/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/mult-dist.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-07 15:43:46,732 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-07 15:43:46,735 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-07 15:43:46,789 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-07 15:43:46,893 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-07 15:43:46,894 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-07 15:43:46,895 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-07 15:43:46,903 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-07 15:43:46,957 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-07 15:43:46,957 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-07 15:43:46,958 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-07 15:43:46,958 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-07 15:43:46,962 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-07 15:43:46,962 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-07 15:43:46,962 INFO L138 SettingsManager]: * Use SBE=true [2021-10-07 15:43:46,962 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-07 15:43:46,963 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-07 15:43:46,963 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-07 15:43:46,964 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-07 15:43:46,964 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-07 15:43:46,964 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-07 15:43:46,965 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-07 15:43:46,965 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-07 15:43:46,965 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-07 15:43:46,966 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-07 15:43:46,966 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-07 15:43:46,966 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-07 15:43:46,966 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-07 15:43:46,966 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-07 15:43:46,966 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-07 15:43:46,967 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-07 15:43:46,967 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-07 15:43:46,967 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-07 15:43:46,967 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-07 15:43:46,968 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-07 15:43:46,968 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-07 15:43:46,968 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-07 15:43:46,968 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-07 15:43:46,968 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-07 15:43:46,969 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-07 15:43:46,969 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-07 15:43:47,405 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-07 15:43:47,443 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-07 15:43:47,446 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-07 15:43:47,448 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-07 15:43:47,448 INFO L275 PluginConnector]: CDTParser initialized [2021-10-07 15:43:47,449 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/mult-dist.wvr.c [2021-10-07 15:43:47,525 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e2bf85b9a/b9a047f25c024a4a96ea2d02d17bc3a7/FLAG3c319ab55 [2021-10-07 15:43:48,115 INFO L306 CDTParser]: Found 1 translation units. [2021-10-07 15:43:48,116 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/mult-dist.wvr.c [2021-10-07 15:43:48,124 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e2bf85b9a/b9a047f25c024a4a96ea2d02d17bc3a7/FLAG3c319ab55 [2021-10-07 15:43:48,486 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e2bf85b9a/b9a047f25c024a4a96ea2d02d17bc3a7 [2021-10-07 15:43:48,491 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-07 15:43:48,500 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-07 15:43:48,505 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-07 15:43:48,505 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-07 15:43:48,509 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-07 15:43:48,510 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:43:48" (1/1) ... [2021-10-07 15:43:48,513 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d6a432a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:43:48, skipping insertion in model container [2021-10-07 15:43:48,513 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:43:48" (1/1) ... [2021-10-07 15:43:48,522 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-07 15:43:48,548 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-07 15:43:48,724 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/mult-dist.wvr.c[2116,2129] [2021-10-07 15:43:48,728 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 15:43:48,752 INFO L203 MainTranslator]: Completed pre-run [2021-10-07 15:43:48,810 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/mult-dist.wvr.c[2116,2129] [2021-10-07 15:43:48,812 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 15:43:48,835 INFO L208 MainTranslator]: Completed translation [2021-10-07 15:43:48,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:43:48 WrapperNode [2021-10-07 15:43:48,836 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-07 15:43:48,840 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-07 15:43:48,840 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-07 15:43:48,840 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-07 15:43:48,849 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:43:48" (1/1) ... [2021-10-07 15:43:48,875 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:43:48" (1/1) ... [2021-10-07 15:43:48,913 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-07 15:43:48,915 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-07 15:43:48,915 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-07 15:43:48,915 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-07 15:43:48,925 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:43:48" (1/1) ... [2021-10-07 15:43:48,925 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:43:48" (1/1) ... [2021-10-07 15:43:48,937 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:43:48" (1/1) ... [2021-10-07 15:43:48,937 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:43:48" (1/1) ... [2021-10-07 15:43:48,959 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:43:48" (1/1) ... [2021-10-07 15:43:48,969 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:43:48" (1/1) ... [2021-10-07 15:43:48,972 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:43:48" (1/1) ... [2021-10-07 15:43:48,977 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-07 15:43:48,982 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-07 15:43:48,982 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-07 15:43:48,982 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-07 15:43:48,985 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:43:48" (1/1) ... [2021-10-07 15:43:48,994 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-07 15:43:49,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:43:49,027 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-07 15:43:49,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-07 15:43:49,110 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-07 15:43:49,110 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-07 15:43:49,111 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-07 15:43:49,111 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-07 15:43:49,111 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-07 15:43:49,111 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-07 15:43:49,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-07 15:43:49,112 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-07 15:43:49,112 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-07 15:43:49,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-07 15:43:49,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-07 15:43:49,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-07 15:43:49,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-07 15:43:49,115 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-07 15:43:49,670 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-07 15:43:49,670 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-10-07 15:43:49,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:43:49 BoogieIcfgContainer [2021-10-07 15:43:49,673 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-07 15:43:49,676 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-07 15:43:49,676 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-07 15:43:49,681 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-07 15:43:49,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 03:43:48" (1/3) ... [2021-10-07 15:43:49,682 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@603a6db5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:43:49, skipping insertion in model container [2021-10-07 15:43:49,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:43:48" (2/3) ... [2021-10-07 15:43:49,683 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@603a6db5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:43:49, skipping insertion in model container [2021-10-07 15:43:49,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:43:49" (3/3) ... [2021-10-07 15:43:49,686 INFO L111 eAbstractionObserver]: Analyzing ICFG mult-dist.wvr.c [2021-10-07 15:43:49,723 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-07 15:43:49,723 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2021-10-07 15:43:49,724 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-07 15:43:49,811 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:43:49,811 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:43:49,812 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:43:49,812 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:43:49,812 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:43:49,813 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:43:49,813 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:43:49,813 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:43:49,813 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:43:49,814 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:43:49,814 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:43:49,815 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:43:49,815 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:43:49,815 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:43:49,816 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:43:49,816 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:43:49,816 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:43:49,816 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:43:49,817 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:43:49,817 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:43:49,818 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:43:49,818 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:43:49,818 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:43:49,819 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:43:49,819 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:43:49,819 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:43:49,820 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:43:49,820 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:43:49,820 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:43:49,820 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:43:49,821 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:43:49,821 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:43:49,822 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:43:49,822 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:43:49,822 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:43:49,822 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:43:49,823 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:43:49,823 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:43:49,823 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:43:49,824 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:43:49,824 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:43:49,825 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:43:49,825 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:43:49,825 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:43:49,826 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:43:49,826 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:43:49,826 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:43:49,827 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:43:49,827 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:43:49,827 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:43:49,828 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:43:49,828 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:43:49,828 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:43:49,828 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:43:49,829 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:43:49,829 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:43:49,829 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:43:49,829 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:43:49,830 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:43:49,830 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:43:49,834 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:43:49,834 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:43:49,834 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:43:49,835 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:43:49,840 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:43:49,840 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:43:49,841 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:43:49,841 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:43:49,843 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:43:49,844 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:43:49,844 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:43:49,844 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:43:49,852 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-10-07 15:43:49,918 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-07 15:43:49,926 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-07 15:43:49,926 INFO L340 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2021-10-07 15:43:49,945 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-07 15:43:49,958 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 120 places, 117 transitions, 258 flow [2021-10-07 15:43:49,962 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 120 places, 117 transitions, 258 flow [2021-10-07 15:43:49,964 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 120 places, 117 transitions, 258 flow [2021-10-07 15:43:50,025 INFO L129 PetriNetUnfolder]: 7/114 cut-off events. [2021-10-07 15:43:50,025 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-07 15:43:50,030 INFO L84 FinitePrefix]: Finished finitePrefix Result has 127 conditions, 114 events. 7/114 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 113 event pairs, 0 based on Foata normal form. 0/93 useless extension candidates. Maximal degree in co-relation 70. Up to 2 conditions per place. [2021-10-07 15:43:50,034 INFO L116 LiptonReduction]: Number of co-enabled transitions 1680 [2021-10-07 15:43:59,191 INFO L131 LiptonReduction]: Checked pairs total: 1830 [2021-10-07 15:43:59,191 INFO L133 LiptonReduction]: Total number of compositions: 109 [2021-10-07 15:43:59,201 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 46 places, 39 transitions, 102 flow [2021-10-07 15:43:59,232 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 211 states, 197 states have (on average 3.431472081218274) internal successors, (676), 210 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:43:59,236 INFO L276 IsEmpty]: Start isEmpty. Operand has 211 states, 197 states have (on average 3.431472081218274) internal successors, (676), 210 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:43:59,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2021-10-07 15:43:59,241 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:43:59,242 INFO L512 BasicCegarLoop]: trace histogram [1] [2021-10-07 15:43:59,243 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:43:59,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:43:59,249 INFO L82 PathProgramCache]: Analyzing trace with hash 437, now seen corresponding path program 1 times [2021-10-07 15:43:59,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:43:59,261 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [619492146] [2021-10-07 15:43:59,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:43:59,262 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:43:59,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:43:59,271 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:43:59,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-07 15:43:59,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:43:59,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-07 15:43:59,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:43:59,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:43:59,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:43:59,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:43:59,331 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:43:59,331 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [619492146] [2021-10-07 15:43:59,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [619492146] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:43:59,332 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:43:59,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0, 0] imperfect sequences [] total 0 [2021-10-07 15:43:59,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177790882] [2021-10-07 15:43:59,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-07 15:43:59,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:43:59,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-07 15:43:59,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-07 15:43:59,361 INFO L87 Difference]: Start difference. First operand has 211 states, 197 states have (on average 3.431472081218274) internal successors, (676), 210 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:43:59,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:43:59,397 INFO L93 Difference]: Finished difference Result 208 states and 673 transitions. [2021-10-07 15:43:59,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-07 15:43:59,399 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1 [2021-10-07 15:43:59,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:43:59,425 INFO L225 Difference]: With dead ends: 208 [2021-10-07 15:43:59,426 INFO L226 Difference]: Without dead ends: 208 [2021-10-07 15:43:59,428 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-07 15:43:59,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-10-07 15:43:59,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2021-10-07 15:43:59,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 197 states have (on average 3.416243654822335) internal successors, (673), 207 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:43:59,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 673 transitions. [2021-10-07 15:43:59,529 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 673 transitions. Word has length 1 [2021-10-07 15:43:59,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:43:59,529 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 673 transitions. [2021-10-07 15:43:59,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:43:59,530 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 673 transitions. [2021-10-07 15:43:59,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-07 15:43:59,533 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:43:59,534 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-07 15:43:59,556 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-07 15:43:59,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:43:59,735 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:43:59,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:43:59,736 INFO L82 PathProgramCache]: Analyzing trace with hash 430422, now seen corresponding path program 1 times [2021-10-07 15:43:59,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:43:59,737 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2115637095] [2021-10-07 15:43:59,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:43:59,738 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:43:59,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:43:59,740 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:43:59,743 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-07 15:43:59,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:43:59,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-07 15:43:59,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:43:59,986 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-10-07 15:43:59,987 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 2 case distinctions, treesize of input 12 treesize of output 22 [2021-10-07 15:44:00,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:00,032 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:44:00,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:00,051 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:44:00,051 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2115637095] [2021-10-07 15:44:00,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2115637095] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:44:00,052 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:44:00,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-07 15:44:00,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316800948] [2021-10-07 15:44:00,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 15:44:00,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:44:00,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 15:44:00,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:44:00,055 INFO L87 Difference]: Start difference. First operand 208 states and 673 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:44:00,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:44:00,120 INFO L93 Difference]: Finished difference Result 196 states and 640 transitions. [2021-10-07 15:44:00,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:44:00,121 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-07 15:44:00,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:44:00,127 INFO L225 Difference]: With dead ends: 196 [2021-10-07 15:44:00,127 INFO L226 Difference]: Without dead ends: 196 [2021-10-07 15:44:00,128 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:44:00,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2021-10-07 15:44:00,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2021-10-07 15:44:00,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 187 states have (on average 3.4224598930481283) internal successors, (640), 195 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:44:00,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 640 transitions. [2021-10-07 15:44:00,164 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 640 transitions. Word has length 3 [2021-10-07 15:44:00,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:44:00,164 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 640 transitions. [2021-10-07 15:44:00,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:44:00,165 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 640 