16:37:11,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:37:11,264 INFO L93 Difference]: Finished difference Result 8348 states and 40130 transitions. [2021-10-08 16:37:11,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-08 16:37:11,265 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 [2021-10-08 16:37:11,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:37:11,308 INFO L225 Difference]: With dead ends: 8348 [2021-10-08 16:37:11,308 INFO L226 Difference]: Without dead ends: 8310 [2021-10-08 16:37:11,309 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 465.5ms TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2021-10-08 16:37:11,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8310 states. [2021-10-08 16:37:11,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8310 to 4518. [2021-10-08 16:37:11,513 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) [2021-10-08 16:37:11,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4518 states to 4518 states and 24177 transitions. [2021-10-08 16:37:11,535 INFO L78 Accepts]: Start accepts. Automaton has 4518 states and 24177 transitions. Word has length 24 [2021-10-08 16:37:11,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:37:11,536 INFO L470 AbstractCegarLoop]: Abstraction has 4518 states and 24177 transitions. [2021-10-08 16:37:11,536 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) [2021-10-08 16:37:11,536 INFO L276 IsEmpty]: Start isEmpty. Operand 4518 states and 24177 transitions. [2021-10-08 16:37:11,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-08 16:37:11,619 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:37:11,619 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] [2021-10-08 16:37:11,634 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2021-10-08 16:37:11,820 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 [2021-10-08 16:37:11,820 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)] === [2021-10-08 16:37:11,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:37:11,821 INFO L82 PathProgramCache]: Analyzing trace with hash -1754852716, now seen corresponding path program 10 times [2021-10-08 16:37:11,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:37:11,822 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2008389955] [2021-10-08 16:37:11,822 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:37:11,823 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:37:11,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:37:11,825 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) [2021-10-08 16:37:11,827 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-10-08 16:37:12,280 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:37:12,280 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:37:12,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 16:37:12,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:37:12,454 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:37:12,455 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:37:12,630 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:37:12,630 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:37:12,630 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2008389955] [2021-10-08 16:37:12,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2008389955] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:37:12,631 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:37:12,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-08 16:37:12,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752757785] [2021-10-08 16:37:12,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 16:37:12,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:37:12,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 16:37:12,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-08 16:37:12,632 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) [2021-10-08 16:37:18,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:37:18,195 INFO L93 Difference]: Finished difference Result 8298 states and 39903 transitions. [2021-10-08 16:37:18,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-08 16:37:18,197 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 [2021-10-08 16:37:18,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:37:18,238 INFO L225 Difference]: With dead ends: 8298 [2021-10-08 16:37:18,238 INFO L226 Difference]: Without dead ends: 8298 [2021-10-08 16:37:18,238 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 356.1ms TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2021-10-08 16:37:18,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8298 states. [2021-10-08 16:37:18,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8298 to 4532. [2021-10-08 16:37:18,435 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) [2021-10-08 16:37:18,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4532 states to 4532 states and 24117 transitions. [2021-10-08 16:37:18,456 INFO L78 Accepts]: Start accepts. Automaton has 4532 states and 24117 transitions. Word has length 24 [2021-10-08 16:37:18,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:37:18,456 INFO L470 AbstractCegarLoop]: Abstraction has 4532 states and 24117 transitions. [2021-10-08 16:37:18,456 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) [2021-10-08 16:37:18,456 INFO L276 IsEmpty]: Start isEmpty. Operand 4532 states and 24117 transitions. [2021-10-08 16:37:18,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-08 16:37:18,470 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:37:18,470 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] [2021-10-08 16:37:18,483 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2021-10-08 16:37:18,683 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 [2021-10-08 16:37:18,683 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)] === [2021-10-08 16:37:18,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:37:18,684 INFO L82 PathProgramCache]: Analyzing trace with hash -1433454686, now seen corresponding path program 11 times [2021-10-08 16:37:18,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:37:18,685 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1650528587] [2021-10-08 16:37:18,685 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:37:18,685 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:37:18,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:37:18,687 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) [2021-10-08 16:37:18,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-10-08 16:37:19,294 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-08 16:37:19,295 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:37:19,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 16:37:19,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:37:19,478 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:37:19,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:37:19,662 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:37:19,662 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:37:19,662 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1650528587] [2021-10-08 16:37:19,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1650528587] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:37:19,662 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:37:19,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-08 16:37:19,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166328898] [2021-10-08 16:37:19,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 16:37:19,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:37:19,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 16:37:19,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-08 16:37:19,664 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) [2021-10-08 16:37:26,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:37:26,008 INFO L93 Difference]: Finished difference Result 6542 states and 32899 transitions. [2021-10-08 16:37:26,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-08 16:37:26,009 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 [2021-10-08 16:37:26,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:37:26,037 INFO L225 Difference]: With dead ends: 6542 [2021-10-08 16:37:26,037 INFO L226 Difference]: Without dead ends: 6542 [2021-10-08 16:37:26,038 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 296.4ms TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-10-08 16:37:26,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6542 states. [2021-10-08 16:37:26,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6542 to 4768. [2021-10-08 16:37:26,226 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) [2021-10-08 16:37:26,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4768 states to 4768 states and 25350 transitions. [2021-10-08 16:37:26,249 INFO L78 Accepts]: Start accepts. Automaton has 4768 states and 25350 transitions. Word has length 24 [2021-10-08 16:37:26,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:37:26,250 INFO L470 AbstractCegarLoop]: Abstraction has 4768 states and 25350 transitions. [2021-10-08 16:37:26,250 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) [2021-10-08 16:37:26,250 INFO L276 IsEmpty]: Start isEmpty. Operand 4768 states and 25350 transitions. [2021-10-08 16:37:26,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-08 16:37:26,265 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:37:26,265 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] [2021-10-08 16:37:26,275 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2021-10-08 16:37:26,465 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 [2021-10-08 16:37:26,466 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)] === [2021-10-08 16:37:26,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:37:26,467 INFO L82 PathProgramCache]: Analyzing trace with hash 584665330, now seen corresponding path program 12 times [2021-10-08 16:37:26,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:37:26,469 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2138362932] [2021-10-08 16:37:26,469 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:37:26,469 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:37:26,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:37:26,470 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) [2021-10-08 16:37:26,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2021-10-08 16:37:27,028 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-08 16:37:27,028 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:37:27,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 16:37:27,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:37:27,656 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:37:27,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:37:28,071 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:37:28,071 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:37:28,072 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2138362932] [2021-10-08 16:37:28,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2138362932] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:37:28,072 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:37:28,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-08 16:37:28,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256517544] [2021-10-08 16:37:28,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 16:37:28,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:37:28,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 16:37:28,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:37:28,074 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) [2021-10-08 16:37:35,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:37:35,505 INFO L93 Difference]: Finished difference Result 5434 states and 27619 transitions. [2021-10-08 16:37:35,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-08 16:37:35,505 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 [2021-10-08 16:37:35,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:37:35,528 INFO L225 Difference]: With dead ends: 5434 [2021-10-08 16:37:35,528 INFO L226 Difference]: Without dead ends: 5384 [2021-10-08 16:37:35,528 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 393.1ms TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-10-08 16:37:35,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5384 states. [2021-10-08 16:37:35,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5384 to 4882. [2021-10-08 16:37:35,672 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) [2021-10-08 16:37:35,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4882 states to 4882 states and 25803 transitions. [2021-10-08 16:37:35,784 INFO L78 Accepts]: Start accepts. Automaton has 4882 states and 25803 transitions. Word has length 25 [2021-10-08 16:37:35,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:37:35,785 INFO L470 AbstractCegarLoop]: Abstraction has 4882 states and 25803 transitions. [2021-10-08 16:37:35,785 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) [2021-10-08 16:37:35,785 INFO L276 IsEmpty]: Start isEmpty. Operand 4882 states and 25803 transitions. [2021-10-08 16:37:35,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-08 16:37:35,799 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:37:35,800 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] [2021-10-08 16:37:35,811 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2021-10-08 16:37:36,000 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 [2021-10-08 16:37:36,001 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)] === [2021-10-08 16:37:36,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:37:36,002 INFO L82 PathProgramCache]: Analyzing trace with hash -1689751277, now seen corresponding path program 1 times [2021-10-08 16:37:36,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:37:36,003 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [945935473] [2021-10-08 16:37:36,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:37:36,003 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:37:36,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:37:36,005 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) [2021-10-08 16:37:36,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2021-10-08 16:37:36,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:37:36,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 16:37:36,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:37:37,114 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:37:37,115 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:37:37,642 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:37:37,643 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:37:37,643 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [945935473] [2021-10-08 16:37:37,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [945935473] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:37:37,643 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:37:37,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-08 16:37:37,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430509175] [2021-10-08 16:37:37,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 16:37:37,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:37:37,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 16:37:37,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:37:37,645 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) [2021-10-08 16:37:38,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:37:38,816 INFO L93 Difference]: Finished difference Result 6170 states and 31129 transitions. [2021-10-08 16:37:38,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-08 16:37:38,817 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 [2021-10-08 16:37:38,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:37:38,919 INFO L225 Difference]: With dead ends: 6170 [2021-10-08 16:37:38,919 INFO L226 Difference]: Without dead ends: 6056 [2021-10-08 16:37:38,919 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 442.9ms TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:37:38,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6056 states. [2021-10-08 16:37:39,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6056 to 5252. [2021-10-08 16:37:39,062 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) [2021-10-08 16:37:39,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5252 states to 5252 states and 28000 transitions. [2021-10-08 16:37:39,104 INFO L78 Accepts]: Start accepts. Automaton has 5252 states and 28000 transitions. Word has length 25 [2021-10-08 16:37:39,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:37:39,105 INFO L470 AbstractCegarLoop]: Abstraction has 5252 states and 28000 transitions. [2021-10-08 16:37:39,105 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) [2021-10-08 16:37:39,105 INFO L276 IsEmpty]: Start isEmpty. Operand 5252 states and 28000 transitions. [2021-10-08 16:37:39,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-08 16:37:39,135 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:37:39,135 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] [2021-10-08 16:37:39,149 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2021-10-08 16:37:39,348 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 [2021-10-08 16:37:39,349 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)] === [2021-10-08 16:37:39,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:37:39,350 INFO L82 PathProgramCache]: Analyzing trace with hash -1342782529, now seen corresponding path program 2 times [2021-10-08 16:37:39,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:37:39,351 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2050789354] [2021-10-08 16:37:39,351 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:37:39,352 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:37:39,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:37:39,352 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) [2021-10-08 16:37:39,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2021-10-08 16:37:39,872 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:37:39,873 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:37:39,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 16:37:39,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:37:40,570 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:37:40,570 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:37:41,084 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:37:41,085 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:37:41,085 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2050789354] [2021-10-08 16:37:41,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2050789354] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:37:41,085 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:37:41,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-08 16:37:41,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352393588] [2021-10-08 16:37:41,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 16:37:41,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:37:41,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 16:37:41,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:37:41,087 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) [2021-10-08 16:37:41,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:37:41,848 INFO L93 Difference]: Finished difference Result 6416 states and 32779 transitions. [2021-10-08 16:37:41,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-08 16:37:41,849 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 [2021-10-08 16:37:41,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:37:41,887 INFO L225 Difference]: With dead ends: 6416 [2021-10-08 16:37:41,887 INFO L226 Difference]: Without dead ends: 6316 [2021-10-08 16:37:41,887 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 435.0ms TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:37:41,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6316 states. [2021-10-08 16:37:42,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6316 to 5450. [2021-10-08 16:37:42,114 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) [2021-10-08 16:37:42,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5450 states to 5450 states and 29394 transitions. [2021-10-08 16:37:42,153 INFO L78 Accepts]: Start accepts. Automaton has 5450 states and 29394 transitions. Word has length 25 [2021-10-08 16:37:42,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:37:42,153 INFO L470 AbstractCegarLoop]: Abstraction has 5450 states and 29394 transitions. [2021-10-08 16:37:42,154 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) [2021-10-08 16:37:42,154 INFO L276 IsEmpty]: Start isEmpty. Operand 5450 states and 29394 transitions. [2021-10-08 16:37:42,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-08 16:37:42,181 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:37:42,181 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] [2021-10-08 16:37:42,198 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2021-10-08 16:37:42,394 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 [2021-10-08 16:37:42,395 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)] === [2021-10-08 16:37:42,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:37:42,395 INFO L82 PathProgramCache]: Analyzing trace with hash 970109075, now seen corresponding path program 3 times [2021-10-08 16:37:42,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:37:42,396 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [629463274] [2021-10-08 16:37:42,396 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:37:42,397 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:37:42,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:37:42,398 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) [2021-10-08 16:37:42,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2021-10-08 16:37:42,959 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-08 16:37:42,959 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:37:42,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 16:37:42,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:37:43,652 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:37:43,652 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:37:44,068 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:37:44,069 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:37:44,069 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [629463274] [2021-10-08 16:37:44,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [629463274] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:37:44,069 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:37:44,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-08 16:37:44,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857543221] [2021-10-08 16:37:44,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 16:37:44,070 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:37:44,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 16:37:44,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:37:44,071 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) [2021-10-08 16:37:44,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:37:44,858 INFO L93 Difference]: Finished difference Result 7150 states and 36614 transitions. [2021-10-08 16:37:44,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-08 16:37:44,859 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 [2021-10-08 16:37:44,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:37:44,888 INFO L225 Difference]: With dead ends: 7150 [2021-10-08 16:37:44,889 INFO L226 Difference]: Without dead ends: 7028 [2021-10-08 16:37:44,889 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 319.6ms TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:37:44,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7028 states. [2021-10-08 16:37:45,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7028 to 5742. [2021-10-08 16:37:45,108 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) [2021-10-08 16:37:45,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5742 states to 5742 states and 31249 transitions. [2021-10-08 16:37:45,146 INFO L78 Accepts]: Start accepts. Automaton has 5742 states and 31249 transitions. Word has length 25 [2021-10-08 16:37:45,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:37:45,146 INFO L470 AbstractCegarLoop]: Abstraction has 5742 states and 31249 transitions. [2021-10-08 16:37:45,146 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) [2021-10-08 16:37:45,146 INFO L276 IsEmpty]: Start isEmpty. Operand 5742 states and 31249 transitions. [2021-10-08 16:37:45,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-08 16:37:45,167 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:37:45,167 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] [2021-10-08 16:37:45,178 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2021-10-08 16:37:45,368 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 [2021-10-08 16:37:45,368 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)] === [2021-10-08 16:37:45,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:37:45,369 INFO L82 PathProgramCache]: Analyzing trace with hash -1052582083, now seen corresponding path program 4 times [2021-10-08 16:37:45,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:37:45,370 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1816781580] [2021-10-08 16:37:45,370 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:37:45,370 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:37:45,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:37:45,371 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) [2021-10-08 16:37:45,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2021-10-08 16:37:45,867 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:37:45,867 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:37:45,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 16:37:45,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:37:46,459 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:37:46,460 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:37:46,909 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:37:46,909 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:37:46,909 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1816781580] [2021-10-08 16:37:46,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1816781580] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:37:46,910 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:37:46,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-08 16:37:46,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109925819] [2021-10-08 16:37:46,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 16:37:46,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:37:46,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 16:37:46,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:37:46,911 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) [2021-10-08 16:37:47,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:37:47,498 INFO L93 Difference]: Finished difference Result 6696 states and 35161 transitions. [2021-10-08 16:37:47,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-08 16:37:47,499 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 [2021-10-08 16:37:47,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:37:47,529 INFO L225 Difference]: With dead ends: 6696 [2021-10-08 16:37:47,529 INFO L226 Difference]: Without dead ends: 6582 [2021-10-08 16:37:47,529 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 329.2ms TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:37:47,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6582 states. [2021-10-08 16:37:47,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6582 to 6104. [2021-10-08 16:37:47,764 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) [2021-10-08 16:37:47,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6104 states to 6104 states and 33253 transitions. [2021-10-08 16:37:47,797 INFO L78 Accepts]: Start accepts. Automaton has 6104 states and 33253 transitions. Word has length 25 [2021-10-08 16:37:47,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:37:47,797 INFO L470 AbstractCegarLoop]: Abstraction has 6104 states and 33253 transitions. [2021-10-08 16:37:47,797 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) [2021-10-08 16:37:47,798 INFO L276 IsEmpty]: Start isEmpty. Operand 6104 states and 33253 transitions. [2021-10-08 16:37:47,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-08 16:37:47,814 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:37:47,814 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] [2021-10-08 16:37:47,828 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2021-10-08 16:37:48,021 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 [2021-10-08 16:37:48,022 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)] === [2021-10-08 16:37:48,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:37:48,022 INFO L82 PathProgramCache]: Analyzing trace with hash 2043825597, now seen corresponding path program 5 times [2021-10-08 16:37:48,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:37:48,023 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [664991893] [2021-10-08 16:37:48,023 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:37:48,024 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:37:48,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:37:48,025 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) [2021-10-08 16:37:48,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2021-10-08 16:37:48,599 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-08 16:37:48,599 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:37:48,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 16:37:48,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:37:49,283 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:37:49,283 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:37:49,742 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:37:49,743 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:37:49,743 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [664991893] [2021-10-08 16:37:49,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [664991893] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:37:49,743 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:37:49,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-08 16:37:49,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495661324] [2021-10-08 16:37:49,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 16:37:49,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:37:49,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 16:37:49,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:37:49,744 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) [2021-10-08 16:37:50,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:37:50,467 INFO L93 Difference]: Finished difference Result 7016 states and 36957 transitions. [2021-10-08 16:37:50,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-08 16:37:50,468 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 [2021-10-08 16:37:50,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:37:50,494 INFO L225 Difference]: With dead ends: 7016 [2021-10-08 16:37:50,494 INFO L226 Difference]: Without dead ends: 6914 [2021-10-08 16:37:50,494 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 395.9ms TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:37:50,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6914 states. [2021-10-08 16:37:50,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6914 to 6336. [2021-10-08 16:37:50,642 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) [2021-10-08 16:37:50,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6336 states to 6336 states and 34579 transitions. [2021-10-08 16:37:50,686 INFO L78 Accepts]: Start accepts. Automaton has 6336 states and 34579 transitions. Word has length 25 [2021-10-08 16:37:50,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:37:50,686 INFO L470 AbstractCegarLoop]: Abstraction has 6336 states and 34579 transitions. [2021-10-08 16:37:50,686 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) [2021-10-08 16:37:50,687 INFO L276 IsEmpty]: Start isEmpty. Operand 6336 states and 34579 transitions. [2021-10-08 16:37:50,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-08 16:37:50,708 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:37:50,708 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] [2021-10-08 16:37:50,720 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Ended with exit code 0 [2021-10-08 16:37:50,909 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 [2021-10-08 16:37:50,909 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)] === [2021-10-08 16:37:50,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:37:50,909 INFO L82 PathProgramCache]: Analyzing trace with hash 1372055443, now seen corresponding path program 6 times [2021-10-08 16:37:50,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:37:50,910 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [306278313] [2021-10-08 16:37:50,910 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:37:50,910 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:37:50,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:37:50,911 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) [2021-10-08 16:37:50,914 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2021-10-08 16:37:51,636 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-08 