transitions. [2021-10-07 15:44:00,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-07 15:44:00,165 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:44:00,165 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-07 15:44:00,178 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-07 15:44:00,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:44:00,379 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:44:00,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:44:00,380 INFO L82 PathProgramCache]: Analyzing trace with hash 430423, now seen corresponding path program 1 times [2021-10-07 15:44:00,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:44:00,381 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1209571227] [2021-10-07 15:44:00,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:44:00,382 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:44:00,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:44:00,383 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:44:00,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-07 15:44:00,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:44:00,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-07 15:44:00,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:44:00,613 INFO L354 Elim1Store]: treesize reduction 141, result has 23.8 percent of original size [2021-10-07 15:44:00,614 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 4 case distinctions, treesize of input 18 treesize of output 49 [2021-10-07 15:44:00,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:00,720 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:44:00,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:00,776 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:44:00,777 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1209571227] [2021-10-07 15:44:00,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1209571227] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:44:00,777 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:44:00,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 15:44:00,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369167498] [2021-10-07 15:44:00,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:44:00,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:44:00,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:44:00,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:44:00,779 INFO L87 Difference]: Start difference. First operand 196 states and 640 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:44:00,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:44:00,831 INFO L93 Difference]: Finished difference Result 184 states and 607 transitions. [2021-10-07 15:44:00,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:44:00,833 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-07 15:44:00,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:44:00,836 INFO L225 Difference]: With dead ends: 184 [2021-10-07 15:44:00,837 INFO L226 Difference]: Without dead ends: 184 [2021-10-07 15:44:00,837 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:44:00,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-10-07 15:44:00,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2021-10-07 15:44:00,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 177 states have (on average 3.4293785310734464) internal successors, (607), 183 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:44:00,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 607 transitions. [2021-10-07 15:44:00,860 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 607 transitions. Word has length 3 [2021-10-07 15:44:00,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:44:00,860 INFO L470 AbstractCegarLoop]: Abstraction has 184 states and 607 transitions. [2021-10-07 15:44:00,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:44:00,861 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 607 transitions. [2021-10-07 15:44:00,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-07 15:44:00,861 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:44:00,861 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-07 15:44:00,876 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-07 15:44:01,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:44:01,076 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:44:01,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:44:01,078 INFO L82 PathProgramCache]: Analyzing trace with hash 413646911, now seen corresponding path program 1 times [2021-10-07 15:44:01,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:44:01,079 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [380882692] [2021-10-07 15:44:01,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:44:01,079 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:44:01,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:44:01,081 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:44:01,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-07 15:44:01,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:44:01,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-07 15:44:01,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:44:01,196 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-10-07 15:44:01,197 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 2 case distinctions, treesize of input 12 treesize of output 22 [2021-10-07 15:44:01,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:01,245 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:44:01,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:01,262 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:44:01,263 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [380882692] [2021-10-07 15:44:01,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [380882692] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:44:01,263 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:44:01,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-07 15:44:01,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040551112] [2021-10-07 15:44:01,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 15:44:01,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:44:01,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 15:44:01,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:44:01,266 INFO L87 Difference]: Start difference. First operand 184 states and 607 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:44:01,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:44:01,316 INFO L93 Difference]: Finished difference Result 172 states and 574 transitions. [2021-10-07 15:44:01,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:44:01,317 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-07 15:44:01,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:44:01,325 INFO L225 Difference]: With dead ends: 172 [2021-10-07 15:44:01,325 INFO L226 Difference]: Without dead ends: 172 [2021-10-07 15:44:01,325 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:44:01,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2021-10-07 15:44:01,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2021-10-07 15:44:01,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 167 states have (on average 3.437125748502994) internal successors, (574), 171 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:44:01,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 574 transitions. [2021-10-07 15:44:01,366 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 574 transitions. Word has length 5 [2021-10-07 15:44:01,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:44:01,370 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 574 transitions. [2021-10-07 15:44:01,370 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:44:01,370 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 574 transitions. [2021-10-07 15:44:01,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-07 15:44:01,371 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:44:01,372 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-07 15:44:01,390 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-07 15:44:01,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:44:01,586 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:44:01,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:44:01,587 INFO L82 PathProgramCache]: Analyzing trace with hash 413646912, now seen corresponding path program 1 times [2021-10-07 15:44:01,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:44:01,589 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1259372855] [2021-10-07 15:44:01,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:44:01,589 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:44:01,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:44:01,590 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:44:01,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-07 15:44:01,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:44:01,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-07 15:44:01,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:44:01,843 INFO L354 Elim1Store]: treesize reduction 141, result has 23.8 percent of original size [2021-10-07 15:44:01,844 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 4 case distinctions, treesize of input 18 treesize of output 49 [2021-10-07 15:44:01,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:01,950 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:44:02,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:02,045 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:44:02,045 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1259372855] [2021-10-07 15:44:02,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1259372855] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:44:02,045 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:44:02,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 15:44:02,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508760083] [2021-10-07 15:44:02,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:44:02,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:44:02,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:44:02,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:44:02,048 INFO L87 Difference]: Start difference. First operand 172 states and 574 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:44:02,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:44:02,081 INFO L93 Difference]: Finished difference Result 160 states and 541 transitions. [2021-10-07 15:44:02,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:44:02,081 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-07 15:44:02,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:44:02,084 INFO L225 Difference]: With dead ends: 160 [2021-10-07 15:44:02,084 INFO L226 Difference]: Without dead ends: 160 [2021-10-07 15:44:02,084 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:44:02,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-10-07 15:44:02,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2021-10-07 15:44:02,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 157 states have (on average 3.445859872611465) internal successors, (541), 159 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:44:02,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 541 transitions. [2021-10-07 15:44:02,095 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 541 transitions. Word has length 5 [2021-10-07 15:44:02,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:44:02,095 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 541 transitions. [2021-10-07 15:44:02,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:44:02,095 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 541 transitions. [2021-10-07 15:44:02,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-07 15:44:02,096 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:44:02,096 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:44:02,113 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-07 15:44:02,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:44:02,314 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:44:02,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:44:02,315 INFO L82 PathProgramCache]: Analyzing trace with hash -1917265604, now seen corresponding path program 1 times [2021-10-07 15:44:02,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:44:02,316 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1095002] [2021-10-07 15:44:02,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:44:02,316 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:44:02,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:44:02,319 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:44:02,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-07 15:44:02,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:44:02,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-07 15:44:02,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:44:02,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:02,504 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:44:02,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:02,605 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:44:02,605 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1095002] [2021-10-07 15:44:02,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1095002] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:44:02,606 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:44:02,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-07 15:44:02,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851444289] [2021-10-07 15:44:02,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 15:44:02,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:44:02,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 15:44:02,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:44:02,608 INFO L87 Difference]: Start difference. First operand 160 states and 541 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:44:02,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:44:02,637 INFO L93 Difference]: Finished difference Result 133 states and 433 transitions. [2021-10-07 15:44:02,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:44:02,638 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-07 15:44:02,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:44:02,640 INFO L225 Difference]: With dead ends: 133 [2021-10-07 15:44:02,640 INFO L226 Difference]: Without dead ends: 133 [2021-10-07 15:44:02,640 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:44:02,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-10-07 15:44:02,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2021-10-07 15:44:02,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 131 states have (on average 3.3053435114503817) internal successors, (433), 132 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:44:02,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 433 transitions. [2021-10-07 15:44:02,648 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 433 transitions. Word has length 7 [2021-10-07 15:44:02,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:44:02,649 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 433 transitions. [2021-10-07 15:44:02,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:44:02,649 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 433 transitions. [2021-10-07 15:44:02,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-07 15:44:02,650 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:44:02,650 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:44:02,664 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-07 15:44:02,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:44:02,863 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:44:02,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:44:02,864 INFO L82 PathProgramCache]: Analyzing trace with hash -1917265602, now seen corresponding path program 1 times [2021-10-07 15:44:02,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:44:02,865 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [951884335] [2021-10-07 15:44:02,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:44:02,866 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:44:02,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:44:02,867 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:44:02,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-07 15:44:02,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:44:02,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-07 15:44:02,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:44:02,985 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-10-07 15:44:02,985 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 2 case distinctions, treesize of input 12 treesize of output 22 [2021-10-07 15:44:03,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:03,064 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:44:03,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:03,109 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:44:03,109 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [951884335] [2021-10-07 15:44:03,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [951884335] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:44:03,110 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:44:03,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-07 15:44:03,110 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268796890] [2021-10-07 15:44:03,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-07 15:44:03,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:44:03,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-07 15:44:03,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-07 15:44:03,112 INFO L87 Difference]: Start difference. First operand 133 states and 433 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:44:03,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:44:03,145 INFO L93 Difference]: Finished difference Result 106 states and 325 transitions. [2021-10-07 15:44:03,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:44:03,146 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 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 7 [2021-10-07 15:44:03,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:44:03,147 INFO L225 Difference]: With dead ends: 106 [2021-10-07 15:44:03,148 INFO L226 Difference]: Without dead ends: 106 [2021-10-07 15:44:03,148 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 32.7ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-07 15:44:03,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-10-07 15:44:03,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2021-10-07 15:44:03,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 3.0952380952380953) internal successors, (325), 105 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:44:03,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 325 transitions. [2021-10-07 15:44:03,154 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 325 transitions. Word has length 7 [2021-10-07 15:44:03,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:44:03,155 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 325 transitions. [2021-10-07 15:44:03,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:44:03,155 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 325 transitions. [2021-10-07 15:44:03,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 15:44:03,157 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:44:03,157 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:44:03,178 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-07 15:44:03,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:44:03,370 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:44:03,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:44:03,371 INFO L82 PathProgramCache]: Analyzing trace with hash -843869938, now seen corresponding path program 1 times [2021-10-07 15:44:03,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:44:03,372 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [528656544] [2021-10-07 15:44:03,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:44:03,372 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:44:03,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:44:03,373 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:44:03,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-07 15:44:03,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:44:03,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-07 15:44:03,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:44:03,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:03,683 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:44:03,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:03,796 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:44:03,796 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [528656544] [2021-10-07 15:44:03,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [528656544] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:44:03,796 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:44:03,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 15:44:03,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381731036] [2021-10-07 15:44:03,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:44:03,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:44:03,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:44:03,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:44:03,798 INFO L87 Difference]: Start difference. First operand 106 states and 325 transitions. Second operand has 4 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:44:03,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:44:03,822 INFO L93 Difference]: Finished difference Result 203 states and 630 transitions. [2021-10-07 15:44:03,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:44:03,823 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 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 19 [2021-10-07 15:44:03,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:44:03,825 INFO L225 Difference]: With dead ends: 203 [2021-10-07 15:44:03,826 INFO L226 Difference]: Without dead ends: 196 [2021-10-07 15:44:03,826 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:44:03,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2021-10-07 15:44:03,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2021-10-07 15:44:03,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 195 states have (on average 3.1384615384615384) internal successors, (612), 195 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:44:03,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 612 transitions. [2021-10-07 15:44:03,837 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 612 transitions. Word has length 19 [2021-10-07 15:44:03,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:44:03,837 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 612 transitions. [2021-10-07 15:44:03,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:44:03,837 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 612 transitions. [2021-10-07 15:44:03,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:44:03,840 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:44:03,840 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] [2021-10-07 15:44:03,859 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-07 15:44:04,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:44:04,054 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:44:04,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:44:04,056 INFO L82 PathProgramCache]: Analyzing trace with hash 1181483693, now seen corresponding path program 1 times [2021-10-07 15:44:04,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:44:04,056 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1979315743] [2021-10-07 