16:37:51,637 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:37:51,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 16:37:51,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:37:52,223 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:37:52,224 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:37:52,607 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:37:52,607 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:37:52,607 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [306278313] [2021-10-08 16:37:52,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [306278313] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:37:52,607 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:37:52,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-08 16:37:52,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650164212] [2021-10-08 16:37:52,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 16:37:52,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:37:52,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 16:37:52,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:37:52,609 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) [2021-10-08 16:37:53,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:37:53,453 INFO L93 Difference]: Finished difference Result 8110 states and 42023 transitions. [2021-10-08 16:37:53,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-08 16:37:53,454 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 [2021-10-08 16:37:53,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:37:53,487 INFO L225 Difference]: With dead ends: 8110 [2021-10-08 16:37:53,487 INFO L226 Difference]: Without dead ends: 7996 [2021-10-08 16:37:53,487 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 307.2ms TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:37:53,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7996 states. [2021-10-08 16:37:53,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7996 to 6566. [2021-10-08 16:37:53,745 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) [2021-10-08 16:37:53,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6566 states to 6566 states and 36119 transitions. [2021-10-08 16:37:53,783 INFO L78 Accepts]: Start accepts. Automaton has 6566 states and 36119 transitions. Word has length 25 [2021-10-08 16:37:53,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:37:53,784 INFO L470 AbstractCegarLoop]: Abstraction has 6566 states and 36119 transitions. [2021-10-08 16:37:53,784 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) [2021-10-08 16:37:53,784 INFO L276 IsEmpty]: Start isEmpty. Operand 6566 states and 36119 transitions. [2021-10-08 16:37:53,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-08 16:37:53,804 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:37:53,804 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] [2021-10-08 16:37:53,817 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Ended with exit code 0 [2021-10-08 16:37:54,004 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 [2021-10-08 16:37:54,005 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)] === [2021-10-08 16:37:54,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:37:54,006 INFO L82 PathProgramCache]: Analyzing trace with hash 1843699946, now seen corresponding path program 13 times [2021-10-08 16:37:54,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:37:54,007 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1024997489] [2021-10-08 16:37:54,007 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 16:37:54,007 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:37:54,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:37:54,009 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) [2021-10-08 16:37:54,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2021-10-08 16:37:54,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:37:54,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 16:37:54,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:37:57,176 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:37:57,176 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:37:57,495 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:37:57,495 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:37:57,495 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1024997489] [2021-10-08 16:37:57,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1024997489] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:37:57,496 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:37:57,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-08 16:37:57,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49937142] [2021-10-08 16:37:57,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 16:37:57,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:37:57,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 16:37:57,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=96, Unknown=1, NotChecked=0, Total=132 [2021-10-08 16:37:57,498 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) [2021-10-08 16:38:02,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:38:02,455 INFO L93 Difference]: Finished difference Result 7378 states and 38882 transitions. [2021-10-08 16:38:02,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-08 16:38:02,456 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 [2021-10-08 16:38:02,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:38:02,570 INFO L225 Difference]: With dead ends: 7378 [2021-10-08 16:38:02,570 INFO L226 Difference]: Without dead ends: 7328 [2021-10-08 16:38:02,570 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 6305.3ms TimeCoverageRelationStatistics Valid=42, Invalid=112, Unknown=2, NotChecked=0, Total=156 [2021-10-08 16:38:02,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7328 states. [2021-10-08 16:38:02,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7328 to 6624. [2021-10-08 16:38:02,724 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) [2021-10-08 16:38:02,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6624 states to 6624 states and 36433 transitions. [2021-10-08 16:38:02,757 INFO L78 Accepts]: Start accepts. Automaton has 6624 states and 36433 transitions. Word has length 25 [2021-10-08 16:38:02,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:38:02,757 INFO L470 AbstractCegarLoop]: Abstraction has 6624 states and 36433 transitions. [2021-10-08 16:38:02,758 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) [2021-10-08 16:38:02,758 INFO L276 IsEmpty]: Start isEmpty. Operand 6624 states and 36433 transitions. [2021-10-08 16:38:02,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-08 16:38:02,777 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:38:02,777 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] [2021-10-08 16:38:02,789 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2021-10-08 16:38:02,977 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 [2021-10-08 16:38:02,978 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)] === [2021-10-08 16:38:02,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:38:02,979 INFO L82 PathProgramCache]: Analyzing trace with hash -607884846, now seen corresponding path program 9 times [2021-10-08 16:38:02,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:38:02,980 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [16744130] [2021-10-08 16:38:02,980 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:38:02,981 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:38:02,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:38:02,982 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) [2021-10-08 16:38:02,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2021-10-08 16:38:03,716 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-08 16:38:03,716 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:38:03,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 16:38:03,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:38:04,196 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:38:04,196 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:38:04,522 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:38:04,522 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:38:04,522 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [16744130] [2021-10-08 16:38:04,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [16744130] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:38:04,522 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:38:04,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-08 16:38:04,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665315872] [2021-10-08 16:38:04,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 16:38:04,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:38:04,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 16:38:04,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:38:04,524 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) [2021-10-08 16:38:06,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:38:06,620 INFO L93 Difference]: Finished difference Result 7216 states and 38494 transitions. [2021-10-08 16:38:06,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-08 16:38:06,621 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 [2021-10-08 16:38:06,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:38:06,649 INFO L225 Difference]: With dead ends: 7216 [2021-10-08 16:38:06,649 INFO L226 Difference]: Without dead ends: 7186 [2021-10-08 16:38:06,650 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 306.1ms TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-10-08 16:38:06,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7186 states. [2021-10-08 16:38:06,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7186 to 6816. [2021-10-08 16:38:06,899 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) [2021-10-08 16:38:06,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6816 states to 6816 states and 37265 transitions. [2021-10-08 16:38:06,931 INFO L78 Accepts]: Start accepts. Automaton has 6816 states and 37265 transitions. Word has length 25 [2021-10-08 16:38:06,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:38:06,931 INFO L470 AbstractCegarLoop]: Abstraction has 6816 states and 37265 transitions. [2021-10-08 16:38:06,931 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) [2021-10-08 16:38:06,931 INFO L276 IsEmpty]: Start isEmpty. Operand 6816 states and 37265 transitions. [2021-10-08 16:38:06,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-08 16:38:06,955 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:38:06,955 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] [2021-10-08 16:38:06,969 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Ended with exit code 0 [2021-10-08 16:38:07,168 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 [2021-10-08 16:38:07,169 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)] === [2021-10-08 16:38:07,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:38:07,170 INFO L82 PathProgramCache]: Analyzing trace with hash 1236588412, now seen corresponding path program 10 times [2021-10-08 16:38:07,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:38:07,170 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [591683964] [2021-10-08 16:38:07,171 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:38:07,171 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:38:07,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:38:07,172 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) [2021-10-08 16:38:07,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2021-10-08 16:38:07,837 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:38:07,837 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:38:07,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 16:38:07,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:38:10,332 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:38:10,332 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:38:10,718 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:38:10,718 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:38:10,718 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [591683964] [2021-10-08 16:38:10,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [591683964] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:38:10,718 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:38:10,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-08 16:38:10,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881543219] [2021-10-08 16:38:10,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 16:38:10,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:38:10,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 16:38:10,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=96, Unknown=1, NotChecked=0, Total=132 [2021-10-08 16:38:10,720 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) [2021-10-08 16:38:15,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:38:15,695 INFO L93 Difference]: Finished difference Result 7512 states and 39698 transitions. [2021-10-08 16:38:15,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-08 16:38:15,695 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 [2021-10-08 16:38:15,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:38:15,725 INFO L225 Difference]: With dead ends: 7512 [2021-10-08 16:38:15,725 INFO L226 Difference]: Without dead ends: 7482 [2021-10-08 16:38:15,725 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 6337.2ms TimeCoverageRelationStatistics Valid=42, Invalid=112, Unknown=2, NotChecked=0, Total=156 [2021-10-08 16:38:15,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7482 states. [2021-10-08 16:38:16,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7482 to 7070. [2021-10-08 16:38:16,025 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) [2021-10-08 16:38:16,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7070 states to 7070 states and 38490 transitions. [2021-10-08 16:38:16,069 INFO L78 Accepts]: Start accepts. Automaton has 7070 states and 38490 transitions. Word has length 25 [2021-10-08 16:38:16,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:38:16,069 INFO L470 AbstractCegarLoop]: Abstraction has 7070 states and 38490 transitions. [2021-10-08 16:38:16,070 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) [2021-10-08 16:38:16,070 INFO L276 IsEmpty]: Start isEmpty. Operand 7070 states and 38490 transitions. [2021-10-08 16:38:16,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-08 16:38:16,098 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:38:16,098 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] [2021-10-08 16:38:16,121 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Ended with exit code 0 [2021-10-08 16:38:16,313 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 [2021-10-08 16:38:16,314 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)] === [2021-10-08 16:38:16,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:38:16,315 INFO L82 PathProgramCache]: Analyzing trace with hash 983384028, now seen corresponding path program 11 times [2021-10-08 16:38:16,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:38:16,316 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [789328293] [2021-10-08 16:38:16,316 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:38:16,316 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:38:16,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:38:16,318 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) [2021-10-08 16:38:16,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2021-10-08 16:38:17,109 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-08 16:38:17,109 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:38:17,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 16:38:17,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:38:17,326 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:38:17,326 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:38:17,507 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:38:17,507 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:38:17,507 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [789328293] [2021-10-08 16:38:17,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [789328293] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:38:17,507 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:38:17,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-08 16:38:17,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648846498] [2021-10-08 16:38:17,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 16:38:17,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:38:17,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 16:38:17,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-08 16:38:17,509 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) [2021-10-08 16:38:18,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:38:18,288 INFO L93 Difference]: Finished difference Result 8810 states and 45500 transitions. [2021-10-08 16:38:18,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-08 16:38:18,288 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 [2021-10-08 16:38:18,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:38:18,322 INFO L225 Difference]: With dead ends: 8810 [2021-10-08 16:38:18,322 INFO L226 Difference]: Without dead ends: 8810 [2021-10-08 16:38:18,323 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 182.2ms TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:38:18,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8810 states. [2021-10-08 16:38:18,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8810 to 7010. [2021-10-08 16:38:18,513 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) [2021-10-08 16:38:18,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7010 states to 7010 states and 38057 transitions. [2021-10-08 16:38:18,548 INFO L78 Accepts]: Start accepts. Automaton has 7010 states and 38057 transitions. Word has length 25 [2021-10-08 16:38:18,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:38:18,548 INFO L470 AbstractCegarLoop]: Abstraction has 7010 states and 38057 transitions. [2021-10-08 16:38:18,548 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) [2021-10-08 16:38:18,549 INFO L276 IsEmpty]: Start isEmpty. Operand 7010 states and 38057 transitions. [2021-10-08 16:38:18,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-08 16:38:18,567 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:38:18,567 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] [2021-10-08 16:38:18,579 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (47)] Forceful destruction successful, exit code 0 [2021-10-08 16:38:18,768 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 [2021-10-08 16:38:18,768 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)] === [2021-10-08 16:38:18,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:38:18,769 INFO L82 PathProgramCache]: Analyzing trace with hash -1976534826, now seen corresponding path program 12 times [2021-10-08 16:38:18,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:38:18,770 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2047089137] [2021-10-08 16:38:18,770 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:38:18,770 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:38:18,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:38:18,772 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) [2021-10-08 16:38:18,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2021-10-08 16:38:19,496 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-08 16:38:19,497 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:38:19,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 16:38:19,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:38:22,070 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:38:22,071 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:38:22,405 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:38:22,406 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:38:22,406 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2047089137] [2021-10-08 16:38:22,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2047089137] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:38:22,406 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:38:22,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-08 16:38:22,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088731816] [2021-10-08 16:38:22,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 16:38:22,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:38:22,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 16:38:22,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=96, Unknown=1, NotChecked=0, Total=132 [2021-10-08 16:38:22,407 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) [2021-10-08 16:38:27,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:38:27,060 INFO L93 Difference]: Finished difference Result 7464 states and 39420 transitions. [2021-10-08 16:38:27,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-08 16:38:27,061 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 [2021-10-08 16:38:27,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:38:27,092 INFO L225 Difference]: With dead ends: 7464 [2021-10-08 16:38:27,092 INFO L226 Difference]: Without dead ends: 7434 [2021-10-08 16:38:27,092 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 6313.6ms TimeCoverageRelationStatistics Valid=42, Invalid=112, Unknown=2, NotChecked=0, Total=156 [2021-10-08 16:38:27,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7434 states. [2021-10-08 16:38:27,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7434 to 6996. [2021-10-08 16:38:27,273 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) [2021-10-08 16:38:27,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6996 states to 6996 states and 37977 transitions. [2021-10-08 16:38:27,310 INFO L78 Accepts]: Start accepts. Automaton has 6996 states and 37977 transitions. Word has length 25 [2021-10-08 16:38:27,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:38:27,310 INFO L470 AbstractCegarLoop]: Abstraction has 6996 states and 37977 transitions. [2021-10-08 16:38:27,310 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) [2021-10-08 16:38:27,311 INFO L276 IsEmpty]: Start isEmpty. Operand 6996 states and 37977 transitions. [2021-10-08 16:38:27,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-08 16:38:27,330 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:38:27,330 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] [2021-10-08 16:38:27,342 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (48)] Ended with exit code 0 [2021-10-08 16:38:27,531 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 [2021-10-08 16:38:27,531 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)] === [2021-10-08 16:38:27,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:38:27,532 INFO L82 PathProgramCache]: Analyzing trace with hash 1743604748, now seen corresponding path program 13 times [2021-10-08 16:38:27,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:38:27,533 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [766564930] [2021-10-08 16:38:27,534 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 16:38:27,534 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:38:27,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:38:27,535 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) [2021-10-08 16:38:27,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2021-10-08 16:38:28,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:38:28,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-08 16:38:28,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:38:28,623 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:38:28,624 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:38:29,677 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:38:29,678 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:38:29,678 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [766564930] [2021-10-08 16:38:29,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [766564930] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:38:29,678 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:38:29,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-08 16:38:29,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326511924] [2021-10-08 16:38:29,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 16:38:29,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:38:29,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 16:38:29,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-10-08 16:38:29,680 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) [2021-10-08 16:38:33,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:38:33,390 INFO L93 Difference]: Finished difference Result 11584 states and 57954 transitions. [2021-10-08 16:38:33,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-08 16:38:33,391 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 [2021-10-08 16:38:33,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:38:33,440 INFO L225 Difference]: With dead ends: 11584 [2021-10-08 16:38:33,440 INFO L226 Difference]: Without dead ends: 11584 [2021-10-08 16:38:33,441 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1580.1ms TimeCoverageRelationStatistics Valid=138, Invalid=368, Unknown=0, NotChecked=0, Total=506 [2021-10-08 16:38:33,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11584 states. [2021-10-08 16:38:33,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11584 to 7570. [2021-10-08 16:38:33,686 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) [2021-10-08 16:38:33,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7570 states to 7570 states and 41642 transitions. [2021-10-08 16:38:33,722 INFO L78 Accepts]: Start accepts. Automaton has 7570 states and 41642 transitions. Word has length 25 [2021-10-08 16:38:33,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:38:33,723 INFO L470 AbstractCegarLoop]: Abstraction has 7570 states and 41642 transitions. [2021-10-08 16:38:33,723 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) [2021-10-08 16:38:33,723 INFO L276 IsEmpty]: Start isEmpty. Operand 7570 states and 41642 transitions. [2021-10-08 16:38:33,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-08 16:38:33,743 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:38:33,743 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] [2021-10-08 16:38:33,754 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (49)] Forceful destruction successful, exit code 0 [2021-10-08 16:38:33,944 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 [2021-10-08 16:38:33,944 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)] === [2021-10-08 16:38:33,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:38:33,945 INFO L82 PathProgramCache]: Analyzing trace with hash 1303818364, now seen corresponding path program 14 times [2021-10-08 16:38:33,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:38:33,946 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1076418973] [2021-10-08 16:38:33,946 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:38:33,946 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:38:33,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:38:33,948 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) [2021-10-08 16:38:33,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2021-10-08 16:38:34,722 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:38:34,723 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:38:34,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 16:38:34,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:38:35,208 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:38:35,208 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:38:35,529 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:38:35,530 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:38:35,530 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1076418973] [2021-10-08 16:38:35,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1076418973] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:38:35,530 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:38:35,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-08 16:38:35,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870175611] [2021-10-08 16:38:35,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 16:38:35,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:38:35,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 16:38:35,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:38:35,531 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) [2021-10-08 16:38:36,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:38:36,792 INFO L93 Difference]: Finished difference Result 8150 states and 43728 transitions. [2021-10-08 16:38:36,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-08 16:38:36,793 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 [2021-10-08 16:38:36,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:38:36,840 INFO L225 Difference]: With dead ends: 8150 [2021-10-08 16:38:36,840 INFO L226 Difference]: Without dead ends: 8120 [2021-10-08 16:38:36,840 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 292.2ms TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-10-08 16:38:36,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8120 states. [2021-10-08 16:38:37,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8120 to 7760. [2021-10-08 16:38:37,115 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) [2021-10-08 16:38:37,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7760 states to 7760 states and 42560 transitions. [2021-10-08 16:38:37,152 INFO L78 Accepts]: Start accepts. Automaton has 7760 states and 42560 transitions. Word has length 25 [2021-10-08 16:38:37,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:38:37,152 INFO L470 AbstractCegarLoop]: Abstraction has 7760 states and 42560 transitions. [2021-10-08 16:38:37,153 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) [2021-10-08 16:38:37,153 INFO L276 IsEmpty]: Start isEmpty. Operand 7760 states and 42560 transitions. [2021-10-08 16:38:37,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-08 16:38:37,177 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:38:37,178 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] [2021-10-08 16:38:37,190 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (50)] Ended with exit code 0 [2021-10-08 16:38:37,378 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 [2021-10-08 16:38:37,379 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)] === [2021-10-08 16:38:37,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:38:37,380 INFO L82 PathProgramCache]: Analyzing trace with hash 1050613980, now seen corresponding path program 15 times [2021-10-08 16:38:37,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:38:37,381 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1517700862] [2021-10-08 16:38:37,381 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:38:37,381 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:38:37,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:38:37,383 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) [2021-10-08 16:38:37,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2021-10-08 16:38:38,253 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-08 16:38:38,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:38:38,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-08 16:38:38,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:38:38,698 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:38:38,698 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:38:40,164 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:38:40,165 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:38:40,165 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1517700862] [2021-10-08 16:38:40,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1517700862] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:38:40,165 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:38:40,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-08 16:38:40,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835250500] [2021-10-08 16:38:40,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 16:38:40,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:38:40,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 16:38:40,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2021-10-08 16:38:40,167 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) [2021-10-08 16:38:51,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:38:51,817 INFO L93 Difference]: Finished difference Result 12830 states and 65930 transitions. [2021-10-08 16:38:51,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-08 16:38:51,818 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 [2021-10-08 16:38:51,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:38:51,899 INFO L225 Difference]: With dead ends: 12830 [2021-10-08 16:38:51,899 INFO L226 Difference]: Without dead ends: 12830 [2021-10-08 16:38:51,900 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 3582.0ms TimeCoverageRelationStatistics Valid=238, Invalid=518, Unknown=0, NotChecked=0, Total=756 [2021-10-08 16:38:51,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12830 states. [2021-10-08 16:38:52,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12830 to 8396. [2021-10-08 16:38:52,315 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) [2021-10-08 