15:44:04,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:44:04,057 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:44:04,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:44:04,058 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:44:04,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-07 15:44:04,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:44:04,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:44:04,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:44:04,361 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:04,361 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:44:04,708 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:04,708 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:44:04,708 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1979315743] [2021-10-07 15:44:04,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1979315743] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:44:04,709 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:44:04,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-10-07 15:44:04,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067234101] [2021-10-07 15:44:04,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 15:44:04,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:44:04,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 15:44:04,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:44:04,711 INFO L87 Difference]: Start difference. First operand 196 states and 612 transitions. Second operand has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:44:05,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:44:05,531 INFO L93 Difference]: Finished difference Result 448 states and 1331 transitions. [2021-10-07 15:44:05,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-07 15:44:05,532 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:44:05,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:44:05,537 INFO L225 Difference]: With dead ends: 448 [2021-10-07 15:44:05,537 INFO L226 Difference]: Without dead ends: 448 [2021-10-07 15:44:05,537 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 421.7ms TimeCoverageRelationStatistics Valid=156, Invalid=350, Unknown=0, NotChecked=0, Total=506 [2021-10-07 15:44:05,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2021-10-07 15:44:05,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 236. [2021-10-07 15:44:05,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 235 states have (on average 3.2851063829787233) internal successors, (772), 235 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:44:05,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 772 transitions. [2021-10-07 15:44:05,555 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 772 transitions. Word has length 20 [2021-10-07 15:44:05,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:44:05,556 INFO L470 AbstractCegarLoop]: Abstraction has 236 states and 772 transitions. [2021-10-07 15:44:05,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:44:05,556 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 772 transitions. [2021-10-07 15:44:05,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:44:05,558 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:44:05,558 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] [2021-10-07 15:44:05,573 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-07 15:44:05,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:44:05,771 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:44:05,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:44:05,773 INFO L82 PathProgramCache]: Analyzing trace with hash 413728867, now seen corresponding path program 1 times [2021-10-07 15:44:05,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:44:05,774 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1292725233] [2021-10-07 15:44:05,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:44:05,774 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:44:05,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:44:05,775 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:44:05,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-07 15:44:05,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:44:05,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:44:05,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:44:06,029 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:06,030 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:44:06,462 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:06,463 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:44:06,463 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1292725233] [2021-10-07 15:44:06,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1292725233] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-07 15:44:06,463 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:44:06,464 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2021-10-07 15:44:06,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853339164] [2021-10-07 15:44:06,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-07 15:44:06,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:44:06,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-07 15:44:06,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:44:06,466 INFO L87 Difference]: Start difference. First operand 236 states and 772 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:44:06,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:44:06,676 INFO L93 Difference]: Finished difference Result 290 states and 900 transitions. [2021-10-07 15:44:06,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-07 15:44:06,677 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:44:06,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:44:06,680 INFO L225 Difference]: With dead ends: 290 [2021-10-07 15:44:06,681 INFO L226 Difference]: Without dead ends: 278 [2021-10-07 15:44:06,681 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 297.6ms TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2021-10-07 15:44:06,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2021-10-07 15:44:06,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 226. [2021-10-07 15:44:06,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 225 states have (on average 3.2355555555555555) internal successors, (728), 225 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:44:06,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 728 transitions. [2021-10-07 15:44:06,693 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 728 transitions. Word has length 20 [2021-10-07 15:44:06,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:44:06,693 INFO L470 AbstractCegarLoop]: Abstraction has 226 states and 728 transitions. [2021-10-07 15:44:06,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:44:06,693 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 728 transitions. [2021-10-07 15:44:06,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:44:06,695 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:44:06,695 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] [2021-10-07 15:44:06,712 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-07 15:44:06,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:44:06,908 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:44:06,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:44:06,909 INFO L82 PathProgramCache]: Analyzing trace with hash 1662713069, now seen corresponding path program 2 times [2021-10-07 15:44:06,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:44:06,910 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1518621014] [2021-10-07 15:44:06,910 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:44:06,910 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:44:06,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:44:06,911 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:44:06,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-07 15:44:07,063 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:44:07,063 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:44:07,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:44:07,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:44:07,241 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:07,241 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:44:07,737 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:07,737 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:44:07,737 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1518621014] [2021-10-07 15:44:07,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1518621014] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:44:07,738 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:44:07,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-10-07 15:44:07,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383352869] [2021-10-07 15:44:07,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 15:44:07,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:44:07,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 15:44:07,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:44:07,740 INFO L87 Difference]: Start difference. First operand 226 states and 728 transitions. Second operand has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:44:08,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:44:08,654 INFO L93 Difference]: Finished difference Result 390 states and 1134 transitions. [2021-10-07 15:44:08,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-07 15:44:08,655 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:44:08,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:44:08,658 INFO L225 Difference]: With dead ends: 390 [2021-10-07 15:44:08,659 INFO L226 Difference]: Without dead ends: 390 [2021-10-07 15:44:08,659 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 517.8ms TimeCoverageRelationStatistics Valid=126, Invalid=294, Unknown=0, NotChecked=0, Total=420 [2021-10-07 15:44:08,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2021-10-07 15:44:08,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 242. [2021-10-07 15:44:08,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 241 states have (on average 3.3029045643153525) internal successors, (796), 241 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:44:08,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 796 transitions. [2021-10-07 15:44:08,673 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 796 transitions. Word has length 20 [2021-10-07 15:44:08,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:44:08,674 INFO L470 AbstractCegarLoop]: Abstraction has 242 states and 796 transitions. [2021-10-07 15:44:08,674 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:44:08,674 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 796 transitions. [2021-10-07 15:44:08,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:44:08,676 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:44:08,676 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] [2021-10-07 15:44:08,690 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-07 15:44:08,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:44:08,888 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:44:08,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:44:08,890 INFO L82 PathProgramCache]: Analyzing trace with hash -568339617, now seen corresponding path program 3 times [2021-10-07 15:44:08,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:44:08,891 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1722466559] [2021-10-07 15:44:08,891 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:44:08,891 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:44:08,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:44:08,892 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:44:08,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-07 15:44:09,038 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 15:44:09,038 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:44:09,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-07 15:44:09,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:44:09,175 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:09,175 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:44:09,264 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:09,265 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:44:09,268 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1722466559] [2021-10-07 15:44:09,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1722466559] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:44:09,269 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:44:09,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 7 [2021-10-07 15:44:09,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340841421] [2021-10-07 15:44:09,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-07 15:44:09,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:44:09,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-07 15:44:09,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-07 15:44:09,272 INFO L87 Difference]: Start difference. First operand 242 states and 796 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:44:09,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:44:09,441 INFO L93 Difference]: Finished difference Result 336 states and 1043 transitions. [2021-10-07 15:44:09,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-07 15:44:09,442 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:44:09,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:44:09,445 INFO L225 Difference]: With dead ends: 336 [2021-10-07 15:44:09,445 INFO L226 Difference]: Without dead ends: 322 [2021-10-07 15:44:09,446 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 66.9ms TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-10-07 15:44:09,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2021-10-07 15:44:09,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 258. [2021-10-07 15:44:09,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 257 states have (on average 3.2412451361867705) internal successors, (833), 257 states have internal predecessors, (833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:44:09,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 833 transitions. [2021-10-07 15:44:09,461 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 833 transitions. Word has length 20 [2021-10-07 15:44:09,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:44:09,461 INFO L470 AbstractCegarLoop]: Abstraction has 258 states and 833 transitions. [2021-10-07 15:44:09,461 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:44:09,461 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 833 transitions. [2021-10-07 15:44:09,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:44:09,463 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:44:09,463 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] [2021-10-07 15:44:09,480 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-07 15:44:09,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:44:09,677 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:44:09,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:44:09,677 INFO L82 PathProgramCache]: Analyzing trace with hash -930482829, now seen corresponding path program 4 times [2021-10-07 15:44:09,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:44:09,678 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1995973176] [2021-10-07 15:44:09,678 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:44:09,678 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:44:09,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:44:09,680 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:44:09,713 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-07 15:44:09,817 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:44:09,817 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:44:09,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:44:09,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:44:10,003 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:10,003 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:44:10,469 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:10,470 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:44:10,470 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1995973176] [2021-10-07 15:44:10,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1995973176] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:44:10,472 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:44:10,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-10-07 15:44:10,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361081632] [2021-10-07 15:44:10,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 15:44:10,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:44:10,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 15:44:10,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:44:10,476 INFO L87 Difference]: Start difference. First operand 258 states and 833 transitions. Second operand has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:44:11,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:44:11,272 INFO L93 Difference]: Finished difference Result 388 states and 1150 transitions. [2021-10-07 15:44:11,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-07 15:44:11,276 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:44:11,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:44:11,279 INFO L225 Difference]: With dead ends: 388 [2021-10-07 15:44:11,280 INFO L226 Difference]: Without dead ends: 388 [2021-10-07 15:44:11,280 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 504.4ms TimeCoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2021-10-07 15:44:11,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2021-10-07 15:44:11,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 250. [2021-10-07 15:44:11,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 249 states have (on average 3.2248995983935744) internal successors, (803), 249 states have internal predecessors, (803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:44:11,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 803 transitions. [2021-10-07 15:44:11,294 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 803 transitions. Word has length 20 [2021-10-07 15:44:11,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:44:11,294 INFO L470 AbstractCegarLoop]: Abstraction has 250 states and 803 transitions. [2021-10-07 15:44:11,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:44:11,295 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 803 transitions. [2021-10-07 15:44:11,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:44:11,296 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:44:11,296 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] [2021-10-07 15:44:11,308 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-07 15:44:11,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:44:11,509 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:44:11,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:44:11,510 INFO L82 PathProgramCache]: Analyzing trace with hash -47017307, now seen corresponding path program 5 times [2021-10-07 15:44:11,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:44:11,510 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1253865781] [2021-10-07 15:44:11,511 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:44:11,511 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:44:11,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:44:11,512 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:44:11,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-07 15:44:11,659 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:44:11,660 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:44:11,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:44:11,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:44:11,877 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:11,877 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:44:12,205 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:12,206 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:44:12,206 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1253865781] [2021-10-07 15:44:12,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1253865781] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:44:12,207 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:44:12,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-10-07 15:44:12,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533855971] [2021-10-07 15:44:12,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 15:44:12,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:44:12,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 15:44:12,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:44:12,209 INFO L87 Difference]: Start difference. First operand 250 states and 803 transitions. Second operand has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:44:13,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:44:13,429 INFO L93 Difference]: Finished difference Result 880 states and 2645 transitions. [2021-10-07 15:44:13,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-07 15:44:13,430 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:44:13,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:44:13,438 INFO L225 Difference]: With dead ends: 880 [2021-10-07 15:44:13,439 INFO L226 Difference]: Without dead ends: 880 [2021-10-07 15:44:13,440 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 621.4ms TimeCoverageRelationStatistics Valid=191, Invalid=409, Unknown=0, NotChecked=0, Total=600 [2021-10-07 15:44:13,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 880 states. [2021-10-07 15:44:13,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 880 to 270. [2021-10-07 15:44:13,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 269 states have (on average 3.323420074349442) internal successors, (894), 269 states have internal predecessors, (894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:44:13,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 894 transitions. [2021-10-07 15:44:13,464 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 894 transitions. Word has length 20 [2021-10-07 15:44:13,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:44:13,465 INFO L470 AbstractCegarLoop]: Abstraction has 270 states and 894 transitions. [2021-10-07 15:44:13,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:44:13,465 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 894 transitions. [2021-10-07 15:44:13,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:44:13,466 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:44:13,467 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] [2021-10-07 15:44:13,484 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-10-07 15:44:13,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:44:13,680 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:44:13,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:44:13,681 INFO L82 PathProgramCache]: Analyzing trace with hash 2090770861, now seen corresponding path program 6 times [2021-10-07 15:44:13,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:44:13,681 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1690791076] [2021-10-07 15:44:13,682 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:44:13,682 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:44:13,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:44:13,684 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:44:13,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-07 15:44:13,864 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-07 15:44:13,864 