16:38:52,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8396 states to 8396 states and 46343 transitions. [2021-10-08 16:38:52,384 INFO L78 Accepts]: Start accepts. Automaton has 8396 states and 46343 transitions. Word has length 25 [2021-10-08 16:38:52,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:38:52,384 INFO L470 AbstractCegarLoop]: Abstraction has 8396 states and 46343 transitions. [2021-10-08 16:38:52,385 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) [2021-10-08 16:38:52,385 INFO L276 IsEmpty]: Start isEmpty. Operand 8396 states and 46343 transitions. [2021-10-08 16:38:52,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-08 16:38:52,411 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:38:52,411 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] [2021-10-08 16:38:52,424 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (51)] Forceful destruction successful, exit code 0 [2021-10-08 16:38:52,612 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 [2021-10-08 16:38:52,612 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)] === [2021-10-08 16:38:52,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:38:52,613 INFO L82 PathProgramCache]: Analyzing trace with hash 1998090764, now seen corresponding path program 16 times [2021-10-08 16:38:52,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:38:52,614 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [781073234] [2021-10-08 16:38:52,614 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:38:52,615 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:38:52,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:38:52,616 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) [2021-10-08 16:38:52,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2021-10-08 16:38:53,413 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:38:53,413 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:38:53,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-08 16:38:53,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:38:53,806 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:38:53,807 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:38:54,796 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:38:54,796 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:38:54,796 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [781073234] [2021-10-08 16:38:54,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [781073234] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:38:54,797 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:38:54,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-08 16:38:54,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582259400] [2021-10-08 16:38:54,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 16:38:54,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:38:54,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 16:38:54,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-10-08 16:38:54,798 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) [2021-10-08 16:39:01,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:39:01,257 INFO L93 Difference]: Finished difference Result 13330 states and 67770 transitions. [2021-10-08 16:39:01,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-08 16:39:01,258 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 [2021-10-08 16:39:01,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:39:01,321 INFO L225 Difference]: With dead ends: 13330 [2021-10-08 16:39:01,322 INFO L226 Difference]: Without dead ends: 13330 [2021-10-08 16:39:01,322 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 3284.2ms TimeCoverageRelationStatistics Valid=260, Invalid=862, Unknown=0, NotChecked=0, Total=1122 [2021-10-08 16:39:01,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13330 states. [2021-10-08 16:39:01,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13330 to 9148. [2021-10-08 16:39:01,599 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) [2021-10-08 16:39:01,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9148 states to 9148 states and 50588 transitions. [2021-10-08 16:39:01,653 INFO L78 Accepts]: Start accepts. Automaton has 9148 states and 50588 transitions. Word has length 25 [2021-10-08 16:39:01,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:39:01,653 INFO L470 AbstractCegarLoop]: Abstraction has 9148 states and 50588 transitions. [2021-10-08 16:39:01,653 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) [2021-10-08 16:39:01,653 INFO L276 IsEmpty]: Start isEmpty. Operand 9148 states and 50588 transitions. [2021-10-08 16:39:01,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-08 16:39:01,683 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:39:01,683 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] [2021-10-08 16:39:01,695 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (52)] Forceful destruction successful, exit code 0 [2021-10-08 16:39:01,883 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 [2021-10-08 16:39:01,884 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)] === [2021-10-08 16:39:01,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:39:01,885 INFO L82 PathProgramCache]: Analyzing trace with hash 1997933340, now seen corresponding path program 14 times [2021-10-08 16:39:01,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:39:01,885 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [236499548] [2021-10-08 16:39:01,886 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:39:01,886 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:39:01,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:39:01,887 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) [2021-10-08 16:39:01,889 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2021-10-08 16:39:02,733 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:39:02,734 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:39:02,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 16:39:02,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:39:05,340 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:39:05,340 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:39:05,685 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:39:05,685 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:39:05,685 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [236499548] [2021-10-08 16:39:05,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [236499548] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:39:05,686 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:39:05,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-08 16:39:05,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079207691] [2021-10-08 16:39:05,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 16:39:05,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:39:05,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 16:39:05,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=96, Unknown=1, NotChecked=0, Total=132 [2021-10-08 16:39:05,687 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) [2021-10-08 16:39:10,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:39:10,903 INFO L93 Difference]: Finished difference Result 9728 states and 52406 transitions. [2021-10-08 16:39:10,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-08 16:39:10,903 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 [2021-10-08 16:39:10,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:39:10,947 INFO L225 Difference]: With dead ends: 9728 [2021-10-08 16:39:10,948 INFO L226 Difference]: Without dead ends: 9678 [2021-10-08 16:39:10,948 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 6319.7ms TimeCoverageRelationStatistics Valid=42, Invalid=112, Unknown=2, NotChecked=0, Total=156 [2021-10-08 16:39:10,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9678 states. [2021-10-08 16:39:11,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9678 to 9134. [2021-10-08 16:39:11,169 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) [2021-10-08 16:39:11,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9134 states to 9134 states and 50506 transitions. [2021-10-08 16:39:11,215 INFO L78 Accepts]: Start accepts. Automaton has 9134 states and 50506 transitions. Word has length 25 [2021-10-08 16:39:11,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:39:11,215 INFO L470 AbstractCegarLoop]: Abstraction has 9134 states and 50506 transitions. [2021-10-08 16:39:11,215 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) [2021-10-08 16:39:11,215 INFO L276 IsEmpty]: Start isEmpty. Operand 9134 states and 50506 transitions. [2021-10-08 16:39:11,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-08 16:39:11,240 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:39:11,240 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] [2021-10-08 16:39:11,254 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (53)] Forceful destruction successful, exit code 0 [2021-10-08 16:39:11,441 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 [2021-10-08 16:39:11,442 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)] === [2021-10-08 16:39:11,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:39:11,443 INFO L82 PathProgramCache]: Analyzing trace with hash -827601711, now seen corresponding path program 7 times [2021-10-08 16:39:11,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:39:11,443 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1986041283] [2021-10-08 16:39:11,444 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 16:39:11,444 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:39:11,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:39:11,445 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) [2021-10-08 16:39:11,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2021-10-08 16:39:12,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:39:12,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 16:39:12,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:39:12,846 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:39:12,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:39:13,228 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:39:13,228 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:39:13,229 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1986041283] [2021-10-08 16:39:13,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1986041283] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:39:13,229 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:39:13,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-08 16:39:13,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539136499] [2021-10-08 16:39:13,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 16:39:13,229 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:39:13,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 16:39:13,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:39:13,230 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) [2021-10-08 16:39:13,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:39:13,969 INFO L93 Difference]: Finished difference Result 10500 states and 56260 transitions. [2021-10-08 16:39:13,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-08 16:39:13,969 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 [2021-10-08 16:39:13,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:39:14,013 INFO L225 Difference]: With dead ends: 10500 [2021-10-08 16:39:14,014 INFO L226 Difference]: Without dead ends: 10400 [2021-10-08 16:39:14,014 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 316.6ms TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:39:14,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10400 states. [2021-10-08 16:39:14,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10400 to 9388. [2021-10-08 16:39:14,271 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) [2021-10-08 16:39:14,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9388 states to 9388 states and 52096 transitions. [2021-10-08 16:39:14,319 INFO L78 Accepts]: Start accepts. Automaton has 9388 states and 52096 transitions. Word has length 25 [2021-10-08 16:39:14,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:39:14,320 INFO L470 AbstractCegarLoop]: Abstraction has 9388 states and 52096 transitions. [2021-10-08 16:39:14,320 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) [2021-10-08 16:39:14,320 INFO L276 IsEmpty]: Start isEmpty. Operand 9388 states and 52096 transitions. [2021-10-08 16:39:14,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-08 16:39:14,347 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:39:14,347 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] [2021-10-08 16:39:14,360 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (54)] Forceful destruction successful, exit code 0 [2021-10-08 16:39:14,548 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 [2021-10-08 16:39:14,548 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)] === [2021-10-08 16:39:14,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:39:14,549 INFO L82 PathProgramCache]: Analyzing trace with hash -480632963, now seen corresponding path program 8 times [2021-10-08 16:39:14,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:39:14,549 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [695882650] [2021-10-08 16:39:14,550 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:39:14,550 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:39:14,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:39:14,551 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) [2021-10-08 16:39:14,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (55)] Waiting until timeout for monitored process [2021-10-08 16:39:15,464 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:39:15,464 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:39:15,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 16:39:15,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:39:16,073 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:39:16,073 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:39:16,478 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:39:16,479 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:39:16,479 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [695882650] [2021-10-08 16:39:16,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [695882650] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:39:16,479 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:39:16,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-08 16:39:16,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197541188] [2021-10-08 16:39:16,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 16:39:16,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:39:16,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 16:39:16,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:39:16,480 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) [2021-10-08 16:39:17,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:39:17,308 INFO L93 Difference]: Finished difference Result 10642 states and 57324 transitions. [2021-10-08 16:39:17,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-08 16:39:17,309 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 [2021-10-08 16:39:17,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:39:17,352 INFO L225 Difference]: With dead ends: 10642 [2021-10-08 16:39:17,352 INFO L226 Difference]: Without dead ends: 10554 [2021-10-08 16:39:17,353 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 326.7ms TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:39:17,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10554 states. [2021-10-08 16:39:17,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10554 to 9494. [2021-10-08 16:39:17,605 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) [2021-10-08 16:39:17,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9494 states to 9494 states and 52977 transitions. [2021-10-08 16:39:17,656 INFO L78 Accepts]: Start accepts. Automaton has 9494 states and 52977 transitions. Word has length 25 [2021-10-08 16:39:17,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:39:17,657 INFO L470 AbstractCegarLoop]: Abstraction has 9494 states and 52977 transitions. [2021-10-08 16:39:17,657 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) [2021-10-08 16:39:17,657 INFO L276 IsEmpty]: Start isEmpty. Operand 9494 states and 52977 transitions. [2021-10-08 16:39:17,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-08 16:39:17,685 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:39:17,685 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] [2021-10-08 16:39:17,698 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (55)] Forceful destruction successful, exit code 0 [2021-10-08 16:39:17,885 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 [2021-10-08 16:39:17,886 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)] === [2021-10-08 16:39:17,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:39:17,886 INFO L82 PathProgramCache]: Analyzing trace with hash 729116051, now seen corresponding path program 9 times [2021-10-08 16:39:17,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:39:17,887 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1559652826] [2021-10-08 16:39:17,887 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:39:17,887 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:39:17,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:39:17,889 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) [2021-10-08 16:39:17,891 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (56)] Waiting until timeout for monitored process [2021-10-08 16:39:18,870 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-08 16:39:18,870 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:39:18,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 16:39:18,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:39:19,471 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:39:19,471 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:39:19,901 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:39:19,901 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:39:19,901 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1559652826] [2021-10-08 16:39:19,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1559652826] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:39:19,901 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:39:19,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-08 16:39:19,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096197202] [2021-10-08 16:39:19,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 16:39:19,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:39:19,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 16:39:19,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:39:19,903 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) [2021-10-08 16:39:20,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:39:20,739 INFO L93 Difference]: Finished difference Result 11296 states and 60686 transitions. [2021-10-08 16:39:20,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-08 16:39:20,740 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 [2021-10-08 16:39:20,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:39:20,796 INFO L225 Difference]: With dead ends: 11296 [2021-10-08 16:39:20,797 INFO L226 Difference]: Without dead ends: 11174 [2021-10-08 16:39:20,797 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 350.7ms TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:39:20,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11174 states. [2021-10-08 16:39:21,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11174 to 9686. [2021-10-08 16:39:21,082 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) [2021-10-08 16:39:21,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9686 states to 9686 states and 54334 transitions. [2021-10-08 16:39:21,136 INFO L78 Accepts]: Start accepts. Automaton has 9686 states and 54334 transitions. Word has length 25 [2021-10-08 16:39:21,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:39:21,136 INFO L470 AbstractCegarLoop]: Abstraction has 9686 states and 54334 transitions. [2021-10-08 16:39:21,136 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) [2021-10-08 16:39:21,136 INFO L276 IsEmpty]: Start isEmpty. Operand 9686 states and 54334 transitions. [2021-10-08 16:39:21,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-08 16:39:21,165 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:39:21,165 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] [2021-10-08 16:39:21,181 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (56)] Forceful destruction successful, exit code 0 [2021-10-08 16:39:21,366 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 [2021-10-08 16:39:21,366 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)] === [2021-10-08 16:39:21,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:39:21,367 INFO L82 PathProgramCache]: Analyzing trace with hash -11679341, now seen corresponding path program 10 times [2021-10-08 16:39:21,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:39:21,368 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1039766876] [2021-10-08 16:39:21,368 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:39:21,369 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:39:21,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:39:21,370 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) [2021-10-08 16:39:21,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (57)] Waiting until timeout for monitored process [2021-10-08 16:39:22,249 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:39:22,250 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:39:22,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 16:39:22,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:39:22,872 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:39:22,872 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:39:23,376 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:39:23,376 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:39:23,376 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1039766876] [2021-10-08 16:39:23,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1039766876] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:39:23,377 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:39:23,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-08 16:39:23,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183661199] [2021-10-08 16:39:23,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 16:39:23,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:39:23,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 16:39:23,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:39:23,379 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) [2021-10-08 16:39:27,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:39:27,417 INFO L93 Difference]: Finished difference Result 10669 states and 58420 transitions. [2021-10-08 16:39:27,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-08 16:39:27,417 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 [2021-10-08 16:39:27,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:39:27,463 INFO L225 Difference]: With dead ends: 10669 [2021-10-08 16:39:27,464 INFO L226 Difference]: Without dead ends: 10587 [2021-10-08 16:39:27,464 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 330.4ms TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:39:27,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10587 states. [2021-10-08 16:39:27,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10587 to 9954. [2021-10-08 16:39:27,719 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) [2021-10-08 16:39:27,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9954 states to 9954 states and 55867 transitions. [2021-10-08 16:39:27,771 INFO L78 Accepts]: Start accepts. Automaton has 9954 states and 55867 transitions. Word has length 25 [2021-10-08 16:39:27,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:39:27,771 INFO L470 AbstractCegarLoop]: Abstraction has 9954 states and 55867 transitions. [2021-10-08 16:39:27,771 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) [2021-10-08 16:39:27,771 INFO L276 IsEmpty]: Start isEmpty. Operand 9954 states and 55867 transitions. [2021-10-08 16:39:27,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-08 16:39:27,799 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:39:27,799 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] [2021-10-08 16:39:27,812 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (57)] Forceful destruction successful, exit code 0 [2021-10-08 16:39:27,999 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 [2021-10-08 16:39:28,000 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)] === [2021-10-08 16:39:28,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:39:28,000 INFO L82 PathProgramCache]: Analyzing trace with hash 1138866579, now seen corresponding path program 11 times [2021-10-08 16:39:28,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:39:28,001 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [497341893] [2021-10-08 16:39:28,001 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:39:28,002 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:39:28,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:39:28,003 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) [2021-10-08 16:39:28,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (58)] Waiting until timeout for monitored process [2021-10-08 16:39:28,993 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-08 16:39:28,994 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:39:28,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 16:39:29,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:39:29,559 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:39:29,559 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:39:30,069 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:39:30,069 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:39:30,069 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [497341893] [2021-10-08 16:39:30,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [497341893] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:39:30,070 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:39:30,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-08 16:39:30,070 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384849670] [2021-10-08 16:39:30,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 16:39:30,070 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:39:30,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 16:39:30,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:39:30,071 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) [2021-10-08 16:39:31,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:39:31,002 INFO L93 Difference]: Finished difference Result 11654 states and 63071 transitions. [2021-10-08 16:39:31,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-08 16:39:31,002 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 [2021-10-08 16:39:31,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:39:31,056 INFO L225 Difference]: With dead ends: 11654 [2021-10-08 16:39:31,057 INFO L226 Difference]: Without dead ends: 11548 [2021-10-08 16:39:31,057 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 331.2ms TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:39:31,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11548 states. [2021-10-08 16:39:31,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11548 to 10114. [2021-10-08 16:39:31,344 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) [2021-10-08 16:39:31,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10114 states to 10114 states and 57010 transitions. [2021-10-08 16:39:31,397 INFO L78 Accepts]: Start accepts. Automaton has 10114 states and 57010 transitions. Word has length 25 [2021-10-08 16:39:31,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:39:31,397 INFO L470 AbstractCegarLoop]: Abstraction has 10114 states and 57010 transitions. [2021-10-08 16:39:31,397 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) [2021-10-08 16:39:31,397 INFO L276 IsEmpty]: Start isEmpty. Operand 10114 states and 57010 transitions. [2021-10-08 16:39:31,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-08 16:39:31,427 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:39:31,427 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] [2021-10-08 16:39:31,440 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (58)] Forceful destruction successful, exit code 0 [2021-10-08 16:39:31,627 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 [2021-10-08 16:39:31,628 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)] === [2021-10-08 16:39:31,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:39:31,628 INFO L82 PathProgramCache]: Analyzing trace with hash -797030699, now seen corresponding path program 12 times [2021-10-08 16:39:31,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:39:31,629 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [573726495] [2021-10-08 16:39:31,629 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:39:31,630 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:39:31,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:39:31,631 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) [2021-10-08 16:39:31,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (59)] Waiting until timeout for monitored process [2021-10-08 16:39:32,613 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-08 16:39:32,613 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:39:32,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 16:39:32,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:39:33,310 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:39:33,310 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:39:33,786 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:39:33,786 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:39:33,786 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [573726495] [2021-10-08 16:39:33,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [573726495] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:39:33,786 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:39:33,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-08 16:39:33,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83882950] [2021-10-08 16:39:33,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 16:39:33,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:39:33,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 16:39:33,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:39:33,788 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) [2021-10-08 16:39:34,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:39:34,538 INFO L93 Difference]: Finished difference Result 11056 states and 60878 transitions. [2021-10-08 16:39:34,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-08 16:39:34,538 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 [2021-10-08 16:39:34,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:39:34,583 INFO L225 Difference]: With dead ends: 11056 [2021-10-08 16:39:34,583 INFO L226 Difference]: Without dead ends: 10976 [2021-10-08 16:39:34,584 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 395.3ms TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:39:34,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10976 states. [2021-10-08 16:39:34,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10976 to 10250. [2021-10-08 16:39:34,846 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) [2021-10-08 16:39:34,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10250 states to 10250 states and 57871 transitions. [2021-10-08 16:39:34,901 INFO L78 Accepts]: Start accepts. Automaton has 10250 states and 57871 transitions. Word has length 25 [2021-10-08 16:39:34,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:39:34,901 INFO L470 AbstractCegarLoop]: Abstraction has 10250 states and 57871 transitions. [2021-10-08 16:39:34,902 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) [2021-10-08 16:39:34,902 INFO L276 IsEmpty]: Start isEmpty. Operand 10250 states and 57871 transitions. [2021-10-08 16:39:34,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-08 16:39:34,931 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:39:34,931 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] [2021-10-08 16:39:34,944 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (59)] Forceful destruction successful, exit code 0 [2021-10-08 16:39:35,132 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 [2021-10-08 16:39:35,132 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)] === [2021-10-08 16:39:35,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:39:35,133 INFO L82 PathProgramCache]: Analyzing trace with hash -1493521596, now seen corresponding path program 15 times [2021-10-08 16:39:35,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:39:35,134 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [132249713] [2021-10-08 16:39:35,134 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:39:35,134 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:39:35,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:39:35,135 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) [2021-10-08 16:39:35,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (60)] Waiting until timeout for monitored process [2021-10-08 16:39:36,278 