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:44:13,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:44:13,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:44:14,146 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:14,146 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:44:14,457 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:14,457 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:44:14,457 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1690791076] [2021-10-07 15:44:14,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1690791076] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:44:14,458 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:44:14,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-10-07 15:44:14,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415808339] [2021-10-07 15:44:14,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 15:44:14,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:44:14,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 15:44:14,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:44:14,461 INFO L87 Difference]: Start difference. First operand 270 states and 894 transitions. Second operand has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:44:16,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:44:16,125 INFO L93 Difference]: Finished difference Result 890 states and 2621 transitions. [2021-10-07 15:44:16,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-07 15:44:16,126 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:44:16,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:44:16,133 INFO L225 Difference]: With dead ends: 890 [2021-10-07 15:44:16,134 INFO L226 Difference]: Without dead ends: 890 [2021-10-07 15:44:16,134 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 820.7ms TimeCoverageRelationStatistics Valid=262, Invalid=550, Unknown=0, NotChecked=0, Total=812 [2021-10-07 15:44:16,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2021-10-07 15:44:16,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 278. [2021-10-07 15:44:16,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 277 states have (on average 3.4007220216606497) internal successors, (942), 277 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:44:16,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 942 transitions. [2021-10-07 15:44:16,156 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 942 transitions. Word has length 20 [2021-10-07 15:44:16,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:44:16,157 INFO L470 AbstractCegarLoop]: Abstraction has 278 states and 942 transitions. [2021-10-07 15:44:16,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:44:16,157 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 942 transitions. [2021-10-07 15:44:16,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:44:16,159 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:44:16,159 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] [2021-10-07 15:44:16,174 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-07 15:44:16,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:44:16,372 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:44:16,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:44:16,373 INFO L82 PathProgramCache]: Analyzing trace with hash 2105042365, now seen corresponding path program 7 times [2021-10-07 15:44:16,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:44:16,374 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1024418090] [2021-10-07 15:44:16,375 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:44:16,375 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:44:16,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:44:16,376 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:44:16,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-07 15:44:16,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:44:16,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:44:16,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:44:16,802 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:16,802 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:44:17,062 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:17,062 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:44:17,063 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1024418090] [2021-10-07 15:44:17,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1024418090] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:44:17,063 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:44:17,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-10-07 15:44:17,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693259268] [2021-10-07 15:44:17,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 15:44:17,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:44:17,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 15:44:17,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:44:17,066 INFO L87 Difference]: Start difference. First operand 278 states and 942 transitions. Second operand has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:44:18,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:44:18,512 INFO L93 Difference]: Finished difference Result 798 states and 2437 transitions. [2021-10-07 15:44:18,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-07 15:44:18,518 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:44:18,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:44:18,525 INFO L225 Difference]: With dead ends: 798 [2021-10-07 15:44:18,525 INFO L226 Difference]: Without dead ends: 798 [2021-10-07 15:44:18,526 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 837.0ms TimeCoverageRelationStatistics Valid=256, Invalid=500, Unknown=0, NotChecked=0, Total=756 [2021-10-07 15:44:18,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 798 states. [2021-10-07 15:44:18,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 798 to 280. [2021-10-07 15:44:18,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 279 states have (on average 3.401433691756272) internal successors, (949), 279 states have internal predecessors, (949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:44:18,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 949 transitions. [2021-10-07 15:44:18,544 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 949 transitions. Word has length 20 [2021-10-07 15:44:18,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:44:18,545 INFO L470 AbstractCegarLoop]: Abstraction has 280 states and 949 transitions. [2021-10-07 15:44:18,545 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:44:18,545 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 949 transitions. [2021-10-07 15:44:18,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:44:18,547 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:44:18,547 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] [2021-10-07 15:44:18,560 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-07 15:44:18,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:44:18,760 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:44:18,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:44:18,767 INFO L82 PathProgramCache]: Analyzing trace with hash -1006453781, now seen corresponding path program 2 times [2021-10-07 15:44:18,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:44:18,768 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [824026774] [2021-10-07 15:44:18,768 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:44:18,768 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:44:18,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:44:18,769 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:44:18,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-07 15:44:18,975 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:44:18,976 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:44:18,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:44:18,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:44:19,128 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:19,129 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:44:19,609 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:19,610 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:44:19,610 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [824026774] [2021-10-07 15:44:19,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [824026774] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-07 15:44:19,610 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:44:19,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2021-10-07 15:44:19,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748471549] [2021-10-07 15:44:19,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-07 15:44:19,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:44:19,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-07 15:44:19,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:44:19,612 INFO L87 Difference]: Start difference. First operand 280 states and 949 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:44:19,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:44:19,813 INFO L93 Difference]: Finished difference Result 434 states and 1355 transitions. [2021-10-07 15:44:19,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-07 15:44:19,814 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:44:19,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:44:19,817 INFO L225 Difference]: With dead ends: 434 [2021-10-07 15:44:19,817 INFO L226 Difference]: Without dead ends: 422 [2021-10-07 15:44:19,818 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 274.5ms TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2021-10-07 15:44:19,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2021-10-07 15:44:19,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 300. [2021-10-07 15:44:19,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 299 states have (on average 3.3846153846153846) internal successors, (1012), 299 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:44:19,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 1012 transitions. [2021-10-07 15:44:19,832 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 1012 transitions. Word has length 20 [2021-10-07 15:44:19,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:44:19,832 INFO L470 AbstractCegarLoop]: Abstraction has 300 states and 1012 transitions. [2021-10-07 15:44:19,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:44:19,833 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 1012 transitions. [2021-10-07 15:44:19,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:44:19,834 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:44:19,834 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:44:19,852 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-07 15:44:20,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:44:20,048 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:44:20,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:44:20,049 INFO L82 PathProgramCache]: Analyzing trace with hash -502422151, now seen corresponding path program 3 times [2021-10-07 15:44:20,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:44:20,050 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1371407247] [2021-10-07 15:44:20,050 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:44:20,051 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:44:20,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:44:20,052 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:44:20,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-07 15:44:20,307 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 15:44:20,307 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:44:20,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:44:20,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:44:20,457 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:20,458 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:44:21,564 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:21,564 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:44:21,564 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1371407247] [2021-10-07 15:44:21,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1371407247] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-07 15:44:21,565 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:44:21,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2021-10-07 15:44:21,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587328940] [2021-10-07 15:44:21,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-07 15:44:21,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:44:21,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-07 15:44:21,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:44:21,567 INFO L87 Difference]: Start difference. First operand 300 states and 1012 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:44:21,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:44:21,732 INFO L93 Difference]: Finished difference Result 440 states and 1374 transitions. [2021-10-07 15:44:21,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-07 15:44:21,733 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:44:21,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:44:21,737 INFO L225 Difference]: With dead ends: 440 [2021-10-07 15:44:21,737 INFO L226 Difference]: Without dead ends: 440 [2021-10-07 15:44:21,738 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 799.6ms TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2021-10-07 15:44:21,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2021-10-07 15:44:21,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 300. [2021-10-07 15:44:21,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 299 states have (on average 3.3846153846153846) internal successors, (1012), 299 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:44:21,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 1012 transitions. [2021-10-07 15:44:21,751 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 1012 transitions. Word has length 20 [2021-10-07 15:44:21,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:44:21,752 INFO L470 AbstractCegarLoop]: Abstraction has 300 states and 1012 transitions. [2021-10-07 15:44:21,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:44:21,752 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 1012 transitions. [2021-10-07 15:44:21,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:44:21,754 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:44:21,754 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] [2021-10-07 15:44:21,770 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-07 15:44:21,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:44:21,968 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:44:21,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:44:21,969 INFO L82 PathProgramCache]: Analyzing trace with hash -877790757, now seen corresponding path program 4 times [2021-10-07 15:44:21,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:44:21,970 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1926183083] [2021-10-07 15:44:21,970 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:44:21,971 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:44:21,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:44:21,972 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:44:21,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-07 15:44:22,152 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:44:22,152 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:44:22,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:44:22,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:44:22,304 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:22,304 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:44:22,751 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:22,752 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:44:22,752 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1926183083] [2021-10-07 15:44:22,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1926183083] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-07 15:44:22,752 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:44:22,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2021-10-07 15:44:22,753 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574904262] [2021-10-07 15:44:22,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-07 15:44:22,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:44:22,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-07 15:44:22,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:44:22,754 INFO L87 Difference]: Start difference. First operand 300 states and 1012 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:44:23,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:44:23,024 INFO L93 Difference]: Finished difference Result 420 states and 1314 transitions. [2021-10-07 15:44:23,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-07 15:44:23,025 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:44:23,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:44:23,028 INFO L225 Difference]: With dead ends: 420 [2021-10-07 15:44:23,029 INFO L226 Difference]: Without dead ends: 408 [2021-10-07 15:44:23,029 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 276.9ms TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2021-10-07 15:44:23,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2021-10-07 15:44:23,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 306. [2021-10-07 15:44:23,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 305 states have (on average 3.3868852459016394) internal successors, (1033), 305 states have internal predecessors, (1033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:44:23,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 1033 transitions. [2021-10-07 15:44:23,041 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 1033 transitions. Word has length 20 [2021-10-07 15:44:23,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:44:23,041 INFO L470 AbstractCegarLoop]: Abstraction has 306 states and 1033 transitions. [2021-10-07 15:44:23,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:44:23,042 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 1033 transitions. [2021-10-07 15:44:23,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:44:23,043 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:44:23,043 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] [2021-10-07 15:44:23,060 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-07 15:44:23,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:44:23,249 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:44:23,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:44:23,250 INFO L82 PathProgramCache]: Analyzing trace with hash 1224305323, now seen corresponding path program 1 times [2021-10-07 15:44:23,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:44:23,251 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [848369608] [2021-10-07 15:44:23,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:44:23,251 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:44:23,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:44:23,252 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:44:23,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-07 15:44:23,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:44:23,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:44:23,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:44:23,681 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:23,681 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:44:23,897 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:23,898 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:44:23,898 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [848369608] [2021-10-07 15:44:23,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [848369608] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:44:23,898 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:44:23,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2021-10-07 15:44:23,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817162023] [2021-10-07 15:44:23,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 15:44:23,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:44:23,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 15:44:23,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:44:23,900 INFO L87 Difference]: Start difference. First operand 306 states and 1033 transitions. Second operand has 13 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:44:25,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:44:25,801 INFO L93 Difference]: Finished difference Result 756 states and 2300 transitions. [2021-10-07 15:44:25,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-07 15:44:25,802 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:44:25,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:44:25,808 INFO L225 Difference]: With dead ends: 756 [2021-10-07 15:44:25,808 INFO L226 Difference]: Without dead ends: 756 [2021-10-07 15:44:25,809 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 854.3ms TimeCoverageRelationStatistics Valid=227, Invalid=703, Unknown=0, NotChecked=0, Total=930 [2021-10-07 15:44:25,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2021-10-07 15:44:25,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 318. [2021-10-07 15:44:25,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 317 states have (on average 3.3533123028391167) internal successors, (1063), 317 states have internal predecessors, (1063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:44:25,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 1063 transitions. [2021-10-07 15:44:25,826 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 1063 transitions. Word has length 20 [2021-10-07 15:44:25,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:44:25,826 INFO L470 AbstractCegarLoop]: Abstraction has 318 states and 1063 transitions. [2021-10-07 15:44:25,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:44:25,827 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 1063 transitions. [2021-10-07 15:44:25,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:44:25,828 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:44:25,828 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] [2021-10-07 15:44:25,841 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-10-07 15:44:26,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:44:26,041 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:44:26,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:44:26,042 INFO L82 PathProgramCache]: Analyzing trace with hash 1464852971, now seen corresponding path program 2 times [2021-10-07 15:44:26,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:44:26,043 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1702865682] [2021-10-07 15:44:26,043 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:44:26,044 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:44:26,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:44:26,047 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:44:26,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-07 15:44:26,324 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:44:26,324 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:44:26,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:44:26,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:44:26,487 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:26,487 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:44:26,778 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:26,778 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:44:26,778 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1702865682] [2021-10-07 15:44:26,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1702865682] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-07 