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-08 16:39:36,278 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:39:36,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 16:39:36,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:39:36,872 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:39:36,872 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:39:37,175 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:39:37,175 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:39:37,175 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [132249713] [2021-10-08 16:39:37,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [132249713] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:39:37,175 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:39:37,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-08 16:39:37,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994897018] [2021-10-08 16:39:37,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 16:39:37,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:39:37,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 16:39:37,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:39:37,176 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) [2021-10-08 16:39:44,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:39:44,188 INFO L93 Difference]: Finished difference Result 10954 states and 60354 transitions. [2021-10-08 16:39:44,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-08 16:39:44,189 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 [2021-10-08 16:39:44,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:39:44,238 INFO L225 Difference]: With dead ends: 10954 [2021-10-08 16:39:44,239 INFO L226 Difference]: Without dead ends: 10904 [2021-10-08 16:39:44,239 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 322.0ms TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-10-08 16:39:44,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10904 states. [2021-10-08 16:39:44,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10904 to 10400. [2021-10-08 16:39:44,506 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) [2021-10-08 16:39:44,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10400 states to 10400 states and 58570 transitions. [2021-10-08 16:39:44,562 INFO L78 Accepts]: Start accepts. Automaton has 10400 states and 58570 transitions. Word has length 25 [2021-10-08 16:39:44,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:39:44,563 INFO L470 AbstractCegarLoop]: Abstraction has 10400 states and 58570 transitions. [2021-10-08 16:39:44,563 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) [2021-10-08 16:39:44,563 INFO L276 IsEmpty]: Start isEmpty. Operand 10400 states and 58570 transitions. [2021-10-08 16:39:44,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-08 16:39:44,593 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:39:44,593 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] [2021-10-08 16:39:44,605 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (60)] Forceful destruction successful, exit code 0 [2021-10-08 16:39:44,793 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 [2021-10-08 16:39:44,794 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)] === [2021-10-08 16:39:44,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:39:44,794 INFO L82 PathProgramCache]: Analyzing trace with hash 548231165, now seen corresponding path program 13 times [2021-10-08 16:39:44,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:39:44,795 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [336906708] [2021-10-08 16:39:44,795 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 16:39:44,796 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:39:44,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:39:44,797 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) [2021-10-08 16:39:44,798 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (61)] Waiting until timeout for monitored process [2021-10-08 16:39:45,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:39:45,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 16:39:45,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:39:46,432 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:39:46,432 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:39:46,823 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:39:46,824 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:39:46,824 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [336906708] [2021-10-08 16:39:46,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [336906708] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:39:46,829 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:39:46,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-08 16:39:46,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689628363] [2021-10-08 16:39:46,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 16:39:46,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:39:46,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 16:39:46,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:39:46,831 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) [2021-10-08 16:39:47,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:39:47,734 INFO L93 Difference]: Finished difference Result 12470 states and 67701 transitions. [2021-10-08 16:39:47,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-08 16:39:47,734 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 [2021-10-08 16:39:47,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:39:47,790 INFO L225 Difference]: With dead ends: 12470 [2021-10-08 16:39:47,791 INFO L226 Difference]: Without dead ends: 12352 [2021-10-08 16:39:47,791 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 310.5ms TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:39:47,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12352 states. [2021-10-08 16:39:48,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12352 to 10610. [2021-10-08 16:39:48,280 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) [2021-10-08 16:39:48,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10610 states to 10610 states and 60025 transitions. [2021-10-08 16:39:48,343 INFO L78 Accepts]: Start accepts. Automaton has 10610 states and 60025 transitions. Word has length 25 [2021-10-08 16:39:48,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:39:48,343 INFO L470 AbstractCegarLoop]: Abstraction has 10610 states and 60025 transitions. [2021-10-08 16:39:48,344 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) [2021-10-08 16:39:48,344 INFO L276 IsEmpty]: Start isEmpty. Operand 10610 states and 60025 transitions. [2021-10-08 16:39:48,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-08 16:39:48,380 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:39:48,380 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] [2021-10-08 16:39:48,392 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (61)] Forceful destruction successful, exit code 0 [2021-10-08 16:39:48,580 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 [2021-10-08 16:39:48,581 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)] === [2021-10-08 16:39:48,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:39:48,582 INFO L82 PathProgramCache]: Analyzing trace with hash 608577811, now seen corresponding path program 14 times [2021-10-08 16:39:48,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:39:48,582 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1737404342] [2021-10-08 16:39:48,583 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:39:48,583 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:39:48,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:39:48,585 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) [2021-10-08 16:39:48,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (62)] Waiting until timeout for monitored process [2021-10-08 16:39:49,702 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:39:49,702 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:39:49,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 16:39:49,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:39:50,287 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:39:50,287 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:39:50,682 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:39:50,682 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:39:50,682 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1737404342] [2021-10-08 16:39:50,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1737404342] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:39:50,682 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:39:50,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-08 16:39:50,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125041529] [2021-10-08 16:39:50,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 16:39:50,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:39:50,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 16:39:50,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:39:50,683 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) [2021-10-08 16:39:51,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:39:51,573 INFO L93 Difference]: Finished difference Result 12732 states and 69392 transitions. [2021-10-08 16:39:51,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-08 16:39:51,573 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 [2021-10-08 16:39:51,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:39:51,628 INFO L225 Difference]: With dead ends: 12732 [2021-10-08 16:39:51,628 INFO L226 Difference]: Without dead ends: 12634 [2021-10-08 16:39:51,628 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 315.3ms TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:39:51,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12634 states. [2021-10-08 16:39:52,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12634 to 10750. [2021-10-08 16:39:52,085 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) [2021-10-08 16:39:52,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10750 states to 10750 states and 61109 transitions. [2021-10-08 16:39:52,149 INFO L78 Accepts]: Start accepts. Automaton has 10750 states and 61109 transitions. Word has length 25 [2021-10-08 16:39:52,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:39:52,149 INFO L470 AbstractCegarLoop]: Abstraction has 10750 states and 61109 transitions. [2021-10-08 16:39:52,149 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) [2021-10-08 16:39:52,149 INFO L276 IsEmpty]: Start isEmpty. Operand 10750 states and 61109 transitions. [2021-10-08 16:39:52,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-08 16:39:52,183 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:39:52,184 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] [2021-10-08 16:39:52,197 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (62)] Forceful destruction successful, exit code 0 [2021-10-08 16:39:52,384 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 [2021-10-08 16:39:52,384 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)] === [2021-10-08 16:39:52,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:39:52,385 INFO L82 PathProgramCache]: Analyzing trace with hash 71564471, now seen corresponding path program 15 times [2021-10-08 16:39:52,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:39:52,386 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1825124227] [2021-10-08 16:39:52,386 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:39:52,387 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:39:52,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:39:52,388 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) [2021-10-08 16:39:52,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (63)] Waiting until timeout for monitored process [2021-10-08 16:39:53,528 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-08 16:39:53,528 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:39:53,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 16:39:53,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:39:54,218 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:39:54,218 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:39:54,583 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:39:54,584 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:39:54,584 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1825124227] [2021-10-08 16:39:54,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1825124227] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:39:54,584 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:39:54,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-08 16:39:54,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909601998] [2021-10-08 16:39:54,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 16:39:54,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:39:54,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 16:39:54,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:39:54,586 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) [2021-10-08 16:39:55,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:39:55,351 INFO L93 Difference]: Finished difference Result 12702 states and 69617 transitions. [2021-10-08 16:39:55,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-08 16:39:55,351 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 [2021-10-08 16:39:55,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:39:55,410 INFO L225 Difference]: With dead ends: 12702 [2021-10-08 16:39:55,410 INFO L226 Difference]: Without dead ends: 12588 [2021-10-08 16:39:55,411 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 284.5ms TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:39:55,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12588 states. [2021-10-08 16:39:55,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12588 to 10932. [2021-10-08 16:39:55,741 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) [2021-10-08 16:39:56,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10932 states to 10932 states and 62351 transitions. [2021-10-08 16:39:56,016 INFO L78 Accepts]: Start accepts. Automaton has 10932 states and 62351 transitions. Word has length 25 [2021-10-08 16:39:56,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:39:56,016 INFO L470 AbstractCegarLoop]: Abstraction has 10932 states and 62351 transitions. [2021-10-08 16:39:56,016 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) [2021-10-08 16:39:56,016 INFO L276 IsEmpty]: Start isEmpty. Operand 10932 states and 62351 transitions. [2021-10-08 16:39:56,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-08 16:39:56,050 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:39:56,050 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] [2021-10-08 16:39:56,063 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (63)] Forceful destruction successful, exit code 0 [2021-10-08 16:39:56,257 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 [2021-10-08 16:39:56,258 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)] === [2021-10-08 16:39:56,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:39:56,259 INFO L82 PathProgramCache]: Analyzing trace with hash -2085320443, now seen corresponding path program 16 times [2021-10-08 16:39:56,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:39:56,259 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1855774909] [2021-10-08 16:39:56,260 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:39:56,260 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:39:56,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:39:56,261 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) [2021-10-08 16:39:56,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (64)] Waiting until timeout for monitored process [2021-10-08 16:39:57,347 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:39:57,347 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:39:57,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 16:39:57,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:39:58,096 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:39:58,096 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:39:58,495 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:39:58,496 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:39:58,496 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1855774909] [2021-10-08 16:39:58,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1855774909] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:39:58,496 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:39:58,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-08 16:39:58,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724099348] [2021-10-08 16:39:58,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 16:39:58,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:39:58,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 16:39:58,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:39:58,498 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) [2021-10-08 16:39:59,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:39:59,448 INFO L93 Difference]: Finished difference Result 11956 states and 66331 transitions. [2021-10-08 16:39:59,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-08 16:39:59,449 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 [2021-10-08 16:39:59,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:39:59,513 INFO L225 Difference]: With dead ends: 11956 [2021-10-08 16:39:59,514 INFO L226 Difference]: Without dead ends: 11878 [2021-10-08 16:39:59,514 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 315.1ms TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:39:59,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11878 states. [2021-10-08 16:39:59,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11878 to 10916. [2021-10-08 16:39:59,897 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) [2021-10-08 16:39:59,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10916 states to 10916 states and 62224 transitions. [2021-10-08 16:39:59,956 INFO L78 Accepts]: Start accepts. Automaton has 10916 states and 62224 transitions. Word has length 25 [2021-10-08 16:39:59,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:39:59,957 INFO L470 AbstractCegarLoop]: Abstraction has 10916 states and 62224 transitions. [2021-10-08 16:39:59,957 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) [2021-10-08 16:39:59,957 INFO L276 IsEmpty]: Start isEmpty. Operand 10916 states and 62224 transitions. [2021-10-08 16:39:59,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-08 16:39:59,988 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:39:59,988 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] [2021-10-08 16:40:00,002 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (64)] Forceful destruction successful, exit code 0 [2021-10-08 16:40:00,195 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 [2021-10-08 16:40:00,196 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)] === [2021-10-08 16:40:00,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:40:00,196 INFO L82 PathProgramCache]: Analyzing trace with hash 2098582681, now seen corresponding path program 17 times [2021-10-08 16:40:00,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:40:00,197 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1771336416] [2021-10-08 16:40:00,197 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:40:00,198 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:40:00,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:40:00,199 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) [2021-10-08 16:40:00,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (65)] Waiting until timeout for monitored process [2021-10-08 16:40:01,382 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-08 16:40:01,383 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:40:01,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 16:40:01,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:40:02,088 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:40:02,088 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:40:02,495 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:40:02,495 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:40:02,495 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1771336416] [2021-10-08 16:40:02,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1771336416] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:40:02,495 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:40:02,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-08 16:40:02,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400103511] [2021-10-08 16:40:02,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 16:40:02,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:40:02,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 16:40:02,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:40:02,498 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) [2021-10-08 16:40:03,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:40:03,673 INFO L93 Difference]: Finished difference Result 12938 states and 71100 transitions. [2021-10-08 16:40:03,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-08 16:40:03,673 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 [2021-10-08 16:40:03,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:40:03,733 INFO L225 Difference]: With dead ends: 12938 [2021-10-08 16:40:03,733 INFO L226 Difference]: Without dead ends: 12858 [2021-10-08 16:40:03,734 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 327.5ms TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:40:03,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12858 states. [2021-10-08 16:40:04,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12858 to 11036. [2021-10-08 16:40:04,153 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) [2021-10-08 16:40:04,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11036 states to 11036 states and 63166 transitions. [2021-10-08 16:40:04,214 INFO L78 Accepts]: Start accepts. Automaton has 11036 states and 63166 transitions. Word has length 25 [2021-10-08 16:40:04,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:40:04,214 INFO L470 AbstractCegarLoop]: Abstraction has 11036 states and 63166 transitions. [2021-10-08 16:40:04,214 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) [2021-10-08 16:40:04,214 INFO L276 IsEmpty]: Start isEmpty. Operand 11036 states and 63166 transitions. [2021-10-08 16:40:04,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-08 16:40:04,359 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:40:04,359 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] [2021-10-08 16:40:04,383 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (65)] Forceful destruction successful, exit code 0 [2021-10-08 16:40:04,559 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 [2021-10-08 16:40:04,560 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)] === [2021-10-08 16:40:04,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:40:04,561 INFO L82 PathProgramCache]: Analyzing trace with hash -902756182, now seen corresponding path program 16 times [2021-10-08 16:40:04,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:40:04,561 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1321819605] [2021-10-08 16:40:04,562 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:40:04,562 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:40:04,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:40:04,563 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) [2021-10-08 16:40:04,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (66)] Waiting until timeout for monitored process [2021-10-08 16:40:05,640 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:40:05,641 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:40:05,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-08 16:40:05,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:40:05,974 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:40:05,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:40:06,402 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:40:06,402 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:40:06,402 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1321819605] [2021-10-08 16:40:06,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1321819605] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:40:06,402 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:40:06,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-10-08 16:40:06,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119652308] [2021-10-08 16:40:06,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-08 16:40:06,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:40:06,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-08 16:40:06,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2021-10-08 16:40:06,413 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) [2021-10-08 16:40:09,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:40:09,479 INFO L93 Difference]: Finished difference Result 21444 states and 112701 transitions. [2021-10-08 16:40:09,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-08 16:40:09,480 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 [2021-10-08 16:40:09,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:40:09,622 INFO L225 Difference]: With dead ends: 21444 [2021-10-08 16:40:09,622 INFO L226 Difference]: Without dead ends: 21444 [2021-10-08 16:40:09,622 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 1410.5ms TimeCoverageRelationStatistics Valid=171, Invalid=821, Unknown=0, NotChecked=0, Total=992 [2021-10-08 16:40:09,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21444 states. [2021-10-08 16:40:10,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21444 to 12500. [2021-10-08 16:40:10,202 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) [2021-10-08 16:40:10,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12500 states to 12500 states and 71411 transitions. [2021-10-08 16:40:10,275 INFO L78 Accepts]: Start accepts. Automaton has 12500 states and 71411 transitions. Word has length 26 [2021-10-08 16:40:10,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:40:10,276 INFO L470 AbstractCegarLoop]: Abstraction has 12500 states and 71411 transitions. [2021-10-08 16:40:10,276 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) [2021-10-08 16:40:10,276 INFO L276 IsEmpty]: Start isEmpty. Operand 12500 states and 71411 transitions. [2021-10-08 16:40:10,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-08 16:40:10,483 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:40:10,483 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] [2021-10-08 16:40:10,501 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (66)] Forceful destruction successful, exit code 0 [2021-10-08 16:40:10,697 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 [2021-10-08 16:40:10,698 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)] === [2021-10-08 16:40:10,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:40:10,698 INFO L82 PathProgramCache]: Analyzing trace with hash 1124832149, now seen corresponding path program 17 times [2021-10-08 16:40:10,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:40:10,699 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1816517636] [2021-10-08 16:40:10,699 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:40:10,700 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:40:10,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:40:10,701 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) [2021-10-08 16:40:10,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (67)] Waiting until timeout for monitored process [2021-10-08 16:40:12,034 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-08 16:40:12,035 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:40:12,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-08 16:40:12,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:40:12,300 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:40:12,300 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:40:12,741 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:40:12,741 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:40:12,741 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1816517636] [2021-10-08 16:40:12,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1816517636] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:40:12,741 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:40:12,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-10-08 16:40:12,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390840624] [2021-10-08 16:40:12,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-08 16:40:12,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:40:12,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-08 16:40:12,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-10-08 16:40:12,742 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) [2021-10-08 16:40:15,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:40:15,054 INFO L93 Difference]: Finished difference Result 20016 states and 105817 transitions. [2021-10-08 16:40:15,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-08 16:40:15,055 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 [2021-10-08 16:40:15,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:40:15,165 INFO L225 Difference]: With dead ends: 20016 [2021-10-08 16:40:15,165 INFO L226 Difference]: Without dead ends: 19974 [2021-10-08 16:40:15,166 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 1183.2ms TimeCoverageRelationStatistics Valid=125, Invalid=687, Unknown=0, NotChecked=0, Total=812 [2021-10-08 16:40:15,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19974 states. [2021-10-08 16:40:15,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19974 to 13226. [2021-10-08 16:40:15,806 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) [2021-10-08 16:40:15,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13226 states to 13226 states and 74666 transitions. [2021-10-08 16:40:15,876 INFO L78 Accepts]: Start accepts. Automaton has 13226 states and 74666 transitions. Word has length 26 [2021-10-08 16:40:15,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:40:15,876 INFO L470 AbstractCegarLoop]: Abstraction has 13226 states and 74666 transitions. [2021-10-08 16:40:15,876 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) [2021-10-08 16:40:15,876 INFO L276 IsEmpty]: Start isEmpty. Operand 13226 states and 74666 transitions. [2021-10-08 16:40:15,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-08 16:40:15,915 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:40:15,915 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] [2021-10-08 16:40:15,929 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (67)] Forceful destruction successful, exit code 0 [2021-10-08 16:40:16,121 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 [2021-10-08 16:40:16,122 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)] === [2021-10-08 16:40:16,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:40:16,123 INFO L82 PathProgramCache]: Analyzing trace with hash 34880404, now seen corresponding path program 18 times [2021-10-08 16:40:16,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:40:16,124 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [448944761] [2021-10-08 16:40:16,124 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:40:16,124 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:40:16,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:40:16,126 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) [2021-10-08 16:40:16,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (68)] Waiting until timeout for monitored process [2021-10-08 16:40:17,471 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-08 16:40:17,471 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:40:17,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-08 16:40:17,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:40:19,051 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:40:19,051 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:40:19,529 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:40:19,529 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:40:19,530 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [448944761] [2021-10-08 16:40:19,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [448944761] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:40:19,530 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:40:19,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-10-08 16:40:19,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222593811] [2021-10-08 16:40:19,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-08 16:40:19,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:40:19,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-08 16:40:19,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2021-10-08 16:40:19,531 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) [2021-10-08 16:40:30,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:40:30,745 INFO L93 Difference]: Finished difference Result 28922 states and 151405 transitions. [2021-10-08 16:40:30,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-08 16:40:30,746 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 [2021-10-08 16:40:30,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:40:30,904 INFO L225 Difference]: With dead ends: 28922 [2021-10-08 16:40:30,904 INFO L226 Difference]: Without dead ends: 28922 [2021-10-08 16:40:30,904 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 2846.0ms TimeCoverageRelationStatistics Valid=161, Invalid=651, Unknown=0, NotChecked=0, Total=812 [2021-10-08 16:40:30,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28922 states. [2021-10-08 16:40:31,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28922 to 15144. [2021-10-08 16:40:31,771 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) [2021-10-08 16:40:31,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15144 states to 15144 states and 87659 transitions. [2021-10-08 16:40:31,869 INFO L78 Accepts]: Start accepts. Automaton has 15144 states and 87659 transitions. Word has length 26 [2021-10-08 16:40:31,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:40:31,870 INFO L470 AbstractCegarLoop]: Abstraction has 15144 states and 87659 transitions. [2021-10-08 16:40:31,870 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) [2021-10-08 16:40:31,870 INFO L276 IsEmpty]: Start isEmpty. Operand 15144 states and 87659 transitions. [2021-10-08 16:40:32,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-08 16:40:32,138 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:40:32,138 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] [2021-10-08 16:40:32,173 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (68)] Forceful destruction successful, exit code 0 [2021-10-08 16:40:32,339 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 [2021-10-08 16:40:32,339 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)] === [2021-10-08 16:40:32,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:40:32,339 INFO L82 PathProgramCache]: Analyzing trace with hash -1892326997, now seen corresponding path program 19 times [2021-10-08 16:40:32,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:40:32,340 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [604845428] [2021-10-08 16:40:32,340 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 16:40:32,340 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:40:32,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:40:32,341 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) [2021-10-08 16:40:32,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (69)] Waiting until timeout for monitored process [2021-10-08 16:40:33,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:40:33,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-08 16:40:33,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:40:34,005 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:40:34,005 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:40:34,370 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:40:34,371 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:40:34,371 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [604845428] [2021-10-08 16:40:34,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [604845428] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:40:34,371 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:40:34,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-08 16:40:34,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433604279] [2021-10-08 16:40:34,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 16:40:34,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:40:34,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 16:40:34,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-08 16:40:34,373 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) [2021-10-08 16:40:58,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:40:58,329 INFO L93 Difference]: Finished difference Result 25508 states and 136135 transitions. [2021-10-08 16:40:58,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-08 16:40:58,329 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 [2021-10-08 16:40:58,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:40:58,469 INFO L225 Difference]: With dead ends: 25508 [2021-10-08 16:40:58,469 INFO L226 Difference]: Without dead ends: 25452 [2021-10-08 16:40:58,469 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1211.1ms TimeCoverageRelationStatistics Valid=100, Invalid=500, Unknown=0, NotChecked=0, Total=600 [2021-10-08 16:40:58,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25452 states. [2021-10-08 16:40:59,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25452 to 16330. [2021-10-08 16:40:59,342 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) [2021-10-08 16:40:59,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16330 states to 16330 states and 95526 transitions. [2021-10-08 16:40:59,442 INFO L78 Accepts]: Start accepts. Automaton has 16330 states and 95526 transitions. Word has length 26 [2021-10-08 16:40:59,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:40:59,442 INFO L470 AbstractCegarLoop]: Abstraction has 16330 states and 95526 transitions. [2021-10-08 16:40:59,442 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) [2021-10-08 16:40:59,442 INFO L276 IsEmpty]: Start isEmpty. Operand 16330 states and 95526 transitions. [2021-10-08 16:40:59,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-08 16:40:59,649 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:40:59,649 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] [2021-10-08 16:40:59,670 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (69)] Forceful destruction successful, exit code 0 [2021-10-08 16:40:59,849 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 [2021-10-08 16:40:59,850 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)] === [2021-10-08 16:40:59,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:40:59,850 INFO L82 PathProgramCache]: Analyzing trace with hash 356278434, now seen corresponding path program 20 times [2021-10-08 16:40:59,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:40:59,851 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [20549910] [2021-10-08 16:40:59,851 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:40:59,852 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:40:59,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:40:59,853 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) [2021-10-08 16:40:59,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (70)] Waiting until timeout for monitored process [2021-10-08 16:41:01,067 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:41:01,067 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:41:01,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-08 16:41:01,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:41:01,375 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:41:01,376 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:41:01,666 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:41:01,666 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:41:01,666 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [20549910] [2021-10-08 16:41:01,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [20549910] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:41:01,666 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:41:01,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-08 16:41:01,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689653467] [2021-10-08 16:41:01,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 16:41:01,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:41:01,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 16:41:01,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-10-08 16:41:01,667 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) [2021-10-08 16:41:16,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:41:16,945 INFO L93 Difference]: Finished difference Result 31846 states and 168088 transitions. [2021-10-08 16:41:16,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-08 16:41:16,945 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 [2021-10-08 16:41:16,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:41:17,295 INFO L225 Difference]: With dead ends: 31846 [2021-10-08 16:41:17,295 INFO L226 Difference]: Without dead ends: 31846 [2021-10-08 16:41:17,295 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 2604.9ms TimeCoverageRelationStatistics Valid=162, Invalid=768, Unknown=0, NotChecked=0, Total=930 [2021-10-08 16:41:17,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31846 states. [2021-10-08 16:41:18,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31846 to 17736. [2021-10-08 16:41:18,381 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) [2021-10-08 16:41:18,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17736 states to 17736 states and 104606 transitions. [2021-10-08 16:41:18,493 INFO L78 Accepts]: Start accepts. Automaton has 17736 states and 104606 transitions. Word has length 26 [2021-10-08 16:41:18,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:41:18,493 INFO L470 AbstractCegarLoop]: Abstraction has 17736 states and 104606 transitions. [2021-10-08 16:41:18,494 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) [2021-10-08 16:41:18,494 INFO L276 IsEmpty]: Start isEmpty. Operand 17736 states and 104606 transitions. [2021-10-08 16:41:18,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-08 16:41:18,563 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:41:18,563 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] [2021-10-08 16:41:18,578 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (70)] Forceful destruction successful, exit code 0 [2021-10-08 16:41:18,767 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 [2021-10-08 16:41:18,768 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)] === [2021-10-08 16:41:18,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:41:18,768 INFO L82 PathProgramCache]: Analyzing trace with hash 542453827, now seen corresponding path program 21 times [2021-10-08 16:41:18,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:41:18,769 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1626654603] [2021-10-08 16:41:18,769 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:41:18,770 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:41:18,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:41:18,771 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) [2021-10-08 16:41:18,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (71)] Waiting until timeout for monitored process [2021-10-08 16:41:20,288 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-08 16:41:20,289 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:41:20,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-08 16:41:20,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:41:20,554 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:41:20,554 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:41:20,826 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:41:20,826 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:41:20,826 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1626654603] [2021-10-08 16:41:20,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1626654603] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:41:20,826 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:41:20,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-08 16:41:20,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342652087] [2021-10-08 16:41:20,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 16:41:20,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:41:20,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 16:41:20,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-10-08 16:41:20,827 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) [2021-10-08 16:41:23,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:41:23,770 INFO L93 Difference]: Finished difference Result 27070 states and 146253 transitions. [2021-10-08 16:41:23,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-08 16:41:23,770 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 [2021-10-08 16:41:23,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:41:23,906 INFO L225 Difference]: With dead ends: 27070 [2021-10-08 16:41:23,906 INFO L226 Difference]: Without dead ends: 27034 [2021-10-08 16:41:23,906 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 618.9ms TimeCoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2021-10-08 16:41:24,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27034 states. [2021-10-08 16:41:24,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27034 to 17762. [2021-10-08 16:41:24,888 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) [2021-10-08 16:41:25,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17762 states to 17762 states and 104647 transitions. [2021-10-08 16:41:25,005 INFO L78 Accepts]: Start accepts. Automaton has 17762 states and 104647 transitions. Word has length 26 [2021-10-08 16:41:25,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:41:25,005 INFO L470 AbstractCegarLoop]: Abstraction has 17762 states and 104647 transitions. [2021-10-08 16:41:25,006 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) [2021-10-08 16:41:25,006 INFO L276 IsEmpty]: Start isEmpty. Operand 17762 states and 104647 transitions. [2021-10-08 16:41:25,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-08 16:41:25,234 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:41:25,234 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] [2021-10-08 16:41:25,251 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (71)] Forceful destruction successful, exit code 0 [2021-10-08 16:41:25,448 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 [2021-10-08 16:41:25,450 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)] === [2021-10-08 16:41:25,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:41:25,450 INFO L82 PathProgramCache]: Analyzing trace with hash -348836181, now seen corresponding path program 22 times [2021-10-08 16:41:25,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:41:25,452 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1764038248] [2021-10-08 16:41:25,452 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:41:25,452 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:41:25,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:41:25,453 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) [2021-10-08 16:41:25,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (72)] Waiting until timeout for monitored process [2021-10-08 16:41:26,700 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:41:26,700 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:41:26,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 16:41:26,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:41:26,954 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:41:26,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:41:27,366 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:41:27,367 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:41:27,367 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1764038248] [2021-10-08 16:41:27,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1764038248] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:41:27,367 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:41:27,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-08 16:41:27,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287422177] [2021-10-08 16:41:27,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 16:41:27,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:41:27,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 16:41:27,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-10-08 16:41:27,369 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) [2021-10-08 16:41:28,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:41:28,873 INFO L93 Difference]: Finished difference Result 28408 states and 153508 transitions. [2021-10-08 16:41:28,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-08 16:41:28,873 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 [2021-10-08 16:41:28,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:41:29,043 INFO L225 Difference]: With dead ends: 28408 [2021-10-08 16:41:29,043 INFO L226 Difference]: Without dead ends: 28408 [2021-10-08 16:41:29,044 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 478.2ms TimeCoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2021-10-08 16:41:29,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28408 states. [2021-10-08 16:41:29,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28408 to 17618. [2021-10-08 16:41:29,957 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) [2021-10-08 16:41:30,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17618 states to 17618 states and 103582 transitions. [2021-10-08 16:41:30,245 INFO L78 Accepts]: Start accepts. Automaton has 17618 states and 103582 transitions. Word has length 26 [2021-10-08 16:41:30,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:41:30,245 INFO L470 AbstractCegarLoop]: Abstraction has 17618 states and 103582 transitions. [2021-10-08 16:41:30,245 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) [2021-10-08 16:41:30,245 INFO L276 IsEmpty]: Start isEmpty. Operand 17618 states and 103582 transitions. [2021-10-08 16:41:30,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-08 16:41:30,322 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:41:30,322 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] [2021-10-08 16:41:30,340 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (72)] Forceful destruction successful, exit code 0 [2021-10-08 16:41:30,535 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 [2021-10-08 16:41:30,536 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)] === [2021-10-08 16:41:30,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:41:30,537 INFO L82 PathProgramCache]: Analyzing trace with hash -380778180, now seen corresponding path program 23 times [2021-10-08 16:41:30,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:41:30,537 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2003022588] [2021-10-08 16:41:30,538 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:41:30,538 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:41:30,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:41:30,539 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) [2021-10-08 16:41:30,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (73)] Waiting until timeout for monitored process [2021-10-08 16:41:31,937 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-08 16:41:31,937 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:41:31,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-08 16:41:31,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:41:32,436 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:41:32,437 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:41:33,190 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:41:33,190 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:41:33,190 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2003022588] [2021-10-08 16:41:33,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2003022588] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:41:33,191 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:41:33,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-10-08 16:41:33,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522607398] [2021-10-08 16:41:33,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-08 16:41:33,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:41:33,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-08 16:41:33,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2021-10-08 16:41:33,192 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) [2021-10-08 16:41:39,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:41:39,245 INFO L93 Difference]: Finished difference Result 45226 states and 240337 transitions. [2021-10-08 16:41:39,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-08 16:41:39,245 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 [2021-10-08 16:41:39,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:41:39,561 INFO L225 Difference]: With dead ends: 45226 [2021-10-08 16:41:39,562 INFO L226 Difference]: Without dead ends: 45212 [2021-10-08 16:41:39,562 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 3451.5ms TimeCoverageRelationStatistics Valid=248, Invalid=744, Unknown=0, NotChecked=0, Total=992 [2021-10-08 16:41:39,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45212 states. [2021-10-08 16:41:40,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45212 to 19190. [2021-10-08 16:41:40,958 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) [2021-10-08 16:41:41,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19190 states to 19190 states and 113850 transitions. [2021-10-08 16:41:41,080 INFO L78 Accepts]: Start accepts. Automaton has 19190 states and 113850 transitions. Word has length 26 [2021-10-08 16:41:41,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:41:41,080 INFO L470 AbstractCegarLoop]: Abstraction has 19190 states and 113850 transitions. [2021-10-08 16:41:41,080 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) [2021-10-08 16:41:41,080 INFO L276 IsEmpty]: Start isEmpty. Operand 19190 states and 113850 transitions. [2021-10-08 16:41:41,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-08 16:41:41,145 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:41:41,145 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] [2021-10-08 16:41:41,158 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (73)] Forceful destruction successful, exit code 0 [2021-10-08 16:41:41,345 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 [2021-10-08 16:41:41,346 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)] === [2021-10-08 16:41:41,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:41:41,347 INFO L82 PathProgramCache]: Analyzing trace with hash 1314024188, now seen corresponding path program 24 times [2021-10-08 16:41:41,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:41:41,348 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1728554463] [2021-10-08 16:41:41,348 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:41:41,348 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:41:41,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:41:41,349 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) [2021-10-08 16:41:41,350 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (74)] Waiting until timeout for monitored process [2021-10-08 16:41:43,029 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-08 16:41:43,029 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:41:43,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-08 16:41:43,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:41:45,274 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:41:45,275 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:41:45,564 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:41:45,564 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:41:45,564 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1728554463] [2021-10-08 16:41:45,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1728554463] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:41:45,565 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:41:45,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-08 16:41:45,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076758950] [2021-10-08 16:41:45,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 16:41:45,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:41:45,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 16:41:45,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=144, Unknown=1, NotChecked=0, Total=182 [2021-10-08 16:41:45,566 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) [2021-10-08 16:41:56,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:41:56,252 INFO L93 Difference]: Finished difference Result 35498 states and 191323 transitions. [2021-10-08 16:41:56,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-08 16:41:56,253 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 [2021-10-08 16:41:56,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:41:56,508 INFO L225 Difference]: With dead ends: 35498 [2021-10-08 16:41:56,508 INFO L226 Difference]: Without dead ends: 35498 [2021-10-08 16:41:56,508 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 6774.4ms TimeCoverageRelationStatistics Valid=105, Invalid=445, Unknown=2, NotChecked=0, Total=552 [2021-10-08 16:41:56,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35498 states. [2021-10-08 16:41:57,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35498 to 20712. [2021-10-08 16:41:57,815 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) [2021-10-08 16:41:57,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20712 states to 20712 states and 124381 transitions. [2021-10-08 16:41:57,957 INFO L78 Accepts]: Start accepts. Automaton has 20712 states and 124381 transitions. Word has length 26 [2021-10-08 16:41:57,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:41:57,957 INFO L470 AbstractCegarLoop]: Abstraction has 20712 states and 124381 transitions. [2021-10-08 16:41:57,958 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) [2021-10-08 16:41:57,958 INFO L276 IsEmpty]: Start isEmpty. Operand 20712 states and 124381 transitions. [2021-10-08 16:41:58,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-08 16:41:58,036 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:41:58,036 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] [2021-10-08 16:41:58,050 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (74)] Forceful destruction successful, exit code 0 [2021-10-08 16:41:58,236 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 [2021-10-08 16:41:58,237 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)] === [2021-10-08 16:41:58,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:41:58,237 INFO L82 PathProgramCache]: Analyzing trace with hash 1500199581, now seen corresponding path program 25 times [2021-10-08 16:41:58,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:41:58,238 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [505141297] [2021-10-08 16:41:58,238 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 16:41:58,239 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:41:58,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:41:58,240 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) [2021-10-08 16:41:58,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (75)] Waiting until timeout for monitored process [2021-10-08 16:41:59,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:41:59,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-08 16:41:59,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:42:01,978 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:42:01,979 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:42:02,336 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:42:02,336 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:42:02,337 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [505141297] [2021-10-08 16:42:02,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [505141297] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:42:02,337 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:42:02,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-08 16:42:02,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648392240] [2021-10-08 16:42:02,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 16:42:02,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:42:02,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 16:42:02,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=144, Unknown=1, NotChecked=0, Total=182 [2021-10-08 16:42:02,338 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) [2021-10-08 16:42:15,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:42:15,246 INFO L93 Difference]: Finished difference Result 32100 states and 174041 transitions. [2021-10-08 16:42:15,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-08 16:42:15,248 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 [2021-10-08 16:42:15,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:42:15,577 INFO L225 Difference]: With dead ends: 32100 [2021-10-08 16:42:15,577 INFO L226 Difference]: Without dead ends: 32048 [2021-10-08 16:42:15,578 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 10869.7ms TimeCoverageRelationStatistics Valid=123, Invalid=427, Unknown=2, NotChecked=0, Total=552 [2021-10-08 16:42:15,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32048 states. [2021-10-08 16:42:16,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32048 to 20920. [2021-10-08 16:42:16,759 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) [2021-10-08 16:42:17,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20920 states to 20920 states and 125391 transitions. [2021-10-08 16:42:17,162 INFO L78 Accepts]: Start accepts. Automaton has 20920 states and 125391 transitions. Word has length 26 [2021-10-08 16:42:17,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:42:17,162 INFO L470 AbstractCegarLoop]: Abstraction has 20920 states and 125391 transitions. [2021-10-08 16:42:17,162 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) [2021-10-08 16:42:17,169 INFO L276 IsEmpty]: Start isEmpty. Operand 20920 states and 125391 transitions. [2021-10-08 16:42:17,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-08 16:42:17,263 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:42:17,263 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] [2021-10-08 16:42:17,286 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (75)] Forceful destruction successful, exit code 0 [2021-10-08 16:42:17,477 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 [2021-10-08 16:42:17,477 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)] === [2021-10-08 16:42:17,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:42:17,478 INFO L82 PathProgramCache]: Analyzing trace with hash 608909573, now seen corresponding path program 26 times [2021-10-08 16:42:17,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:42:17,478 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2001383643] [2021-10-08 16:42:17,478 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:42:17,479 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:42:17,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:42:17,479 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) [2021-10-08 16:42:17,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (76)] Waiting until timeout for monitored process [2021-10-08 16:42:18,833 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:42:18,833 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:42:18,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-08 16:42:18,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:42:21,096 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:42:21,097 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:42:21,408 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:42:21,408 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:42:21,408 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2001383643] [2021-10-08 16:42:21,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2001383643] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:42:21,409 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:42:21,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-08 16:42:21,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714288469] [2021-10-08 16:42:21,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 16:42:21,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:42:21,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 16:42:21,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=144, Unknown=1, NotChecked=0, Total=182 [2021-10-08 16:42:21,410 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) [2021-10-08 16:42:28,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:42:28,515 INFO L93 Difference]: Finished difference Result 29846 states and 164991 transitions. [2021-10-08 16:42:28,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-08 16:42:28,516 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 [2021-10-08 16:42:28,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:42:28,884 INFO L225 Difference]: With dead ends: 29846 [2021-10-08 16:42:28,884 INFO L226 Difference]: Without dead ends: 29838 [2021-10-08 16:42:28,885 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 7034.2ms TimeCoverageRelationStatistics Valid=103, Invalid=401, Unknown=2, NotChecked=0, Total=506 [2021-10-08 16:42:28,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29838 states. [2021-10-08 16:42:29,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29838 to 20432. [2021-10-08 16:42:29,684 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) [2021-10-08 16:42:30,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20432 states to 20432 states and 122139 transitions. [2021-10-08 16:42:30,038 INFO L78 Accepts]: Start accepts. Automaton has 20432 states and 122139 transitions. Word has length 26 [2021-10-08 16:42:30,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:42:30,039 INFO L470 AbstractCegarLoop]: Abstraction has 20432 states and 122139 transitions. [2021-10-08 16:42:30,039 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) [2021-10-08 16:42:30,039 INFO L276 IsEmpty]: Start isEmpty. Operand 20432 states and 122139 transitions. [2021-10-08 16:42:30,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-08 16:42:30,114 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:42:30,114 