15:44:26,779 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:44:26,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-10-07 15:44:26,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450111868] [2021-10-07 15:44:26,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-07 15:44:26,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:44:26,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-07 15:44:26,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:44:26,781 INFO L87 Difference]: Start difference. First operand 318 states and 1063 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:44:27,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:44:27,102 INFO L93 Difference]: Finished difference Result 410 states and 1316 transitions. [2021-10-07 15:44:27,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-07 15:44:27,103 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:44:27,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:44:27,107 INFO L225 Difference]: With dead ends: 410 [2021-10-07 15:44:27,107 INFO L226 Difference]: Without dead ends: 408 [2021-10-07 15:44:27,107 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 315.3ms TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2021-10-07 15:44:27,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2021-10-07 15:44:27,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 320. [2021-10-07 15:44:27,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 319 states have (on average 3.347962382445141) internal successors, (1068), 319 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:44:27,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 1068 transitions. [2021-10-07 15:44:27,120 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 1068 transitions. Word has length 20 [2021-10-07 15:44:27,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:44:27,121 INFO L470 AbstractCegarLoop]: Abstraction has 320 states and 1068 transitions. [2021-10-07 15:44:27,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:44:27,121 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 1068 transitions. [2021-10-07 15:44:27,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:44:27,122 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:44:27,122 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] [2021-10-07 15:44:27,135 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-10-07 15:44:27,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:44:27,336 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:44:27,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:44:27,337 INFO L82 PathProgramCache]: Analyzing trace with hash -835237757, now seen corresponding path program 3 times [2021-10-07 15:44:27,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:44:27,337 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1067743982] [2021-10-07 15:44:27,338 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:44:27,338 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:44:27,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:44:27,339 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:44:27,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-10-07 15:44:27,592 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 15:44:27,593 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:44:27,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:44:27,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:44:27,785 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:27,785 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:44:28,094 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:28,094 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:44:28,094 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1067743982] [2021-10-07 15:44:28,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1067743982] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:44:28,095 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:44:28,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2021-10-07 15:44:28,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803390293] [2021-10-07 15:44:28,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 15:44:28,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:44:28,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 15:44:28,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:44:28,097 INFO L87 Difference]: Start difference. First operand 320 states and 1068 transitions. Second operand has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:44:30,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:44:30,143 INFO L93 Difference]: Finished difference Result 756 states and 2306 transitions. [2021-10-07 15:44:30,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-07 15:44:30,144 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:44:30,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:44:30,149 INFO L225 Difference]: With dead ends: 756 [2021-10-07 15:44:30,149 INFO L226 Difference]: Without dead ends: 756 [2021-10-07 15:44:30,149 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 1175.9ms TimeCoverageRelationStatistics Valid=226, Invalid=644, Unknown=0, NotChecked=0, Total=870 [2021-10-07 15:44:30,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2021-10-07 15:44:30,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 330. [2021-10-07 15:44:30,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 329 states have (on average 3.370820668693009) internal successors, (1109), 329 states have internal predecessors, (1109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:44:30,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 1109 transitions. [2021-10-07 15:44:30,168 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 1109 transitions. Word has length 20 [2021-10-07 15:44:30,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:44:30,168 INFO L470 AbstractCegarLoop]: Abstraction has 330 states and 1109 transitions. [2021-10-07 15:44:30,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:44:30,169 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 1109 transitions. [2021-10-07 15:44:30,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:44:30,170 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:44:30,170 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] [2021-10-07 15:44:30,184 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-10-07 15:44:30,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:44:30,384 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:44:30,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:44:30,385 INFO L82 PathProgramCache]: Analyzing trace with hash 238046889, now seen corresponding path program 4 times [2021-10-07 15:44:30,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:44:30,386 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1105167661] [2021-10-07 15:44:30,386 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:44:30,387 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:44:30,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:44:30,388 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:44:30,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-07 15:44:30,606 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:44:30,606 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:44:30,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:44:30,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:44:30,785 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:30,785 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:44:31,318 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:31,319 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:44:31,319 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1105167661] [2021-10-07 15:44:31,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1105167661] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:44:31,319 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:44:31,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2021-10-07 15:44:31,320 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136128870] [2021-10-07 15:44:31,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 15:44:31,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:44:31,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 15:44:31,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:44:31,321 INFO L87 Difference]: Start difference. First operand 330 states and 1109 transitions. Second operand has 13 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:44:35,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:44:35,182 INFO L93 Difference]: Finished difference Result 704 states and 2148 transitions. [2021-10-07 15:44:35,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-07 15:44:35,186 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:44:35,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:44:35,191 INFO L225 Difference]: With dead ends: 704 [2021-10-07 15:44:35,192 INFO L226 Difference]: Without dead ends: 704 [2021-10-07 15:44:35,192 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 1822.8ms TimeCoverageRelationStatistics Valid=156, Invalid=350, Unknown=0, NotChecked=0, Total=506 [2021-10-07 15:44:35,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2021-10-07 15:44:35,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 356. [2021-10-07 15:44:35,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 355 states have (on average 3.476056338028169) internal successors, (1234), 355 states have internal predecessors, (1234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:44:35,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 1234 transitions. [2021-10-07 15:44:35,212 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 1234 transitions. Word has length 20 [2021-10-07 15:44:35,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:44:35,212 INFO L470 AbstractCegarLoop]: Abstraction has 356 states and 1234 transitions. [2021-10-07 15:44:35,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:44:35,212 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 1234 transitions. [2021-10-07 15:44:35,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:44:35,214 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:44:35,214 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] [2021-10-07 15:44:35,228 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-10-07 15:44:35,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:44:35,428 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:44:35,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:44:35,429 INFO L82 PathProgramCache]: Analyzing trace with hash -277635321, now seen corresponding path program 5 times [2021-10-07 15:44:35,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:44:35,430 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2118445301] [2021-10-07 15:44:35,430 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:44:35,430 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:44:35,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:44:35,432 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:44:35,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-10-07 15:44:35,668 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:44:35,668 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:44:35,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:44:35,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:44:35,849 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:35,849 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:44:36,651 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:36,651 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:44:36,652 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2118445301] [2021-10-07 15:44:36,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2118445301] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:44:36,652 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:44:36,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2021-10-07 15:44:36,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621403721] [2021-10-07 15:44:36,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 15:44:36,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:44:36,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 15:44:36,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:44:36,654 INFO L87 Difference]: Start difference. First operand 356 states and 1234 transitions. Second operand has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:44:39,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:44:39,218 INFO L93 Difference]: Finished difference Result 660 states and 2060 transitions. [2021-10-07 15:44:39,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-07 15:44:39,219 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:44:39,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:44:39,222 INFO L225 Difference]: With dead ends: 660 [2021-10-07 15:44:39,222 INFO L226 Difference]: Without dead ends: 660 [2021-10-07 15:44:39,223 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 1940.5ms TimeCoverageRelationStatistics Valid=161, Invalid=345, Unknown=0, NotChecked=0, Total=506 [2021-10-07 15:44:39,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2021-10-07 15:44:39,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 354. [2021-10-07 15:44:39,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 353 states have (on average 3.461756373937677) internal successors, (1222), 353 states have internal predecessors, (1222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:44:39,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 1222 transitions. [2021-10-07 15:44:39,241 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 1222 transitions. Word has length 20 [2021-10-07 15:44:39,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:44:39,241 INFO L470 AbstractCegarLoop]: Abstraction has 354 states and 1222 transitions. [2021-10-07 15:44:39,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:44:39,242 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 1222 transitions. [2021-10-07 15:44:39,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:44:39,243 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:44:39,243 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] [2021-10-07 15:44:39,256 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Ended with exit code 0 [2021-10-07 15:44:39,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:44:39,457 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:44:39,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:44:39,458 INFO L82 PathProgramCache]: Analyzing trace with hash 1696368881, now seen corresponding path program 8 times [2021-10-07 15:44:39,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:44:39,458 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2099676890] [2021-10-07 15:44:39,459 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:44:39,459 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:44:39,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:44:39,461 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:44:39,461 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-10-07 15:44:39,732 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:44:39,732 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:44:39,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:44:39,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:44:39,917 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:39,917 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:44:40,340 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:40,340 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:44:40,340 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2099676890] [2021-10-07 15:44:40,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2099676890] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:44:40,341 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:44:40,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-10-07 15:44:40,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92206946] [2021-10-07 15:44:40,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 15:44:40,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:44:40,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 15:44:40,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:44:40,342 INFO L87 Difference]: Start difference. First operand 354 states and 1222 transitions. Second operand has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:44:44,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:44:44,545 INFO L93 Difference]: Finished difference Result 958 states and 2883 transitions. [2021-10-07 15:44:44,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-07 15:44:44,547 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:44:44,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:44:44,554 INFO L225 Difference]: With dead ends: 958 [2021-10-07 15:44:44,554 INFO L226 Difference]: Without dead ends: 954 [2021-10-07 15:44:44,554 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 1055.5ms TimeCoverageRelationStatistics Valid=156, Invalid=396, Unknown=0, NotChecked=0, Total=552 [2021-10-07 15:44:44,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 954 states. [2021-10-07 15:44:44,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 954 to 380. [2021-10-07 15:44:44,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 379 states have (on average 3.6226912928759893) internal successors, (1373), 379 states have internal predecessors, (1373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:44:44,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 1373 transitions. [2021-10-07 15:44:44,591 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 1373 transitions. Word has length 20 [2021-10-07 15:44:44,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:44:44,591 INFO L470 AbstractCegarLoop]: Abstraction has 380 states and 1373 transitions. [2021-10-07 15:44:44,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:44:44,591 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 1373 transitions. [2021-10-07 15:44:44,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:44:44,593 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:44:44,593 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] [2021-10-07 15:44:44,607 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-10-07 15:44:44,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:44:44,807 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:44:44,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:44:44,809 INFO L82 PathProgramCache]: Analyzing trace with hash 1983399665, now seen corresponding path program 9 times [2021-10-07 15:44:44,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:44:44,810 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1774812156] [2021-10-07 15:44:44,810 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:44:44,810 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:44:44,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:44:44,811 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:44:44,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-10-07 15:44:45,117 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 15:44:45,118 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:44:45,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:44:45,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:44:45,396 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:45,397 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:44:45,893 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:45,894 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:44:45,894 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1774812156] [2021-10-07 15:44:45,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1774812156] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:44:45,894 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:44:45,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-10-07 15:44:45,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786798066] [2021-10-07 15:44:45,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 15:44:45,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:44:45,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 15:44:45,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:44:45,896 INFO L87 Difference]: Start difference. First operand 380 states and 1373 transitions. Second operand has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:44:52,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:44:52,195 INFO L93 Difference]: Finished difference Result 914 states and 2808 transitions. [2021-10-07 15:44:52,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-07 15:44:52,196 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:44:52,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:44:52,203 INFO L225 Difference]: With dead ends: 914 [2021-10-07 15:44:52,203 INFO L226 Difference]: Without dead ends: 914 [2021-10-07 15:44:52,203 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 1152.2ms TimeCoverageRelationStatistics Valid=192, Invalid=408, Unknown=0, NotChecked=0, Total=600 [2021-10-07 15:44:52,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 914 states. [2021-10-07 15:44:52,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 914 to 380. [2021-10-07 15:44:52,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 379 states have (on average 3.612137203166227) internal successors, (1369), 379 states have internal predecessors, (1369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:44:52,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 1369 transitions. [2021-10-07 15:44:52,225 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 1369 transitions. Word has length 20 [2021-10-07 15:44:52,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:44:52,225 INFO L470 AbstractCegarLoop]: Abstraction has 380 states and 1369 transitions. [2021-10-07 15:44:52,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:44:52,225 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 1369 transitions. [2021-10-07 15:44:52,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:44:52,227 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:44:52,227 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] [2021-10-07 15:44:52,240 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Ended with exit code 0 [2021-10-07 15:44:52,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:44:52,441 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:44:52,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:44:52,442 INFO L82 PathProgramCache]: Analyzing trace with hash 1691117329, now seen corresponding path program 10 times [2021-10-07 15:44:52,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:44:52,442 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1329853639] [2021-10-07 15:44:52,443 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:44:52,443 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:44:52,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:44:52,444 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:44:52,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-10-07 15:44:52,715 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:44:52,715 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:44:52,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:44:52,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:44:52,928 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:52,929 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:44:53,592 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:53,593 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:44:53,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1329853639] [2021-10-07 15:44:53,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1329853639] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:44:53,593 