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] [2021-10-08 16:42:30,129 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (76)] Forceful destruction successful, exit code 0 [2021-10-08 16:42:30,314 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 [2021-10-08 16:42:30,315 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)] === [2021-10-08 16:42:30,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:42:30,316 INFO L82 PathProgramCache]: Analyzing trace with hash 930307603, now seen corresponding path program 27 times [2021-10-08 16:42:30,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:42:30,317 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [204815135] [2021-10-08 16:42:30,317 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:42:30,317 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:42:30,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:42:30,318 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) [2021-10-08 16:42:30,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (77)] Waiting until timeout for monitored process [2021-10-08 16:42:31,793 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-08 16:42:31,793 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:42:31,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-08 16:42:32,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:42:32,242 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:42:32,242 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:42:32,625 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:42:32,626 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:42:32,626 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [204815135] [2021-10-08 16:42:32,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [204815135] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:42:32,626 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:42:32,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-08 16:42:32,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178075415] [2021-10-08 16:42:32,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 16:42:32,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:42:32,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 16:42:32,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-08 16:42:32,627 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) [2021-10-08 16:42:40,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:42:40,059 INFO L93 Difference]: Finished difference Result 29354 states and 164008 transitions. [2021-10-08 16:42:40,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-08 16:42:40,060 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 [2021-10-08 16:42:40,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:42:40,239 INFO L225 Difference]: With dead ends: 29354 [2021-10-08 16:42:40,240 INFO L226 Difference]: Without dead ends: 29354 [2021-10-08 16:42:40,240 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 723.5ms TimeCoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2021-10-08 16:42:40,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29354 states. [2021-10-08 16:42:41,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29354 to 20606. [2021-10-08 16:42:41,489 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) [2021-10-08 16:42:41,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20606 states to 20606 states and 123394 transitions. [2021-10-08 16:42:41,657 INFO L78 Accepts]: Start accepts. Automaton has 20606 states and 123394 transitions. Word has length 26 [2021-10-08 16:42:41,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:42:41,657 INFO L470 AbstractCegarLoop]: Abstraction has 20606 states and 123394 transitions. [2021-10-08 16:42:41,658 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) [2021-10-08 16:42:41,658 INFO L276 IsEmpty]: Start isEmpty. Operand 20606 states and 123394 transitions. [2021-10-08 16:42:41,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-08 16:42:41,744 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:42:41,744 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] [2021-10-08 16:42:41,762 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (77)] Ended with exit code 0 [2021-10-08 16:42:41,958 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 [2021-10-08 16:42:41,958 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)] === [2021-10-08 16:42:41,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:42:41,959 INFO L82 PathProgramCache]: Analyzing trace with hash -1664520562, now seen corresponding path program 17 times [2021-10-08 16:42:41,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:42:41,960 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [273706266] [2021-10-08 16:42:41,960 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:42:41,960 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:42:41,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:42:41,962 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) [2021-10-08 16:42:41,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (78)] Waiting until timeout for monitored process [2021-10-08 16:42:43,435 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-08 16:42:43,435 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:42:43,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-08 16:42:43,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:42:43,899 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:42:43,899 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:42:44,375 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:42:44,375 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:42:44,376 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [273706266] [2021-10-08 16:42:44,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [273706266] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:42:44,376 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:42:44,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-08 16:42:44,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272127938] [2021-10-08 16:42:44,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 16:42:44,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:42:44,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 16:42:44,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-10-08 16:42:44,377 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) [2021-10-08 16:42:48,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:42:48,268 INFO L93 Difference]: Finished difference Result 25044 states and 142233 transitions. [2021-10-08 16:42:48,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-08 16:42:48,269 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 [2021-10-08 16:42:48,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:42:48,411 INFO L225 Difference]: With dead ends: 25044 [2021-10-08 16:42:48,412 INFO L226 Difference]: Without dead ends: 24982 [2021-10-08 16:42:48,412 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1167.9ms TimeCoverageRelationStatistics Valid=104, Invalid=496, Unknown=0, NotChecked=0, Total=600 [2021-10-08 16:42:48,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24982 states. [2021-10-08 16:42:49,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24982 to 21732. [2021-10-08 16:42:49,196 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) [2021-10-08 16:42:49,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21732 states to 21732 states and 129015 transitions. [2021-10-08 16:42:49,321 INFO L78 Accepts]: Start accepts. Automaton has 21732 states and 129015 transitions. Word has length 26 [2021-10-08 16:42:49,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:42:49,321 INFO L470 AbstractCegarLoop]: Abstraction has 21732 states and 129015 transitions. [2021-10-08 16:42:49,321 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) [2021-10-08 16:42:49,321 INFO L276 IsEmpty]: Start isEmpty. Operand 21732 states and 129015 transitions. [2021-10-08 16:42:49,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-08 16:42:49,665 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:42:49,665 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] [2021-10-08 16:42:49,698 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (78)] Forceful destruction successful, exit code 0 [2021-10-08 16:42:49,865 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 [2021-10-08 16:42:49,866 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)] === [2021-10-08 16:42:49,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:42:49,866 INFO L82 PathProgramCache]: Analyzing trace with hash -2123076518, now seen corresponding path program 18 times [2021-10-08 16:42:49,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:42:49,867 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1816443100] [2021-10-08 16:42:49,867 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:42:49,867 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:42:49,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:42:49,868 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) [2021-10-08 16:42:49,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (79)] Waiting until timeout for monitored process [2021-10-08 16:42:51,347 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-08 16:42:51,347 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:42:51,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-08 16:42:51,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:42:51,694 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:42:51,695 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:42:52,124 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:42:52,124 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:42:52,124 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1816443100] [2021-10-08 16:42:52,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1816443100] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:42:52,124 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:42:52,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-08 16:42:52,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063024306] [2021-10-08 16:42:52,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 16:42:52,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:42:52,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 16:42:52,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-10-08 16:42:52,125 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) [2021-10-08 16:42:56,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:42:56,237 INFO L93 Difference]: Finished difference Result 26316 states and 150789 transitions. [2021-10-08 16:42:56,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-08 16:42:56,238 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 [2021-10-08 16:42:56,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:42:56,395 INFO L225 Difference]: With dead ends: 26316 [2021-10-08 16:42:56,395 INFO L226 Difference]: Without dead ends: 26316 [2021-10-08 16:42:56,395 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 984.7ms TimeCoverageRelationStatistics Valid=92, Invalid=460, Unknown=0, NotChecked=0, Total=552 [2021-10-08 16:42:56,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26316 states. [2021-10-08 16:42:57,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26316 to 21612. [2021-10-08 16:42:57,246 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) [2021-10-08 16:42:57,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21612 states to 21612 states and 128862 transitions. [2021-10-08 16:42:57,381 INFO L78 Accepts]: Start accepts. Automaton has 21612 states and 128862 transitions. Word has length 26 [2021-10-08 16:42:57,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:42:57,381 INFO L470 AbstractCegarLoop]: Abstraction has 21612 states and 128862 transitions. [2021-10-08 16:42:57,381 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) [2021-10-08 16:42:57,382 INFO L276 IsEmpty]: Start isEmpty. Operand 21612 states and 128862 transitions. [2021-10-08 16:42:57,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-08 16:42:57,763 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:42:57,763 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] [2021-10-08 16:42:57,783 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (79)] Forceful destruction successful, exit code 0 [2021-10-08 16:42:57,976 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 [2021-10-08 16:42:57,977 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)] === [2021-10-08 16:42:57,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:42:57,978 INFO L82 PathProgramCache]: Analyzing trace with hash 299743754, now seen corresponding path program 19 times [2021-10-08 16:42:57,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:42:57,979 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [959556695] [2021-10-08 16:42:57,979 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 16:42:57,979 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:42:57,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:42:57,981 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) [2021-10-08 16:42:57,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (80)] Waiting until timeout for monitored process [2021-10-08 16:42:59,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:42:59,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-08 16:42:59,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:42:59,892 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:42:59,893 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:43:00,428 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:43:00,429 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:43:00,429 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [959556695] [2021-10-08 16:43:00,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [959556695] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:43:00,429 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:43:00,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-08 16:43:00,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909229588] [2021-10-08 16:43:00,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 16:43:00,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:43:00,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 16:43:00,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-10-08 16:43:00,431 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) [2021-10-08 16:43:08,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:43:08,416 INFO L93 Difference]: Finished difference Result 29484 states and 164266 transitions. [2021-10-08 16:43:08,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-08 16:43:08,417 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 [2021-10-08 16:43:08,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:43:08,749 INFO L225 Difference]: With dead ends: 29484 [2021-10-08 16:43:08,749 INFO L226 Difference]: Without dead ends: 29442 [2021-10-08 16:43:08,750 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 1729.0ms TimeCoverageRelationStatistics Valid=146, Invalid=784, Unknown=0, NotChecked=0, Total=930 [2021-10-08 16:43:08,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29442 states. [2021-10-08 16:43:09,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29442 to 22940. [2021-10-08 16:43:09,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22940 states, 22939 states have (on average 5.972753825362919) internal successors, (137009), 22939 states have internal predecessors, (137009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:43:09,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22940 states to 22940 states and 137009 transitions. [2021-10-08 16:43:09,927 INFO L78 Accepts]: Start accepts. Automaton has 22940 states and 137009 transitions. Word has length 26 [2021-10-08 16:43:09,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:43:09,927 INFO L470 AbstractCegarLoop]: Abstraction has 22940 states and 137009 transitions. [2021-10-08 16:43:09,927 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) [2021-10-08 16:43:09,927 INFO L276 IsEmpty]: Start isEmpty. Operand 22940 states and 137009 transitions. [2021-10-08 16:43:10,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-08 16:43:10,006 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:43:10,007 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] [2021-10-08 16:43:10,021 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (80)] Ended with exit code 0 [2021-10-08 16:43:10,207 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 [2021-10-08 16:43:10,208 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)] === [2021-10-08 16:43:10,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:43:10,208 INFO L82 PathProgramCache]: Analyzing trace with hash -1509879284, now seen corresponding path program 20 times [2021-10-08 16:43:10,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:43:10,209 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [811760614] [2021-10-08 16:43:10,209 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:43:10,209 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:43:10,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:43:10,211 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) [2021-10-08 16:43:10,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (81)] Waiting until timeout for monitored process [2021-10-08 16:43:11,905 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:43:11,905 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:43:11,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-08 16:43:11,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:43:12,324 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:43:12,324 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:43:12,902 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:43:12,903 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:43:12,903 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [811760614] [2021-10-08 16:43:12,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [811760614] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:43:12,903 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:43:12,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-10-08 16:43:12,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133346992] [2021-10-08 16:43:12,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-08 16:43:12,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:43:12,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-08 16:43:12,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2021-10-08 16:43:12,905 INFO L87 Difference]: Start difference. First operand 22940 states and 137009 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) [2021-10-08 16:43:22,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:43:22,952 INFO L93 Difference]: Finished difference Result 32678 states and 184313 transitions. [2021-10-08 16:43:22,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-08 16:43:22,953 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 [2021-10-08 16:43:22,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:43:23,307 INFO L225 Difference]: With dead ends: 32678 [2021-10-08 16:43:23,307 INFO L226 Difference]: Without dead ends: 32636 [2021-10-08 16:43:23,307 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 1307.3ms TimeCoverageRelationStatistics Valid=136, Invalid=566, Unknown=0, NotChecked=0, Total=702 [2021-10-08 16:43:23,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32636 states. [2021-10-08 16:43:24,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32636 to 24818. [2021-10-08 16:43:24,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24818 states, 24817 states have (on average 6.017890961840673) internal successors, (149346), 24817 states have internal predecessors, (149346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:43:24,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24818 states to 24818 states and 149346 transitions. [2021-10-08 16:43:24,847 INFO L78 Accepts]: Start accepts. Automaton has 24818 states and 149346 transitions. Word has length 26 [2021-10-08 16:43:24,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:43:24,848 INFO L470 AbstractCegarLoop]: Abstraction has 24818 states and 149346 transitions. [2021-10-08 16:43:24,848 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) [2021-10-08 16:43:24,848 INFO L276 IsEmpty]: Start isEmpty. Operand 24818 states and 149346 transitions. [2021-10-08 16:43:24,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-08 16:43:24,974 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:43:24,974 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] [2021-10-08 16:43:24,989 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (81)] Forceful destruction successful, exit code 0 [2021-10-08 16:43:25,179 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 [2021-10-08 16:43:25,179 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)] === [2021-10-08 16:43:25,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:43:25,180 INFO L82 PathProgramCache]: Analyzing trace with hash -387654364, now seen corresponding path program 21 times [2021-10-08 16:43:25,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:43:25,181 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [98050077] [2021-10-08 16:43:25,181 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:43:25,181 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:43:25,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:43:25,183 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) [2021-10-08 16:43:25,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (82)] Waiting until timeout for monitored process [2021-10-08 16:43:26,734 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-08 16:43:26,735 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:43:26,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-08 16:43:26,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:43:27,132 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:43:27,133 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:43:28,355 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:43:28,355 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:43:28,356 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [98050077] [2021-10-08 16:43:28,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [98050077] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:43:28,356 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:43:28,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-10-08 16:43:28,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716559027] [2021-10-08 16:43:28,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-08 16:43:28,357 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:43:28,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-08 16:43:28,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2021-10-08 16:43:28,357 INFO L87 Difference]: Start difference. First operand 24818 states and 149346 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) [2021-10-08 16:43:34,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:43:34,541 INFO L93 Difference]: Finished difference Result 44202 states and 245243 transitions. [2021-10-08 16:43:34,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-08 16:43:34,542 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 [2021-10-08 16:43:34,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:43:35,236 INFO L225 Difference]: With dead ends: 44202 [2021-10-08 16:43:35,237 INFO L226 Difference]: Without dead ends: 44162 [2021-10-08 16:43:35,237 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 3735.2ms TimeCoverageRelationStatistics Valid=271, Invalid=1211, Unknown=0, NotChecked=0, Total=1482 [2021-10-08 16:43:35,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44162 states. [2021-10-08 16:43:36,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44162 to 29428. [2021-10-08 16:43:36,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29428 states, 29427 states have (on average 6.06867842457607) internal successors, (178583), 29427 states have internal predecessors, (178583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:43:37,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29428 states to 29428 states and 178583 transitions. [2021-10-08 16:43:37,153 INFO L78 Accepts]: Start accepts. Automaton has 29428 states and 178583 transitions. Word has length 26 [2021-10-08 16:43:37,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:43:37,153 INFO L470 AbstractCegarLoop]: Abstraction has 29428 states and 178583 transitions. [2021-10-08 16:43:37,154 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) [2021-10-08 16:43:37,154 INFO L276 IsEmpty]: Start isEmpty. Operand 29428 states and 178583 transitions. [2021-10-08 16:43:37,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-08 16:43:37,620 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:43:37,620 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] [2021-10-08 16:43:37,638 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (82)] Forceful destruction successful, exit code 0 [2021-10-08 16:43:37,833 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 [2021-10-08 16:43:37,834 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)] === [2021-10-08 16:43:37,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:43:37,835 INFO L82 PathProgramCache]: Analyzing trace with hash -1656754486, now seen corresponding path program 22 times [2021-10-08 16:43:37,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:43:37,835 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [443364366] [2021-10-08 16:43:37,836 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:43:37,836 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:43:37,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:43:37,838 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) [2021-10-08 16:43:37,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (83)] Waiting until timeout for monitored process [2021-10-08 16:43:39,057 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:43:39,057 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:43:39,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-08 16:43:39,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:43:39,556 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:43:39,556 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:43:40,081 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:43:40,081 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:43:40,082 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [443364366] [2021-10-08 16:43:40,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [443364366] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:43:40,082 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:43:40,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-08 16:43:40,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649938190] [2021-10-08 16:43:40,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 16:43:40,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:43:40,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 16:43:40,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-10-08 16:43:40,083 INFO L87 Difference]: Start difference. First operand 29428 states and 178583 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) [2021-10-08 16:43:45,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:43:45,575 INFO L93 Difference]: Finished difference Result 40184 states and 226105 transitions. [2021-10-08 16:43:45,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-08 16:43:45,576 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 [2021-10-08 16:43:45,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:43:46,064 INFO L225 Difference]: With dead ends: 40184 [2021-10-08 16:43:46,065 INFO L226 Difference]: Without dead ends: 40184 [2021-10-08 16:43:46,065 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1327.3ms TimeCoverageRelationStatistics Valid=115, Invalid=485, Unknown=0, NotChecked=0, Total=600 [2021-10-08 16:43:46,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40184 states. [2021-10-08 16:43:47,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40184 to 29434. [2021-10-08 16:43:47,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29434 states, 29433 states have (on average 6.056331328780621) internal successors, (178256), 29433 states have internal predecessors, (178256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:43:47,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29434 states to 29434 states and 178256 transitions. [2021-10-08 16:43:47,982 INFO L78 Accepts]: Start accepts. Automaton has 29434 states and 178256 transitions. Word has length 26 [2021-10-08 16:43:47,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:43:47,982 INFO L470 AbstractCegarLoop]: Abstraction has 29434 states and 178256 transitions. [2021-10-08 16:43:47,983 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) [2021-10-08 16:43:47,983 INFO L276 IsEmpty]: Start isEmpty. Operand 29434 states and 178256 transitions. [2021-10-08 16:43:48,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-08 16:43:48,405 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:43:48,405 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] [2021-10-08 16:43:48,424 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (83)] Forceful destruction successful, exit code 0 [2021-10-08 16:43:48,619 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 [2021-10-08 16:43:48,620 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)] === [2021-10-08 16:43:48,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:43:48,620 INFO L82 PathProgramCache]: Analyzing trace with hash -749658564, now seen corresponding path program 23 times [2021-10-08 16:43:48,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:43:48,621 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [727904355] [2021-10-08 16:43:48,622 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:43:48,622 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:43:48,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:43:48,623 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) [2021-10-08 16:43:48,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (84)] Waiting until timeout for monitored process [2021-10-08 16:43:50,135 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-08 16:43:50,135 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:43:50,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-08 16:43:50,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:43:52,551 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:43:52,551 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:43:53,165 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:43:53,165 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:43:53,165 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [727904355] [2021-10-08 16:43:53,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [727904355] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:43:53,165 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:43:53,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-10-08 16:43:53,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884601791] [2021-10-08 16:43:53,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-08 16:43:53,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:43:53,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-08 16:43:53,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=196, Unknown=1, NotChecked=0, Total=240 [2021-10-08 16:43:53,166 INFO L87 Difference]: Start difference. First operand 29434 states and 178256 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) [2021-10-08 16:43:59,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:43:59,116 INFO L93 Difference]: Finished difference Result 39992 states and 227664 transitions. [2021-10-08 16:43:59,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-08 16:43:59,117 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 [2021-10-08 16:43:59,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:43:59,619 INFO L225 Difference]: With dead ends: 39992 [2021-10-08 16:43:59,619 INFO L226 Difference]: Without dead ends: 39950 [2021-10-08 16:43:59,620 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 3364.9ms TimeCoverageRelationStatistics Valid=118, Invalid=531, Unknown=1, NotChecked=0, Total=650 [2021-10-08 16:43:59,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39950 states. [2021-10-08 16:44:01,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39950 to 29478. [2021-10-08 16:44:01,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29478 states, 29477 states have (on average 6.059537944838349) internal successors, (178617), 29477 states have internal predecessors, (178617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:44:01,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29478 states to 29478 states and 178617 transitions. [2021-10-08 16:44:01,442 INFO L78 Accepts]: Start accepts. Automaton has 29478 states and 178617 transitions. Word has length 26 [2021-10-08 16:44:01,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:44:01,442 INFO L470 AbstractCegarLoop]: Abstraction has 29478 states and 178617 transitions. [2021-10-08 16:44:01,443 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) [2021-10-08 16:44:01,443 INFO L276 IsEmpty]: Start isEmpty. Operand 29478 states and 178617 transitions. [2021-10-08 16:44:02,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-08 16:44:02,030 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:44:02,030 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] [2021-10-08 16:44:02,051 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (84)] Ended with exit code 0 [2021-10-08 16:44:02,244 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 [2021-10-08 16:44:02,244 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)] === [2021-10-08 16:44:02,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:44:02,245 INFO L82 PathProgramCache]: Analyzing trace with hash 221487868, now seen corresponding path program 24 times [2021-10-08 16:44:02,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:44:02,246 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [336885934] [2021-10-08 16:44:02,246 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:44:02,246 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:44:02,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:44:02,253 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) [2021-10-08 16:44:02,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (85)] Waiting until timeout for monitored process [2021-10-08 16:44:03,983 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-08 16:44:03,983 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:44:03,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-08 16:44:03,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:44:06,314 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:44:06,314 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:44:06,674 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:44:06,675 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:44:06,675 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [336885934] [2021-10-08 16:44:06,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [336885934] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:44:06,675 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:44:06,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-08 16:44:06,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237895068] [2021-10-08 16:44:06,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 16:44:06,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:44:06,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 16:44:06,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=142, Unknown=1, NotChecked=0, Total=182 [2021-10-08 16:44:06,677 INFO L87 Difference]: Start difference. First operand 29478 states and 178617 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) [2021-10-08 16:44:27,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:44:27,072 INFO L93 Difference]: Finished difference Result 34628 states and 200248 transitions. [2021-10-08 16:44:27,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-08 16:44:27,072 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 [2021-10-08 16:44:27,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:44:27,267 INFO L225 Difference]: With dead ends: 34628 [2021-10-08 16:44:27,268 INFO L226 Difference]: Without dead ends: 34434 [2021-10-08 16:44:27,268 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 12802.0ms TimeCoverageRelationStatistics Valid=119, Invalid=385, Unknown=2, NotChecked=0, Total=506 [2021-10-08 16:44:27,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34434 states. [2021-10-08 16:44:28,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34434 to 29654. [2021-10-08 16:44:28,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29654 states, 29653 states have (on average 6.0845445654739825) internal successors, (180425), 29653 states have internal predecessors, (180425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:44:28,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29654 states to 29654 states and 180425 transitions. [2021-10-08 16:44:28,979 INFO L78 Accepts]: Start accepts. Automaton has 29654 states and 180425 transitions. Word has length 26 [2021-10-08 16:44:28,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:44:28,979 INFO L470 AbstractCegarLoop]: Abstraction has 29654 states and 180425 transitions. [2021-10-08 16:44:28,980 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) [2021-10-08 16:44:28,980 INFO L276 IsEmpty]: Start isEmpty. Operand 29654 states and 180425 transitions. [2021-10-08 16:44:29,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-08 16:44:29,099 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:44:29,099 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] [2021-10-08 16:44:29,114 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (85)] Forceful destruction successful, exit code 0 [2021-10-08 16:44:29,299 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 [2021-10-08 16:44:29,300 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)] === [2021-10-08 16:44:29,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:44:29,301 INFO L82 PathProgramCache]: Analyzing trace with hash -320424412, now seen corresponding path program 25 times [2021-10-08 16:44:29,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:44:29,303 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2062599244] [2021-10-08 16:44:29,303 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 16:44:29,303 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:44:29,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:44:29,305 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) [2021-10-08 16:44:29,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (86)] Waiting until timeout for monitored process [2021-10-08 16:44:30,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:44:30,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-08 16:44:30,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:44:31,457 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:44:31,457 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:44:32,094 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:44:32,095 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:44:32,095 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2062599244] [2021-10-08 16:44:32,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2062599244] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:44:32,095 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:44:32,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-08 16:44:32,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476656473] [2021-10-08 16:44:32,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 16:44:32,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:44:32,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 16:44:32,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-10-08 16:44:32,097 INFO L87 Difference]: Start difference. First operand 29654 states and 180425 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) [2021-10-08 16:44:39,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:44:39,229 INFO L93 Difference]: Finished difference Result 36252 states and 214752 transitions. [2021-10-08 16:44:39,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-08 16:44:39,230 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 [2021-10-08 16:44:39,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:44:39,481 INFO L225 Difference]: With dead ends: 36252 [2021-10-08 16:44:39,481 INFO L226 Difference]: Without dead ends: 36024 [2021-10-08 16:44:39,481 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 1510.5ms TimeCoverageRelationStatistics Valid=162, Invalid=488, Unknown=0, NotChecked=0, Total=650 [2021-10-08 16:44:39,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36024 states. [2021-10-08 16:44:40,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36024 to 31392. [2021-10-08 16:44:40,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31392 states, 31391 states have (on average 6.113695008123347) internal successors, (191915), 31391 states have internal predecessors, (191915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:44:41,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31392 states to 31392 states and 191915 transitions. [2021-10-08 16:44:41,389 INFO L78 Accepts]: Start accepts. Automaton has 31392 states and 191915 transitions. Word has length 26 [2021-10-08 16:44:41,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:44:41,390 INFO L470 AbstractCegarLoop]: Abstraction has 31392 states and 191915 transitions. [2021-10-08 16:44:41,390 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) [2021-10-08 16:44:41,391 INFO L276 IsEmpty]: Start isEmpty. Operand 31392 states and 191915 transitions. [2021-10-08 16:44:41,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-08 16:44:41,531 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:44:41,531 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] [2021-10-08 16:44:41,546 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (86)] Forceful destruction successful, exit code 0 [2021-10-08 16:44:41,732 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 [2021-10-08 16:44:41,732 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)] === [2021-10-08 16:44:41,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:44:41,733 INFO L82 PathProgramCache]: Analyzing trace with hash -642047750, now seen corresponding path program 26 times [2021-10-08 16:44:41,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:44:41,734 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1742461462] [2021-10-08 16:44:41,734 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:44:41,734 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:44:41,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:44:41,735 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) [2021-10-08 16:44:41,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (87)] Waiting until timeout for monitored process [2021-10-08 16:44:43,420 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:44:43,420 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:44:43,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-08 16:44:43,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:44:45,740 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:44:45,741 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:44:46,734 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:44:46,734 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:44:46,735 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1742461462] [2021-10-08 16:44:46,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1742461462] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:44:46,735 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:44:46,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-10-08 16:44:46,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987252610] [2021-10-08 16:44:46,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-08 16:44:46,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:44:46,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-08 16:44:46,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=171, Unknown=1, NotChecked=0, Total=210 [2021-10-08 16:44:46,738 INFO L87 Difference]: Start difference. First operand 31392 states and 191915 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) [2021-10-08 16:44:50,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:44:50,898 INFO L93 Difference]: Finished difference Result 46460 states and 267177 transitions. [2021-10-08 16:44:50,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-08 16:44:50,899 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 [2021-10-08 16:44:50,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:44:51,243 INFO L225 Difference]: With dead ends: 46460 [2021-10-08 16:44:51,243 INFO L226 Difference]: Without dead ends: 46080 [2021-10-08 16:44:51,243 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 3653.8ms TimeCoverageRelationStatistics Valid=119, Invalid=530, Unknown=1, NotChecked=0, Total=650 [2021-10-08 16:44:51,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46080 states. [2021-10-08 16:44:52,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46080 to 34762. [2021-10-08 16:44:52,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34762 states, 34761 states have (on average 6.170104427375507) internal successors, (214479), 34761 states have internal predecessors, (214479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:44:53,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34762 states to 34762 states and 214479 transitions. [2021-10-08 16:44:53,211 INFO L78 Accepts]: Start accepts. Automaton has 34762 states and 214479 transitions. Word has length 26 [2021-10-08 16:44:53,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:44:53,212 INFO L470 AbstractCegarLoop]: Abstraction has 34762 states and 214479 transitions. [2021-10-08 16:44:53,212 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) [2021-10-08 16:44:53,212 INFO L276 IsEmpty]: Start isEmpty. Operand 34762 states and 214479 transitions. [2021-10-08 16:44:53,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-08 16:44:53,722 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:44:53,722 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] [2021-10-08 16:44:53,755 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (87)] Forceful destruction successful, exit code 0 [2021-10-08 16:44:53,936 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 [2021-10-08 16:44:53,937 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)] === [2021-10-08 16:44:53,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:44:53,937 INFO L82 PathProgramCache]: Analyzing trace with hash -1142996982, now seen corresponding path program 27 times [2021-10-08 16:44:53,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:44:53,938 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [141625412] [2021-10-08 16:44:53,938 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:44:53,938 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:44:53,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:44:53,940 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) [2021-10-08 16:44:53,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (88)] Waiting until timeout for monitored process [2021-10-08 16:44:55,514 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-08 16:44:55,514 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:44:55,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-08 16:44:55,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:44:55,840 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:44:55,840 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:44:56,440 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:44:56,440 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:44:56,440 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [141625412] [2021-10-08 16:44:56,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [141625412] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:44:56,440 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:44:56,440 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-10-08 16:44:56,440 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594794605] [2021-10-08 16:44:56,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-08 16:44:56,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:44:56,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-08 16:44:56,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-10-08 16:44:56,441 INFO L87 Difference]: Start difference. First operand 34762 states and 214479 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) [2021-10-08 16:45:07,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:45:07,240 INFO L93 Difference]: Finished difference Result 45720 states and 268939 transitions. [2021-10-08 16:45:07,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-08 16:45:07,241 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 [2021-10-08 16:45:07,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:45:07,908 INFO L225 Difference]: With dead ends: 45720 [2021-10-08 16:45:07,909 INFO L226 Difference]: Without dead ends: 45678 [2021-10-08 16:45:07,909 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 3546.0ms TimeCoverageRelationStatistics Valid=135, Invalid=795, Unknown=0, NotChecked=0, Total=930 [2021-10-08 16:45:07,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45678 states. [2021-10-08 16:45:09,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45678 to 36916. [2021-10-08 16:45:09,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36916 states, 36915 states have (on average 6.186861709332249) internal successors, (228388), 36915 states have internal predecessors, (228388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:45:10,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36916 states to 36916 states and 228388 transitions. [2021-10-08 16:45:10,362 INFO L78 Accepts]: Start accepts. Automaton has 36916 states and 228388 transitions. Word has length 26 [2021-10-08 16:45:10,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:45:10,362 INFO L470 AbstractCegarLoop]: Abstraction has 36916 states and 228388 transitions. [2021-10-08 16:45:10,362 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) [2021-10-08 16:45:10,362 INFO L276 IsEmpty]: Start isEmpty. Operand 36916 states and 228388 transitions. [2021-10-08 16:45:10,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-08 16:45:10,508 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:45:10,508 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] [2021-10-08 16:45:10,525 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (88)] Forceful destruction successful, exit code 0 [2021-10-08 16:45:10,709 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 [2021-10-08 16:45:10,709 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)] === [2021-10-08 16:45:10,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:45:10,710 INFO L82 PathProgramCache]: Analyzing trace with hash 1195472074, now seen corresponding path program 28 times [2021-10-08 16:45:10,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:45:10,711 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [710309854] [2021-10-08 16:45:10,711 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:45:10,711 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:45:10,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:45:10,712 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) [2021-10-08 16:45:10,713 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (89)] Waiting until timeout for monitored process [2021-10-08 16:45:12,579 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:45:12,579 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:45:12,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-08 16:45:12,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:45:14,866 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:45:14,866 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:45:15,216 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:45:15,216 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:45:15,216 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [710309854] [2021-10-08 16:45:15,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [710309854] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:45:15,216 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:45:15,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-08 16:45:15,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94978156] [2021-10-08 16:45:15,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 16:45:15,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:45:15,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 16:45:15,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=144, Unknown=1, NotChecked=0, Total=182 [2021-10-08 16:45:15,217 INFO L87 Difference]: Start difference. First operand 36916 states and 228388 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) [2021-10-08 16:45:22,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:45:22,771 INFO L93 Difference]: Finished difference Result 47022 states and 274127 transitions. [2021-10-08 16:45:22,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-08 16:45:22,772 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 [2021-10-08 16:45:22,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:45:23,097 INFO L225 Difference]: With dead ends: 47022 [2021-10-08 16:45:23,097 INFO L226 Difference]: Without dead ends: 47022 [2021-10-08 16:45:23,098 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 6843.1ms TimeCoverageRelationStatistics Valid=105, Invalid=445, Unknown=2, NotChecked=0, Total=552 [2021-10-08 16:45:23,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47022 states. [2021-10-08 16:45:24,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47022 to 36130. [2021-10-08 16:45:24,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36130 states, 36129 states have (on average 6.171828724847075) internal successors, (222982), 36129 states have internal predecessors, (222982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:45:25,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36130 states to 36130 states and 222982 transitions. [2021-10-08 16:45:25,534 INFO L78 Accepts]: Start accepts. Automaton has 36130 states and 222982 transitions. Word has length 26 [2021-10-08 16:45:25,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:45:25,534 INFO L470 AbstractCegarLoop]: Abstraction has 36130 states and 222982 transitions. [2021-10-08 16:45:25,535 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) [2021-10-08 16:45:25,535 INFO L276 IsEmpty]: Start isEmpty. Operand 36130 states and 222982 transitions. [2021-10-08 16:45:25,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-08 16:45:25,721 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:45:25,722 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] [2021-10-08 16:45:25,738 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (89)] Forceful destruction successful, exit code 0 [2021-10-08 16:45:25,922 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 [2021-10-08 16:45:25,922 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)] === [2021-10-08 16:45:25,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:45:25,923 INFO L82 PathProgramCache]: Analyzing trace with hash 1620502940, now seen corresponding path program 29 times [2021-10-08 16:45:25,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:45:25,924 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [233443586] [2021-10-08 16:45:25,924 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:45:25,925 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:45:25,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:45:25,926 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) [2021-10-08 16:45:25,927 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (90)] Waiting until timeout for monitored process [2021-10-08 16:45:27,489 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-08 16:45:27,489 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:45:27,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-08 16:45:27,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:45:29,798 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:45:29,798 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:45:30,378 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:45:30,378 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:45:30,378 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [233443586] [2021-10-08 16:45:30,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [233443586] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:45:30,378 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:45:30,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-10-08 16:45:30,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493555998] [2021-10-08 16:45:30,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-08 16:45:30,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:45:30,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-08 16:45:30,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=168, Unknown=1, NotChecked=0, Total=210 [2021-10-08 16:45:30,379 INFO L87 Difference]: Start difference. First operand 36130 states and 222982 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) [2021-10-08 16:45:43,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:45:43,832 INFO L93 Difference]: Finished difference Result 44130 states and 259875 transitions. [2021-10-08 16:45:43,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-08 16:45:43,833 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 [2021-10-08 16:45:43,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:45:44,509 INFO L225 Difference]: With dead ends: 44130 [2021-10-08 16:45:44,509 INFO L226 Difference]: Without dead ends: 44014 [2021-10-08 16:45:44,509 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 9326.2ms TimeCoverageRelationStatistics Valid=135, Invalid=565, Unknown=2, NotChecked=0, Total=702 [2021-10-08 16:45:44,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44014 states. [2021-10-08 16:45:46,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44014 to 35930. [2021-10-08 16:45:46,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35930 states, 35929 states have (on average 6.137576887750842) internal successors, (220517), 35929 states have internal predecessors, (220517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:45:46,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35930 states to 35930 states and 220517 transitions. [2021-10-08 16:45:46,815 INFO L78 Accepts]: Start accepts. Automaton has 35930 states and 220517 transitions. Word has length 26 [2021-10-08 16:45:46,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:45:46,815 INFO L470 AbstractCegarLoop]: Abstraction has 35930 states and 220517 transitions. [2021-10-08 16:45:46,815 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) [2021-10-08 16:45:46,815 INFO L276 IsEmpty]: Start isEmpty. Operand 35930 states and 220517 transitions. [2021-10-08 16:45:46,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-08 16:45:46,990 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:45:46,990 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] [2021-10-08 16:45:47,011 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (90)] Forceful destruction successful, exit code 0 [2021-10-08 16:45:47,204 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 [2021-10-08 16:45:47,204 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)] === [2021-10-08 16:45:47,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:45:47,205 INFO L82 PathProgramCache]: Analyzing trace with hash -871680918, now seen corresponding path program 30 times [2021-10-08 16:45:47,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:45:47,205 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1865000309] [2021-10-08 16:45:47,205 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:45:47,206 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:45:47,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:45:47,213 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) [2021-10-08 16:45:47,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (91)] Waiting until timeout for monitored process [2021-10-08 16:45:48,858 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-08 16:45:48,858 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:45:48,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-08 16:45:48,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:45:49,208 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:45:49,208 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:45:50,690 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:45:50,690 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:45:50,691 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1865000309] [2021-10-08 16:45:50,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1865000309] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:45:50,691 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:45:50,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-10-08 16:45:50,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454829814] [2021-10-08 16:45:50,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-08 16:45:50,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:45:50,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-08 16:45:50,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2021-10-08 16:45:50,692 INFO L87 Difference]: Start difference. First operand 35930 states and 220517 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) [2021-10-08 16:46:05,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:46:05,372 INFO L93 Difference]: Finished difference Result 45684 states and 268917 transitions. [2021-10-08 16:46:05,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-08 16:46:05,373 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 [2021-10-08 16:46:05,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:46:05,713 INFO L225 Difference]: With dead ends: 45684 [2021-10-08 16:46:05,713 INFO L226 Difference]: Without dead ends: 45648 [2021-10-08 16:46:05,714 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 5276.9ms TimeCoverageRelationStatistics Valid=272, Invalid=918, Unknown=0, NotChecked=0, Total=1190 [2021-10-08 16:46:05,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45648 states. [2021-10-08 16:46:07,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45648 to 37558. [2021-10-08 16:46:07,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37558 states, 37557 states have (on average 6.167292382245654) internal successors, (231625), 37557 states have internal predecessors, (231625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:46:07,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37558 states to 37558 states and 231625 transitions. [2021-10-08 16:46:07,919 INFO L78 Accepts]: Start accepts. Automaton has 37558 states and 231625 transitions. Word has length 26 [2021-10-08 16:46:07,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:46:07,919 INFO L470 AbstractCegarLoop]: Abstraction has 37558 states and 231625 transitions. [2021-10-08 16:46:07,919 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) [2021-10-08 16:46:07,919 INFO L276 IsEmpty]: Start isEmpty. Operand 37558 states and 231625 transitions. [2021-10-08 16:46:08,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-08 16:46:08,054 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:46:08,054 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] [2021-10-08 16:46:08,070 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (91)] Ended with exit code 0 [2021-10-08 16:46:08,261 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 [2021-10-08 16:46:08,262 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)] === [2021-10-08 16:46:08,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:46:08,262 INFO L82 PathProgramCache]: Analyzing trace with hash 1763704100, now seen corresponding path program 31 times [2021-10-08 16:46:08,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:46:08,263 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [541811134] [2021-10-08 16:46:08,263 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 16:46:08,263 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:46:08,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:46:08,264 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) [2021-10-08 16:46:08,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (92)] Waiting until timeout for monitored process [2021-10-08 16:46:10,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:46:10,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-08 16:46:10,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:46:10,762 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:46:10,762 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:46:11,415 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:46:11,415 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:46:11,415 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [541811134] [2021-10-08 16:46:11,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [541811134] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:46:11,415 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:46:11,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-08 16:46:11,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051607526] [2021-10-08 16:46:11,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 16:46:11,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:46:11,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 16:46:11,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-10-08 16:46:11,417 INFO L87 Difference]: Start difference. First operand 37558 states and 231625 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) [2021-10-08 16:46:16,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:46:16,131 INFO L93 Difference]: Finished difference Result 48686 states and 293313 transitions. [2021-10-08 16:46:16,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-08 16:46:16,132 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 [2021-10-08 16:46:16,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:46:16,444 INFO L225 Difference]: With dead ends: 48686 [2021-10-08 16:46:16,444 INFO L226 Difference]: Without dead ends: 48446 [2021-10-08 16:46:16,444 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 1546.3ms TimeCoverageRelationStatistics Valid=176, Invalid=694, Unknown=0, NotChecked=0, Total=870 [2021-10-08 16:46:16,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48446 states. [2021-10-08 16:46:18,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48446 to 41756. [2021-10-08 16:46:18,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41756 states, 41755 states have (on average 6.199856304634175) internal successors, (258875), 41755 states have internal