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:44:53,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-10-07 15:44:53,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697202270] [2021-10-07 15:44:53,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 15:44:53,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:44:53,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 15:44:53,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:44:53,596 INFO L87 Difference]: Start difference. First operand 380 states and 1369 transitions. Second operand has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:44:56,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:44:56,032 INFO L93 Difference]: Finished difference Result 776 states and 2419 transitions. [2021-10-07 15:44:56,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-07 15:44:56,034 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:44:56,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:44:56,040 INFO L225 Difference]: With dead ends: 776 [2021-10-07 15:44:56,040 INFO L226 Difference]: Without dead ends: 772 [2021-10-07 15:44:56,041 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 1159.4ms TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2021-10-07 15:44:56,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2021-10-07 15:44:56,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 398. [2021-10-07 15:44:56,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 397 states have (on average 3.652392947103275) internal successors, (1450), 397 states have internal predecessors, (1450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:44:56,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 1450 transitions. [2021-10-07 15:44:56,059 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 1450 transitions. Word has length 20 [2021-10-07 15:44:56,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:44:56,060 INFO L470 AbstractCegarLoop]: Abstraction has 398 states and 1450 transitions. [2021-10-07 15:44:56,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:44:56,060 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 1450 transitions. [2021-10-07 15:44:56,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:44:56,062 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:44:56,062 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] [2021-10-07 15:44:56,075 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-10-07 15:44:56,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:44:56,276 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:44:56,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:44:56,276 INFO L82 PathProgramCache]: Analyzing trace with hash -2100823819, now seen corresponding path program 5 times [2021-10-07 15:44:56,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:44:56,277 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [376176287] [2021-10-07 15:44:56,277 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:44:56,277 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:44:56,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:44:56,278 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:44:56,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-10-07 15:44:56,535 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:44:56,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:44:56,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:44:56,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:44:56,794 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:56,794 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:44:59,969 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:44:59,969 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:44:59,969 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [376176287] [2021-10-07 15:44:59,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [376176287] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:44:59,970 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:44:59,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-10-07 15:44:59,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277150497] [2021-10-07 15:44:59,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:44:59,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:44:59,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:44:59,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=137, Unknown=1, NotChecked=0, Total=182 [2021-10-07 15:44:59,972 INFO L87 Difference]: Start difference. First operand 398 states and 1450 transitions. Second operand has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:45:17,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:45:17,135 INFO L93 Difference]: Finished difference Result 1048 states and 3153 transitions. [2021-10-07 15:45:17,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-07 15:45:17,138 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:45:17,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:45:17,145 INFO L225 Difference]: With dead ends: 1048 [2021-10-07 15:45:17,146 INFO L226 Difference]: Without dead ends: 1048 [2021-10-07 15:45:17,146 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 5731.1ms TimeCoverageRelationStatistics Valid=296, Invalid=825, Unknown=1, NotChecked=0, Total=1122 [2021-10-07 15:45:17,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1048 states. [2021-10-07 15:45:17,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1048 to 436. [2021-10-07 15:45:17,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 435 states have (on average 3.7287356321839082) internal successors, (1622), 435 states have internal predecessors, (1622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:45:17,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 1622 transitions. [2021-10-07 15:45:17,171 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 1622 transitions. Word has length 20 [2021-10-07 15:45:17,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:45:17,171 INFO L470 AbstractCegarLoop]: Abstraction has 436 states and 1622 transitions. [2021-10-07 15:45:17,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:45:17,171 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 1622 transitions. [2021-10-07 15:45:17,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:45:17,173 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:45:17,173 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] [2021-10-07 15:45:17,186 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Ended with exit code 0 [2021-10-07 15:45:17,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:45:17,387 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:45:17,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:45:17,387 INFO L82 PathProgramCache]: Analyzing trace with hash -1912160851, now seen corresponding path program 11 times [2021-10-07 15:45:17,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:45:17,388 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1031917152] [2021-10-07 15:45:17,388 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:45:17,389 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:45:17,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:45:17,390 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:45:17,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-10-07 15:45:17,621 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:45:17,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:45:17,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:45:17,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:45:17,795 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:45:17,795 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:45:18,579 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:45:18,579 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:45:18,580 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1031917152] [2021-10-07 15:45:18,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1031917152] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-07 15:45:18,580 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:45:18,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 12 [2021-10-07 15:45:18,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046056440] [2021-10-07 15:45:18,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-07 15:45:18,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:45:18,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-07 15:45:18,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:45:18,582 INFO L87 Difference]: Start difference. First operand 436 states and 1622 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:45:18,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:45:18,854 INFO L93 Difference]: Finished difference Result 568 states and 2000 transitions. [2021-10-07 15:45:18,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-07 15:45:18,854 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:45:18,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:45:18,858 INFO L225 Difference]: With dead ends: 568 [2021-10-07 15:45:18,858 INFO L226 Difference]: Without dead ends: 562 [2021-10-07 15:45:18,858 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 534.0ms TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:45:18,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2021-10-07 15:45:18,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 436. [2021-10-07 15:45:18,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 435 states have (on average 3.7195402298850575) internal successors, (1618), 435 states have internal predecessors, (1618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:45:18,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 1618 transitions. [2021-10-07 15:45:18,874 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 1618 transitions. Word has length 20 [2021-10-07 15:45:18,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:45:18,874 INFO L470 AbstractCegarLoop]: Abstraction has 436 states and 1618 transitions. [2021-10-07 15:45:18,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:45:18,874 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 1618 transitions. [2021-10-07 15:45:18,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:45:18,876 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:45:18,876 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] [2021-10-07 15:45:18,890 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Ended with exit code 0 [2021-10-07 15:45:19,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:45:19,090 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:45:19,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:45:19,091 INFO L82 PathProgramCache]: Analyzing trace with hash 53224269, now seen corresponding path program 6 times [2021-10-07 15:45:19,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:45:19,092 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [216988971] [2021-10-07 15:45:19,093 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:45:19,093 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:45:19,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:45:19,094 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:45:19,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-10-07 15:45:19,418 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-07 15:45:19,419 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:45:19,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:45:19,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:45:19,649 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:45:19,650 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:45:22,737 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:45:22,738 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:45:22,738 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [216988971] [2021-10-07 15:45:22,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [216988971] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:45:22,738 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:45:22,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-10-07 15:45:22,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372428913] [2021-10-07 15:45:22,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:45:22,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:45:22,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:45:22,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=134, Unknown=1, NotChecked=0, Total=182 [2021-10-07 15:45:22,739 INFO L87 Difference]: Start difference. First operand 436 states and 1618 transitions. Second operand has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:45:38,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:45:38,195 INFO L93 Difference]: Finished difference Result 1168 states and 3558 transitions. [2021-10-07 15:45:38,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-07 15:45:38,198 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:45:38,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:45:38,220 INFO L225 Difference]: With dead ends: 1168 [2021-10-07 15:45:38,220 INFO L226 Difference]: Without dead ends: 1168 [2021-10-07 15:45:38,221 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 7371.6ms TimeCoverageRelationStatistics Valid=259, Invalid=670, Unknown=1, NotChecked=0, Total=930 [2021-10-07 15:45:38,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2021-10-07 15:45:38,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 444. [2021-10-07 15:45:38,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 443 states have (on average 3.785553047404063) internal successors, (1677), 443 states have internal predecessors, (1677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:45:38,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 1677 transitions. [2021-10-07 15:45:38,250 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 1677 transitions. Word has length 20 [2021-10-07 15:45:38,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:45:38,251 INFO L470 AbstractCegarLoop]: Abstraction has 444 states and 1677 transitions. [2021-10-07 15:45:38,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:45:38,251 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 1677 transitions. [2021-10-07 15:45:38,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:45:38,253 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:45:38,253 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] [2021-10-07 15:45:38,271 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-10-07 15:45:38,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:45:38,466 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:45:38,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:45:38,467 INFO L82 PathProgramCache]: Analyzing trace with hash -1781517933, now seen corresponding path program 6 times [2021-10-07 15:45:38,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:45:38,468 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1837971888] [2021-10-07 15:45:38,468 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:45:38,468 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:45:38,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:45:38,470 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:45:38,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-10-07 15:45:38,904 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-07 15:45:38,904 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:45:38,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:45:38,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:45:39,179 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:45:39,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:45:39,730 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:45:39,731 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:45:39,731 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1837971888] [2021-10-07 15:45:39,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1837971888] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-07 15:45:39,731 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:45:39,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-10-07 15:45:39,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601752354] [2021-10-07 15:45:39,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-07 15:45:39,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:45:39,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-07 15:45:39,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:45:39,733 INFO L87 Difference]: Start difference. First operand 444 states and 1677 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:45:40,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:45:40,100 INFO L93 Difference]: Finished difference Result 576 states and 2066 transitions. [2021-10-07 15:45:40,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-07 15:45:40,102 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:45:40,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:45:40,105 INFO L225 Difference]: With dead ends: 576 [2021-10-07 15:45:40,105 INFO L226 Difference]: Without dead ends: 574 [2021-10-07 15:45:40,106 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 540.7ms TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2021-10-07 15:45:40,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2021-10-07 15:45:40,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 446. [2021-10-07 15:45:40,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 445 states have (on average 3.7797752808988765) internal successors, (1682), 445 states have internal predecessors, (1682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:45:40,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 1682 transitions. [2021-10-07 15:45:40,122 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 1682 transitions. Word has length 20 [2021-10-07 15:45:40,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:45:40,122 INFO L470 AbstractCegarLoop]: Abstraction has 446 states and 1682 transitions. [2021-10-07 15:45:40,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:45:40,123 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 1682 transitions. [2021-10-07 15:45:40,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:45:40,124 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:45:40,124 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] [2021-10-07 15:45:40,137 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2021-10-07 15:45:40,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:45:40,338 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:45:40,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:45:40,338 INFO L82 PathProgramCache]: Analyzing trace with hash 213358635, now seen corresponding path program 7 times [2021-10-07 15:45:40,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:45:40,339 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [358040694] [2021-10-07 15:45:40,339 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:45:40,340 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:45:40,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:45:40,341 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:45:40,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-10-07 15:45:40,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:45:40,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:45:40,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:45:40,937 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:45:40,937 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:45:41,533 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:45:41,533 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:45:41,534 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [358040694] [2021-10-07 15:45:41,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [358040694] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:45:41,534 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:45:41,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2021-10-07 15:45:41,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044382046] [2021-10-07 15:45:41,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 15:45:41,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:45:41,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 15:45:41,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:45:41,536 INFO L87 Difference]: Start difference. First operand 446 states and 1682 transitions. Second operand has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:45:50,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:45:50,409 INFO L93 Difference]: Finished difference Result 1130 states and 3545 transitions. [2021-10-07 15:45:50,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-07 15:45:50,410 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:45:50,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:45:50,415 INFO L225 Difference]: With dead ends: 1130 [2021-10-07 15:45:50,415 INFO L226 Difference]: Without dead ends: 1130 [2021-10-07 15:45:50,416 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 2398.7ms TimeCoverageRelationStatistics Valid=213, Invalid=717, Unknown=0, NotChecked=0, Total=930 [2021-10-07 15:45:50,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1130 states. [2021-10-07 15:45:50,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1130 to 446. [2021-10-07 15:45:50,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 445 states have (on average 3.797752808988764) internal successors, (1690), 445 states have internal predecessors, (1690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:45:50,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 1690 transitions. [2021-10-07 15:45:50,441 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 1690 transitions. Word has length 20 [2021-10-07 15:45:50,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:45:50,442 INFO L470 AbstractCegarLoop]: Abstraction has 446 states and 1690 transitions. [2021-10-07 15:45:50,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:45:50,442 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 1690 transitions. [2021-10-07 15:45:50,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:45:50,444 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:45:50,444 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] [2021-10-07 15:45:50,458 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2021-10-07 15:45:50,657 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:45:50,658 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:45:50,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:45:50,659 INFO L82 PathProgramCache]: Analyzing trace with hash 200732205, now seen corresponding path program 12 times [2021-10-07 15:45:50,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:45:50,660 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [627269522] [2021-10-07 15:45:50,660 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:45:50,660 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:45:50,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:45:50,661 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:45:50,662 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-10-07 15:45:50,968 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-07 15:45:50,968 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:45:50,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:45:50,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:45:51,198 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:45:51,199 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:45:52,130 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:45:52,130 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:45:52,130 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [627269522] [2021-10-07 15:45:52,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [627269522] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-07 15:45:52,131 