predecessors, (258875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:46:19,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41756 states to 41756 states and 258875 transitions. [2021-10-08 16:46:19,059 INFO L78 Accepts]: Start accepts. Automaton has 41756 states and 258875 transitions. Word has length 26 [2021-10-08 16:46:19,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:46:19,059 INFO L470 AbstractCegarLoop]: Abstraction has 41756 states and 258875 transitions. [2021-10-08 16:46:19,060 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) [2021-10-08 16:46:19,060 INFO L276 IsEmpty]: Start isEmpty. Operand 41756 states and 258875 transitions. [2021-10-08 16:46:19,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-08 16:46:19,274 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:46:19,274 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] [2021-10-08 16:46:19,292 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (92)] Forceful destruction successful, exit code 0 [2021-10-08 16:46:19,475 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 [2021-10-08 16:46:19,476 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)] === [2021-10-08 16:46:19,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:46:19,477 INFO L82 PathProgramCache]: Analyzing trace with hash -108096678, now seen corresponding path program 32 times [2021-10-08 16:46:19,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:46:19,477 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1428483893] [2021-10-08 16:46:19,477 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:46:19,478 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:46:19,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:46:19,479 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) [2021-10-08 16:46:19,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (93)] Waiting until timeout for monitored process [2021-10-08 16:46:21,032 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:46:21,032 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:46:21,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-08 16:46:21,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:46:21,392 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:46:21,392 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:46:22,896 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:46:22,896 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:46:22,896 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1428483893] [2021-10-08 16:46:22,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1428483893] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:46:22,897 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:46:22,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-10-08 16:46:22,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999192824] [2021-10-08 16:46:22,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-08 16:46:22,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:46:22,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-08 16:46:22,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2021-10-08 16:46:22,899 INFO L87 Difference]: Start difference. First operand 41756 states and 258875 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) [2021-10-08 16:46:38,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:46:38,492 INFO L93 Difference]: Finished difference Result 64468 states and 367196 transitions. [2021-10-08 16:46:38,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-08 16:46:38,493 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 [2021-10-08 16:46:38,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:46:39,313 INFO L225 Difference]: With dead ends: 64468 [2021-10-08 16:46:39,313 INFO L226 Difference]: Without dead ends: 64456 [2021-10-08 16:46:39,314 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 5555.6ms TimeCoverageRelationStatistics Valid=371, Invalid=1351, Unknown=0, NotChecked=0, Total=1722 [2021-10-08 16:46:39,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64456 states. [2021-10-08 16:46:41,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64456 to 43608. [2021-10-08 16:46:41,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43608 states, 43607 states have (on average 6.222877061022313) internal successors, (271361), 43607 states have internal predecessors, (271361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:46:42,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43608 states to 43608 states and 271361 transitions. [2021-10-08 16:46:42,571 INFO L78 Accepts]: Start accepts. Automaton has 43608 states and 271361 transitions. Word has length 26 [2021-10-08 16:46:42,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:46:42,571 INFO L470 AbstractCegarLoop]: Abstraction has 43608 states and 271361 transitions. [2021-10-08 16:46:42,572 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) [2021-10-08 16:46:42,572 INFO L276 IsEmpty]: Start isEmpty. Operand 43608 states and 271361 transitions. [2021-10-08 16:46:42,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-08 16:46:42,816 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:46:42,816 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] [2021-10-08 16:46:42,834 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (93)] Forceful destruction successful, exit code 0 [2021-10-08 16:46:43,016 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 [2021-10-08 16:46:43,017 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)] === [2021-10-08 16:46:43,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:46:43,018 INFO L82 PathProgramCache]: Analyzing trace with hash 300692202, now seen corresponding path program 33 times [2021-10-08 16:46:43,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:46:43,019 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [661928486] [2021-10-08 16:46:43,019 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:46:43,019 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:46:43,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:46:43,021 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) [2021-10-08 16:46:43,022 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (94)] Waiting until timeout for monitored process [2021-10-08 16:46:44,932 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-08 16:46:44,932 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:46:44,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-08 16:46:44,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:46:45,280 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:46:45,280 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:46:45,621 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:46:45,622 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:46:45,622 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [661928486] [2021-10-08 16:46:45,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [661928486] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:46:45,622 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:46:45,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-08 16:46:45,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203906414] [2021-10-08 16:46:45,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 16:46:45,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:46:45,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 16:46:45,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-08 16:46:45,623 INFO L87 Difference]: Start difference. First operand 43608 states and 271361 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) [2021-10-08 16:47:04,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:47:04,951 INFO L93 Difference]: Finished difference Result 47948 states and 288407 transitions. [2021-10-08 16:47:04,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-08 16:47:04,952 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 [2021-10-08 16:47:04,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:47:05,646 INFO L225 Difference]: With dead ends: 47948 [2021-10-08 16:47:05,646 INFO L226 Difference]: Without dead ends: 47900 [2021-10-08 16:47:05,646 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 701.1ms TimeCoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420 [2021-10-08 16:47:05,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47900 states. [2021-10-08 16:47:07,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47900 to 42660. [2021-10-08 16:47:08,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42660 states, 42659 states have (on average 6.256592981551372) internal successors, (266900), 42659 states have internal predecessors, (266900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:47:08,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42660 states to 42660 states and 266900 transitions. [2021-10-08 16:47:08,836 INFO L78 Accepts]: Start accepts. Automaton has 42660 states and 266900 transitions. Word has length 26 [2021-10-08 16:47:08,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:47:08,839 INFO L470 AbstractCegarLoop]: Abstraction has 42660 states and 266900 transitions. [2021-10-08 16:47:08,839 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) [2021-10-08 16:47:08,839 INFO L276 IsEmpty]: Start isEmpty. Operand 42660 states and 266900 transitions. [2021-10-08 16:47:09,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-08 16:47:09,211 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:47:09,211 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] [2021-10-08 16:47:09,233 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (94)] Forceful destruction successful, exit code 0 [2021-10-08 16:47:09,426 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 [2021-10-08 16:47:09,426 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)] === [2021-10-08 16:47:09,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:47:09,427 INFO L82 PathProgramCache]: Analyzing trace with hash 509997612, now seen corresponding path program 28 times [2021-10-08 16:47:09,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:47:09,427 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [756576184] [2021-10-08 16:47:09,428 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:47:09,428 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:47:09,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:47:09,429 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) [2021-10-08 16:47:09,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (95)] Waiting until timeout for monitored process [2021-10-08 16:47:11,070 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:47:11,070 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:47:11,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-08 16:47:11,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:47:11,629 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:47:11,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:47:11,959 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:47:11,959 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:47:11,959 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [756576184] [2021-10-08 16:47:11,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [756576184] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:47:11,960 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:47:11,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-08 16:47:11,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399329607] [2021-10-08 16:47:11,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 16:47:11,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:47:11,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 16:47:11,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-08 16:47:11,961 INFO L87 Difference]: Start difference. First operand 42660 states and 266900 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) [2021-10-08 16:47:20,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:47:20,532 INFO L93 Difference]: Finished difference Result 79642 states and 457117 transitions. [2021-10-08 16:47:20,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-08 16:47:20,533 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 [2021-10-08 16:47:20,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:47:21,554 INFO L225 Difference]: With dead ends: 79642 [2021-10-08 16:47:21,554 INFO L226 Difference]: Without dead ends: 79642 [2021-10-08 16:47:21,554 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 817.3ms TimeCoverageRelationStatistics Valid=83, Invalid=379, Unknown=0, NotChecked=0, Total=462 [2021-10-08 16:47:21,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79642 states. [2021-10-08 16:47:24,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79642 to 45468. [2021-10-08 16:47:24,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45468 states, 45467 states have (on average 6.322013768227506) internal successors, (287443), 45467 states have internal predecessors, (287443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:47:24,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45468 states to 45468 states and 287443 transitions. [2021-10-08 16:47:24,969 INFO L78 Accepts]: Start accepts. Automaton has 45468 states and 287443 transitions. Word has length 26 [2021-10-08 16:47:24,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:47:24,969 INFO L470 AbstractCegarLoop]: Abstraction has 45468 states and 287443 transitions. [2021-10-08 16:47:24,969 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) [2021-10-08 16:47:24,969 INFO L276 IsEmpty]: Start isEmpty. Operand 45468 states and 287443 transitions. [2021-10-08 16:47:25,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-08 16:47:25,177 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:47:25,177 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] [2021-10-08 16:47:25,193 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (95)] Forceful destruction successful, exit code 0 [2021-10-08 16:47:25,377 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 [2021-10-08 16:47:25,378 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)] === [2021-10-08 16:47:25,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:47:25,379 INFO L82 PathProgramCache]: Analyzing trace with hash 1986467499, now seen corresponding path program 29 times [2021-10-08 16:47:25,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:47:25,379 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [724881956] [2021-10-08 16:47:25,380 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:47:25,380 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:47:25,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:47:25,381 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) [2021-10-08 16:47:25,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (96)] Waiting until timeout for monitored process [2021-10-08 16:47:26,996 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-08 16:47:26,996 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:47:27,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-08 16:47:27,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:47:27,244 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:47:27,245 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:47:28,009 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:47:28,010 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:47:28,010 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [724881956] [2021-10-08 16:47:28,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [724881956] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:47:28,010 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:47:28,010 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-10-08 16:47:28,010 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705826790] [2021-10-08 16:47:28,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-08 16:47:28,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:47:28,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-08 16:47:28,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-10-08 16:47:28,011 INFO L87 Difference]: Start difference. First operand 45468 states and 287443 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) [2021-10-08 16:47:34,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:47:34,592 INFO L93 Difference]: Finished difference Result 72248 states and 417703 transitions. [2021-10-08 16:47:34,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-08 16:47:34,593 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 [2021-10-08 16:47:34,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:47:35,473 INFO L225 Difference]: With dead ends: 72248 [2021-10-08 16:47:35,473 INFO L226 Difference]: Without dead ends: 72220 [2021-10-08 16:47:35,477 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 3674.3ms TimeCoverageRelationStatistics Valid=135, Invalid=795, Unknown=0, NotChecked=0, Total=930 [2021-10-08 16:47:35,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72220 states. [2021-10-08 16:47:37,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72220 to 46238. [2021-10-08 16:47:38,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46238 states, 46237 states have (on average 6.315158855462076) internal successors, (291994), 46237 states have internal predecessors, (291994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:47:38,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46238 states to 46238 states and 291994 transitions. [2021-10-08 16:47:38,529 INFO L78 Accepts]: Start accepts. Automaton has 46238 states and 291994 transitions. Word has length 26 [2021-10-08 16:47:38,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:47:38,529 INFO L470 AbstractCegarLoop]: Abstraction has 46238 states and 291994 transitions. [2021-10-08 16:47:38,529 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) [2021-10-08 16:47:38,529 INFO L276 IsEmpty]: Start isEmpty. Operand 46238 states and 291994 transitions. [2021-10-08 16:47:38,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-08 16:47:38,717 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:47:38,717 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] [2021-10-08 16:47:38,735 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (96)] Forceful destruction successful, exit code 0 [2021-10-08 16:47:38,918 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 [2021-10-08 16:47:38,918 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)] === [2021-10-08 16:47:38,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:47:38,919 INFO L82 PathProgramCache]: Analyzing trace with hash -765008981, now seen corresponding path program 30 times [2021-10-08 16:47:38,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:47:38,920 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1209593009] [2021-10-08 16:47:38,920 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:47:38,920 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:47:38,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:47:38,921 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) [2021-10-08 16:47:38,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (97)] Waiting until timeout for monitored process [2021-10-08 16:47:41,228 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-08 16:47:41,228 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:47:41,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-08 16:47:41,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:47:43,488 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:47:43,488 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:47:43,807 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:47:43,808 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:47:43,808 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1209593009] [2021-10-08 16:47:43,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1209593009] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:47:43,808 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:47:43,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-08 16:47:43,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235638603] [2021-10-08 16:47:43,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 16:47:43,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:47:43,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 16:47:43,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=144, Unknown=1, NotChecked=0, Total=182 [2021-10-08 16:47:43,810 INFO L87 Difference]: Start difference. First operand 46238 states and 291994 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) [2021-10-08 16:47:53,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:47:53,762 INFO L93 Difference]: Finished difference Result 77766 states and 444524 transitions. [2021-10-08 16:47:53,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-08 16:47:53,763 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 [2021-10-08 16:47:53,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:47:54,808 INFO L225 Difference]: With dead ends: 77766 [2021-10-08 16:47:54,808 INFO L226 Difference]: Without dead ends: 77766 [2021-10-08 16:47:54,808 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 6865.4ms TimeCoverageRelationStatistics Valid=105, Invalid=445, Unknown=2, NotChecked=0, Total=552 [2021-10-08 16:47:54,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77766 states. [2021-10-08 16:47:57,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77766 to 46640. [2021-10-08 16:47:57,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46640 states, 46639 states have (on average 6.317588284482944) internal successors, (294646), 46639 states have internal predecessors, (294646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:47:58,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46640 states to 46640 states and 294646 transitions. [2021-10-08 16:47:58,787 INFO L78 Accepts]: Start accepts. Automaton has 46640 states and 294646 transitions. Word has length 26 [2021-10-08 16:47:58,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:47:58,787 INFO L470 AbstractCegarLoop]: Abstraction has 46640 states and 294646 transitions. [2021-10-08 16:47:58,787 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) [2021-10-08 16:47:58,788 INFO L276 IsEmpty]: Start isEmpty. Operand 46640 states and 294646 transitions. [2021-10-08 16:47:59,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-08 16:47:59,063 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:47:59,063 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] [2021-10-08 16:47:59,087 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (97)] Forceful destruction successful, exit code 0 [2021-10-08 16:47:59,279 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 [2021-10-08 16:47:59,280 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)] === [2021-10-08 16:47:59,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:47:59,280 INFO L82 PathProgramCache]: Analyzing trace with hash 2131821726, now seen corresponding path program 31 times [2021-10-08 16:47:59,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:47:59,281 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2042466971] [2021-10-08 16:47:59,281 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 16:47:59,282 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:47:59,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:47:59,283 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) [2021-10-08 16:47:59,284 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (98)] Waiting until timeout for monitored process [2021-10-08 16:48:00,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:48:00,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-08 16:48:00,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:48:03,118 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:48:03,118 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:48:03,417 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:48:03,417 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:48:03,417 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2042466971] [2021-10-08 16:48:03,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2042466971] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:48:03,418 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:48:03,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-08 16:48:03,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627856254] [2021-10-08 16:48:03,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 16:48:03,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:48:03,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 16:48:03,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=142, Unknown=1, NotChecked=0, Total=182 [2021-10-08 16:48:03,419 INFO L87 Difference]: Start difference. First operand 46640 states and 294646 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) [2021-10-08 16:48:15,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:48:15,292 INFO L93 Difference]: Finished difference Result 66766 states and 388991 transitions. [2021-10-08 16:48:15,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-08 16:48:15,293 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 [2021-10-08 16:48:15,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:48:16,216 INFO L225 Difference]: With dead ends: 66766 [2021-10-08 16:48:16,216 INFO L226 Difference]: Without dead ends: 66648 [2021-10-08 16:48:16,216 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 10720.0ms TimeCoverageRelationStatistics Valid=110, Invalid=350, Unknown=2, NotChecked=0, Total=462 [2021-10-08 16:48:16,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66648 states. Received shutdown request... [2021-10-08 16:48:17,239 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK [2021-10-08 16:48:17,257 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (98)] Forceful destruction successful, exit code 0 [2021-10-08 16:48:17,287 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 [2021-10-08 16:48:17,287 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 [2021-10-08 16:48:17,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 98 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:48:17,441 WARN L594 AbstractCegarLoop]: Verification canceled: while executing MinimizeSevpa. [2021-10-08 16:48:17,443 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-08 16:48:17,444 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-08 16:48:17,444 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-08 16:48:17,444 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-08 16:48:17,444 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-08 16:48:17,444 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-08 16:48:17,444 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-08 16:48:17,445 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-08 16:48:17,445 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-08 16:48:17,445 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-08 16:48:17,445 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr10REQUIRES_VIOLATION [2021-10-08 16:48:17,445 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr11REQUIRES_VIOLATION [2021-10-08 16:48:17,445 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr12REQUIRES_VIOLATION [2021-10-08 16:48:17,445 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr13REQUIRES_VIOLATION [2021-10-08 16:48:17,445 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr14REQUIRES_VIOLATION [2021-10-08 16:48:17,446 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr15REQUIRES_VIOLATION [2021-10-08 16:48:17,446 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK [2021-10-08 16:48:17,446 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-08 16:48:17,446 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-08 16:48:17,446 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-08 16:48:17,446 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3INUSE_VIOLATION [2021-10-08 16:48:17,452 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-08 16:48:17,453 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-08 16:48:17,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.10 04:48:17 BasicIcfg [2021-10-08 16:48:17,457 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-08 16:48:17,459 INFO L168 Benchmark]: Toolchain (without parser) took 776594.76 ms. Allocated memory was 159.4 MB in the beginning and 7.0 GB in the end (delta: 6.8 GB). Free memory was 134.4 MB in the beginning and 4.5 GB in the end (delta: -4.3 GB). Peak memory consumption was 2.7 GB. Max. memory is 8.0 GB. [2021-10-08 16:48:17,459 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 159.4 MB. Free memory is still 131.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-08 16:48:17,460 INFO L168 Benchmark]: CACSL2BoogieTranslator took 342.59 ms. Allocated memory is still 159.4 MB. Free memory was 134.0 MB in the beginning and 123.1 MB in the end (delta: 11.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-10-08 16:48:17,460 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.01 ms. Allocated memory is still 159.4 MB. Free memory was 123.1 MB in the beginning and 121.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-08 16:48:17,461 INFO L168 Benchmark]: Boogie Preprocessor took 39.70 ms. Allocated memory is still 159.4 MB. Free memory was 121.4 MB in the beginning and 119.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-08 16:48:17,461 INFO L168 Benchmark]: RCFGBuilder took 751.11 ms. Allocated memory is still 159.4 MB. Free memory was 119.9 MB in the beginning and 136.3 MB in the end (delta: -16.5 MB). Peak memory consumption was 15.5 MB. Max. memory is 8.0 GB. [2021-10-08 16:48:17,461 INFO L168 Benchmark]: TraceAbstraction took 775395.52 ms. Allocated memory was 159.4 MB in the beginning and 7.0 GB in the end (delta: 6.8 GB). Free memory was 135.8 MB in the beginning and 4.5 GB in the end (delta: -4.3 GB). Peak memory consumption was 2.7 GB. Max. memory is 8.0 GB. [2021-10-08 16:48:17,463 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 159.4 MB. Free memory is still 131.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 342.59 ms. Allocated memory is still 159.4 MB. Free memory was 134.0 MB in the beginning and 123.1 MB in the end (delta: 11.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 51.01 ms. Allocated memory is still 159.4 MB. Free memory was 123.1 MB in the beginning and 121.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 39.70 ms. Allocated memory is still 159.4 MB. Free memory was 121.4 MB in the beginning and 119.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 751.11 ms. Allocated memory is still 159.4 MB. Free memory was 119.9 MB in the beginning and 136.3 MB in the end (delta: -16.5 MB). Peak memory consumption was 15.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 775395.52 ms. Allocated memory was 159.4 MB in the beginning and 7.0 GB in the end (delta: 6.8 GB). Free memory was 135.8 MB in the beginning and 4.5 GB in the end (delta: -4.3 GB). Peak memory consumption was 2.7 GB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 23207.5ms, 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 MinimizeSevpa. - TimeoutResultAtElement [Line: 86]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 86]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 87]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 87]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 88]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 88]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 89]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 89]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 90]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 90]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 91]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 91]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 92]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 92]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 93]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 93]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 73]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while executing MinimizeSevpa. - 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 MinimizeSevpa. - 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 MinimizeSevpa. - 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 MinimizeSevpa. - 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 MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 160 locations, 22 error locations. Started 1 CEGAR loops. OverallTime: 775168.2ms, OverallIterations: 97, TraceHistogramMax: 3, EmptinessCheckTime: 8023.3ms, AutomataDifference: 460528.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 23311.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 7034 SDtfs, 19356 SDslu, 40955 SDs, 0 SdLazy, 35515 SolverSat, 1271 SolverUnsat, 59 SolverUnknown, 0 SolverNotchecked, 291774.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4853 GetRequests, 3373 SyntacticMatches, 2 SemanticMatches, 1478 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3824 ImplicationChecksByTransitivity, 177753.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=46640occurred in iteration=96, InterpolantAutomatonStates: 1430, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 72123.4ms AutomataMinimizationTime, 97 MinimizatonAttempts, 452377 StatesRemovedByMinimization, 86 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 889.9ms SsaConstructionTime, 13620.7ms SatisfiabilityAnalysisTime, 107283.5ms InterpolantComputationTime, 2237 NumberOfCodeBlocks, 2237 NumberOfCodeBlocksAsserted, 187 NumberOfCheckSat, 4280 ConstructedInterpolants, 553 QuantifiedInterpolants, 44476 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