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:45:52,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 12 [2021-10-07 15:45:52,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031688937] [2021-10-07 15:45:52,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-07 15:45:52,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:45:52,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-07 15:45:52,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:45:52,132 INFO L87 Difference]: Start difference. First operand 446 states and 1690 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:45:52,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:45:52,347 INFO L93 Difference]: Finished difference Result 592 states and 2105 transitions. [2021-10-07 15:45:52,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-07 15:45:52,348 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:45:52,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:45:52,351 INFO L225 Difference]: With dead ends: 592 [2021-10-07 15:45:52,351 INFO L226 Difference]: Without dead ends: 592 [2021-10-07 15:45:52,351 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 700.0ms TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:45:52,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2021-10-07 15:45:52,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 450. [2021-10-07 15:45:52,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 449 states have (on average 3.799554565701559) internal successors, (1706), 449 states have internal predecessors, (1706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:45:52,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 1706 transitions. [2021-10-07 15:45:52,367 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 1706 transitions. Word has length 20 [2021-10-07 15:45:52,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:45:52,367 INFO L470 AbstractCegarLoop]: Abstraction has 450 states and 1706 transitions. [2021-10-07 15:45:52,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:45:52,368 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 1706 transitions. [2021-10-07 15:45:52,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:45:52,370 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:45:52,370 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] [2021-10-07 15:45:52,383 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2021-10-07 15:45:52,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:45:52,584 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:45:52,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:45:52,584 INFO L82 PathProgramCache]: Analyzing trace with hash 1170394125, now seen corresponding path program 13 times [2021-10-07 15:45:52,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:45:52,585 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [552473205] [2021-10-07 15:45:52,585 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:45:52,585 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:45:52,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:45:52,586 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:45:52,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-10-07 15:45:52,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:45:52,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-07 15:45:52,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:45:53,010 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:45:53,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:45:53,138 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:45:53,138 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:45:53,138 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [552473205] [2021-10-07 15:45:53,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [552473205] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:45:53,138 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:45:53,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 7 [2021-10-07 15:45:53,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415003518] [2021-10-07 15:45:53,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-07 15:45:53,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:45:53,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-07 15:45:53,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-07 15:45:53,140 INFO L87 Difference]: Start difference. First operand 450 states and 1706 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:45:53,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:45:53,413 INFO L93 Difference]: Finished difference Result 660 states and 2347 transitions. [2021-10-07 15:45:53,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-07 15:45:53,414 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:45:53,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:45:53,416 INFO L225 Difference]: With dead ends: 660 [2021-10-07 15:45:53,417 INFO L226 Difference]: Without dead ends: 646 [2021-10-07 15:45:53,417 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 126.1ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-07 15:45:53,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 646 states. [2021-10-07 15:45:53,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 646 to 464. [2021-10-07 15:45:53,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464 states, 463 states have (on average 3.8207343412526997) internal successors, (1769), 463 states have internal predecessors, (1769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:45:53,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 1769 transitions. [2021-10-07 15:45:53,430 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 1769 transitions. Word has length 20 [2021-10-07 15:45:53,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:45:53,431 INFO L470 AbstractCegarLoop]: Abstraction has 464 states and 1769 transitions. [2021-10-07 15:45:53,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:45:53,431 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 1769 transitions. [2021-10-07 15:45:53,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:45:53,433 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:45:53,433 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] [2021-10-07 15:45:53,449 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2021-10-07 15:45:53,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:45:53,647 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:45:53,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:45:53,648 INFO L82 PathProgramCache]: Analyzing trace with hash -1786769485, now seen corresponding path program 8 times [2021-10-07 15:45:53,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:45:53,649 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [165800566] [2021-10-07 15:45:53,649 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:45:53,649 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:45:53,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:45:53,650 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:45:53,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-10-07 15:45:54,017 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:45:54,017 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:45:54,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:45:54,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:45:54,264 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:45:54,264 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:45:55,506 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:45:55,506 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:45:55,507 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [165800566] [2021-10-07 15:45:55,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [165800566] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-07 15:45:55,507 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:45:55,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-10-07 15:45:55,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698623910] [2021-10-07 15:45:55,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-07 15:45:55,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:45:55,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-07 15:45:55,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:45:55,509 INFO L87 Difference]: Start difference. First operand 464 states and 1769 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:45:55,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:45:55,927 INFO L93 Difference]: Finished difference Result 586 states and 2135 transitions. [2021-10-07 15:45:55,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-07 15:45:55,928 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:45:55,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:45:55,930 INFO L225 Difference]: With dead ends: 586 [2021-10-07 15:45:55,930 INFO L226 Difference]: Without dead ends: 584 [2021-10-07 15:45:55,930 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1270.9ms TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2021-10-07 15:45:55,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2021-10-07 15:45:55,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 464. [2021-10-07 15:45:55,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464 states, 463 states have (on average 3.816414686825054) internal successors, (1767), 463 states have internal predecessors, (1767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:45:55,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 1767 transitions. [2021-10-07 15:45:55,946 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 1767 transitions. Word has length 20 [2021-10-07 15:45:55,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:45:55,946 INFO L470 AbstractCegarLoop]: Abstraction has 464 states and 1767 transitions. [2021-10-07 15:45:55,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:45:55,946 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 1767 transitions. [2021-10-07 15:45:55,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:45:55,948 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:45:55,948 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] [2021-10-07 15:45:55,961 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2021-10-07 15:45:56,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:45:56,162 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:45:56,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:45:56,163 INFO L82 PathProgramCache]: Analyzing trace with hash -479326165, now seen corresponding path program 9 times [2021-10-07 15:45:56,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:45:56,164 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1519812435] [2021-10-07 15:45:56,164 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:45:56,165 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:45:56,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:45:56,166 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:45:56,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2021-10-07 15:45:56,528 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 15:45:56,529 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:45:56,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:45:56,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:45:56,789 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:45:56,789 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:45:57,701 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:45:57,701 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:45:57,701 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1519812435] [2021-10-07 15:45:57,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1519812435] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:45:57,704 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:45:57,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2021-10-07 15:45:57,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732858425] [2021-10-07 15:45:57,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 15:45:57,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:45:57,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 15:45:57,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:45:57,708 INFO L87 Difference]: Start difference. First operand 464 states and 1767 transitions. Second operand has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:46:08,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:46:08,366 INFO L93 Difference]: Finished difference Result 832 states and 2803 transitions. [2021-10-07 15:46:08,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-07 15:46:08,368 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:46:08,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:46:08,370 INFO L225 Difference]: With dead ends: 832 [2021-10-07 15:46:08,370 INFO L226 Difference]: Without dead ends: 832 [2021-10-07 15:46:08,371 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 3394.9ms TimeCoverageRelationStatistics Valid=187, Invalid=515, Unknown=0, NotChecked=0, Total=702 [2021-10-07 15:46:08,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 832 states. [2021-10-07 15:46:08,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 832 to 470. [2021-10-07 15:46:08,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 469 states have (on average 3.8208955223880596) internal successors, (1792), 469 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:46:08,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 1792 transitions. [2021-10-07 15:46:08,387 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 1792 transitions. Word has length 20 [2021-10-07 15:46:08,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:46:08,388 INFO L470 AbstractCegarLoop]: Abstraction has 470 states and 1792 transitions. [2021-10-07 15:46:08,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:46:08,388 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 1792 transitions. [2021-10-07 15:46:08,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:46:08,390 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:46:08,390 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] [2021-10-07 15:46:08,401 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2021-10-07 15:46:08,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:46:08,591 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:46:08,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:46:08,592 INFO L82 PathProgramCache]: Analyzing trace with hash -960460377, now seen corresponding path program 10 times [2021-10-07 15:46:08,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:46:08,594 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [467269083] [2021-10-07 15:46:08,594 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:46:08,594 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:46:08,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:46:08,596 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:46:08,599 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2021-10-07 15:46:08,908 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:46:08,908 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:46:08,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:46:08,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:46:09,206 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:46:09,207 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:46:09,569 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:46:09,570 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:46:09,570 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [467269083] [2021-10-07 15:46:09,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [467269083] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-07 15:46:09,570 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:46:09,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2021-10-07 15:46:09,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528928154] [2021-10-07 15:46:09,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-07 15:46:09,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:46:09,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-07 15:46:09,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:46:09,572 INFO L87 Difference]: Start difference. First operand 470 states and 1792 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:46:10,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:46:10,167 INFO L93 Difference]: Finished difference Result 830 states and 2944 transitions. [2021-10-07 15:46:10,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-07 15:46:10,168 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:46:10,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:46:10,171 INFO L225 Difference]: With dead ends: 830 [2021-10-07 15:46:10,171 INFO L226 Difference]: Without dead ends: 830 [2021-10-07 15:46:10,172 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 548.7ms TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2021-10-07 15:46:10,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2021-10-07 15:46:10,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 468. [2021-10-07 15:46:10,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 468 states, 467 states have (on average 3.815845824411135) internal successors, (1782), 467 states have internal predecessors, (1782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:46:10,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 1782 transitions. [2021-10-07 15:46:10,199 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 1782 transitions. Word has length 20 [2021-10-07 15:46:10,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:46:10,200 INFO L470 AbstractCegarLoop]: Abstraction has 468 states and 1782 transitions. [2021-10-07 15:46:10,200 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:46:10,200 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 1782 transitions. [2021-10-07 15:46:10,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:46:10,202 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:46:10,202 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] [2021-10-07 15:46:10,218 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2021-10-07 15:46:10,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:46:10,416 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:46:10,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:46:10,417 INFO L82 PathProgramCache]: Analyzing trace with hash 25668397, now seen corresponding path program 11 times [2021-10-07 15:46:10,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:46:10,418 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [260718779] [2021-10-07 15:46:10,418 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:46:10,418 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:46:10,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:46:10,420 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:46:10,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2021-10-07 15:46:10,735 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:46:10,735 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:46:10,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:46:10,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:46:11,016 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:46:11,016 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:46:11,743 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:46:11,744 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:46:11,744 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [260718779] [2021-10-07 15:46:11,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [260718779] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-07 15:46:11,744 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:46:11,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2021-10-07 15:46:11,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255766132] [2021-10-07 15:46:11,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-07 15:46:11,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:46:11,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-07 15:46:11,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:46:11,746 INFO L87 Difference]: Start difference. First operand 468 states and 1782 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:46:12,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:46:12,853 INFO L93 Difference]: Finished difference Result 672 states and 2434 transitions. [2021-10-07 15:46:12,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-07 15:46:12,854 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:46:12,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:46:12,856 INFO L225 Difference]: With dead ends: 672 [2021-10-07 15:46:12,856 INFO L226 Difference]: Without dead ends: 672 [2021-10-07 15:46:12,856 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 859.5ms TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:46:12,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2021-10-07 15:46:12,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 472. [2021-10-07 15:46:12,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 472 states, 471 states have (on average 3.8322717622080678) internal successors, (1805), 471 states have internal predecessors, (1805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:46:12,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 1805 transitions. [2021-10-07 15:46:12,868 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 1805 transitions. Word has length 20 [2021-10-07 15:46:12,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:46:12,869 INFO L470 AbstractCegarLoop]: Abstraction has 472 states and 1805 transitions. [2021-10-07 15:46:12,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:46:12,869 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 1805 transitions. [2021-10-07 15:46:12,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:46:12,870 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:46:12,870 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] [2021-10-07 15:46:12,880 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Ended with exit code 0 [2021-10-07 15:46:13,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:46:13,071 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:46:13,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:46:13,072 INFO L82 PathProgramCache]: Analyzing trace with hash -490013813, now seen corresponding path program 12 times [2021-10-07 15:46:13,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:46:13,073 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [22492926] [2021-10-07 15:46:13,073 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:46:13,073 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:46:13,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:46:13,075 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:46:13,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2021-10-07 15:46:13,468 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-07 15:46:13,468 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:46:13,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:46:13,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:46:13,722 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:46:13,723 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:46:14,435 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:46:14,435 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:46:14,436 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [22492926] [2021-10-07 15:46:14,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [22492926] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-07 15:46:14,436 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:46:14,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2021-10-07 15:46:14,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961313209] [2021-10-07 15:46:14,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-07 15:46:14,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:46:14,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-07 15:46:14,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:46:14,437 INFO L87 Difference]: Start difference. First operand 472 states and 1805 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:46:15,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:46:15,558 INFO L93 Difference]: Finished difference Result 646 states and 2368 transitions. [2021-10-07 15:46:15,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-07 15:46:15,559 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:46:15,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:46:15,562 INFO L225 Difference]: With dead ends: 646 [2021-10-07 15:46:15,562 INFO L226 Difference]: Without dead ends: 646 [2021-10-07 15:46:15,562 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 784.1ms TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:46:15,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 646 states. [2021-10-07 15:46:15,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 646 to 456. [2021-10-07 15:46:15,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 455 states have (on average 3.7824175824175823) internal successors, (1721), 455 states have internal predecessors, (1721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:46:15,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 1721 transitions. [2021-10-07 15:46:15,579 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 1721 transitions. Word has length 20 [2021-10-07 15:46:15,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:46:15,579 INFO L470 AbstractCegarLoop]: Abstraction has 456 states and 1721 transitions. [2021-10-07 15:46:15,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:46:15,579 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 1721 transitions. [2021-10-07 15:46:15,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:46:15,581 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:46:15,581 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] [2021-10-07 15:46:15,595 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2021-10-07 15:46:15,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:46:15,795 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:46:15,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:46:15,795 INFO L82 PathProgramCache]: Analyzing trace with hash -1582003737, now seen corresponding path program 13 times [2021-10-07 15:46:15,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:46:15,796 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2077124213] [2021-10-07 15:46:15,796 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:46:15,796 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:46:15,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:46:15,797 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:46:15,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2021-10-07 15:46:16,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:46:16,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:46:16,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:46:16,475 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:46:16,475 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:46:17,241 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:46:17,242 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:46:17,242 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2077124213] [2021-10-07 15:46:17,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2077124213] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-07 15:46:17,242 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:46:17,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2021-10-07 15:46:17,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299339925] [2021-10-07 15:46:17,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-07 15:46:17,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:46:17,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-07 15:46:17,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:46:17,244 INFO L87 Difference]: Start difference. First operand 456 states and 1721 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:46:18,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:46:18,165 INFO L93 Difference]: Finished difference Result 654 states and 2344 transitions. [2021-10-07 15:46:18,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-07 15:46:18,166 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:46:18,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:46:18,168 INFO L225 Difference]: With dead ends: 654 [2021-10-07 15:46:18,168 INFO L226 Difference]: Without dead ends: 654 [2021-10-07 15:46:18,168 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 921.8ms TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:46:18,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654 states. [2021-10-07 15:46:18,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 468. [2021-10-07 15:46:18,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 468 states, 467 states have (on average 3.8029978586723767) internal successors, (1776), 467 states have internal predecessors, (1776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:46:18,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 1776 transitions. [2021-10-07 15:46:18,180 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 1776 transitions. Word has length 20 [2021-10-07 15:46:18,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:46:18,180 INFO L470 AbstractCegarLoop]: Abstraction has 468 states and 1776 transitions. [2021-10-07 15:46:18,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:46:18,180 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 1776 transitions. [2021-10-07 15:46:18,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:46:18,181 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:46:18,181 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] [2021-10-07 15:46:18,191 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Ended with exit code 0 [2021-10-07 15:46:18,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:46:18,382 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:46:18,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:46:18,383 INFO L82 PathProgramCache]: Analyzing trace with hash -2097685947, now seen corresponding path program 14 times [2021-10-07 15:46:18,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:46:18,384 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [582831092] [2021-10-07 15:46:18,384 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:46:18,385 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:46:18,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:46:18,386 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:46:18,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2021-10-07 15:46:18,807 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:46:18,808 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:46:18,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:46:18,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:46:19,097 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:46:19,097 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:46:19,982 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:46:19,983 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:46:19,983 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [582831092] [2021-10-07 15:46:19,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [582831092] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-07 15:46:19,983 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:46:19,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2021-10-07 15:46:19,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582684673] [2021-10-07 15:46:19,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-07 15:46:19,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:46:19,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-07 15:46:19,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:46:19,985 INFO L87 Difference]: Start difference. First operand 468 states and 1776 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:46:20,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:46:20,947 INFO L93 Difference]: Finished difference Result 662 states and 2362 transitions. [2021-10-07 15:46:20,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-07 15:46:20,949 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:46:20,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:46:20,951 INFO L225 Difference]: With dead ends: 662 [2021-10-07 15:46:20,951 INFO L226 Difference]: Without dead ends: 662 [2021-10-07 15:46:20,951 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 954.7ms TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:46:20,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2021-10-07 15:46:20,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 466. [2021-10-07 15:46:20,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 466 states, 465 states have (on average 3.7913978494623657) internal successors, (1763), 465 states have internal predecessors, (1763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:46:20,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 1763 transitions. [2021-10-07 15:46:20,964 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 1763 transitions. Word has length 20 [2021-10-07 15:46:20,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:46:20,964 INFO L470 AbstractCegarLoop]: Abstraction has 466 states and 1763 transitions. [2021-10-07 15:46:20,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:46:20,964 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 1763 transitions. [2021-10-07 15:46:20,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:46:20,966 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:46:20,966 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] [2021-10-07 15:46:20,979 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2021-10-07 15:46:21,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:46:21,180 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:46:21,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:46:21,181 INFO L82 PathProgramCache]: Analyzing trace with hash -389451223, now seen corresponding path program 15 times [2021-10-07 15:46:21,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:46:21,182 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [880102875] [2021-10-07 15:46:21,182 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:46:21,182 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:46:21,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:46:21,184 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:46:21,185 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2021-10-07 15:46:21,679 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 15:46:21,679 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:46:21,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:46:21,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:46:21,992 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:46:21,992 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:46:22,334 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:46:22,334 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:46:22,334 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [880102875] [2021-10-07 15:46:22,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [880102875] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-07 15:46:22,335 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:46:22,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2021-10-07 15:46:22,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573577616] [2021-10-07 15:46:22,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-07 15:46:22,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:46:22,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-07 15:46:22,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:46:22,337 INFO L87 Difference]: Start difference. First operand 466 states and 1763 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:46:23,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:46:23,172 INFO L93 Difference]: Finished difference Result 786 states and 2754 transitions. [2021-10-07 15:46:23,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-07 15:46:23,173 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:46:23,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:46:23,177 INFO L225 Difference]: With dead ends: 786 [2021-10-07 15:46:23,178 INFO L226 Difference]: Without dead ends: 786 [2021-10-07 15:46:23,178 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 580.6ms TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2021-10-07 15:46:23,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 786 states. [2021-10-07 15:46:23,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 786 to 470. [2021-10-07 15:46:23,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 469 states have (on average 3.786780383795309) internal successors, (1776), 469 states have internal predecessors, (1776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:46:23,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 1776 transitions. [2021-10-07 15:46:23,196 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 1776 transitions. Word has length 20 [2021-10-07 15:46:23,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:46:23,196 INFO L470 AbstractCegarLoop]: Abstraction has 470 states and 1776 transitions. [2021-10-07 15:46:23,197 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:46:23,197 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 1776 transitions. [2021-10-07 15:46:23,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:46:23,198 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:46:23,199 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] [2021-10-07 15:46:23,213 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2021-10-07 15:46:23,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:46:23,412 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:46:23,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:46:23,412 INFO L82 PathProgramCache]: Analyzing trace with hash -598023483, now seen corresponding path program 14 times [2021-10-07 15:46:23,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:46:23,413 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1340921066] [2021-10-07 15:46:23,413 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:46:23,413 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:46:23,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:46:23,414 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:46:23,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2021-10-07 15:46:23,845 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:46:23,845 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:46:23,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:46:23,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:46:24,120 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:46:24,120 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:46:24,580 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:46:24,581 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:46:24,581 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1340921066] [2021-10-07 15:46:24,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1340921066] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:46:24,581 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:46:24,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-10-07 15:46:24,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320594458] [2021-10-07 15:46:24,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:46:24,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:46:24,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:46:24,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:46:24,583 INFO L87 Difference]: Start difference. First operand 470 states and 1776 transitions. Second operand has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:46:25,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:46:25,850 INFO L93 Difference]: Finished difference Result 780 states and 2608 transitions. [2021-10-07 15:46:25,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-07 15:46:25,851 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:46:25,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:46:25,853 INFO L225 Difference]: With dead ends: 780 [2021-10-07 15:46:25,853 INFO L226 Difference]: Without dead ends: 780 [2021-10-07 15:46:25,853 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 746.2ms TimeCoverageRelationStatistics Valid=112, Invalid=268, Unknown=0, NotChecked=0, Total=380 [2021-10-07 15:46:25,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2021-10-07 15:46:25,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 484. [2021-10-07 15:46:25,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 483 states have (on average 3.782608695652174) internal successors, (1827), 483 states have internal predecessors, (1827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:46:25,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 1827 transitions. [2021-10-07 15:46:25,866 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 1827 transitions. Word has length 20 [2021-10-07 15:46:25,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:46:25,867 INFO L470 AbstractCegarLoop]: Abstraction has 484 states and 1827 transitions. [2021-10-07 15:46:25,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:46:25,867 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 1827 transitions. [2021-10-07 15:46:25,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:46:25,869 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:46:25,869 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] [2021-10-07 15:46:25,882 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2021-10-07 15:46:26,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:46:26,071 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:46:26,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:46:26,072 INFO L82 PathProgramCache]: Analyzing trace with hash 1202976017, now seen corresponding path program 15 times [2021-10-07 15:46:26,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:46:26,073 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1608951391] [2021-10-07 15:46:26,073 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:46:26,074 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:46:26,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:46:26,074 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:46:26,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2021-10-07 15:46:26,504 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 15:46:26,505 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:46:26,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-07 15:46:26,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:46:26,650 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:46:26,651 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:46:26,780 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:46:26,780 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:46:26,780 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1608951391] [2021-10-07 15:46:26,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1608951391] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:46:26,781 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:46:26,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 7 [2021-10-07 15:46:26,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995290833] [2021-10-07 15:46:26,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-07 15:46:26,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:46:26,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-07 15:46:26,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-07 15:46:26,783 INFO L87 Difference]: Start difference. First operand 484 states and 1827 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:46:27,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:46:27,044 INFO L93 Difference]: Finished difference Result 668 states and 2314 transitions. [2021-10-07 15:46:27,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-07 15:46:27,045 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:46:27,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:46:27,048 INFO L225 Difference]: With dead ends: 668 [2021-10-07 15:46:27,048 INFO L226 Difference]: Without dead ends: 654 [2021-10-07 15:46:27,048 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 122.9ms TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-10-07 15:46:27,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654 states. [2021-10-07 15:46:27,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 480. [2021-10-07 15:46:27,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 480 states, 479 states have (on average 3.7453027139874737) internal successors, (1794), 479 states have internal predecessors, (1794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:46:27,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 1794 transitions. [2021-10-07 15:46:27,067 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 1794 transitions. Word has length 20 [2021-10-07 15:46:27,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:46:27,067 INFO L470 AbstractCegarLoop]: Abstraction has 480 states and 1794 transitions. [2021-10-07 15:46:27,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:46:27,067 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 1794 transitions. [2021-10-07 15:46:27,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:46:27,069 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:46:27,069 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] [2021-10-07 15:46:27,083 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Forceful destruction successful, exit code 0 [2021-10-07 15:46:27,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:46:27,283 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:46:27,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:46:27,284 INFO L82 PathProgramCache]: Analyzing trace with hash 2076214169, now seen corresponding path program 7 times [2021-10-07 15:46:27,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:46:27,284 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1570082722] [2021-10-07 15:46:27,285 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:46:27,285 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:46:27,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:46:27,286 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:46:27,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2021-10-07 15:46:27,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:46:27,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:46:27,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:46:27,950 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:46:27,950 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:46:29,020 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:46:29,020 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:46:29,020 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1570082722] [2021-10-07 15:46:29,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1570082722] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-07 15:46:29,020 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:46:29,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2021-10-07 15:46:29,021 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845059994] [2021-10-07 15:46:29,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-07 15:46:29,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:46:29,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-07 15:46:29,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:46:29,022 INFO L87 Difference]: Start difference. First operand 480 states and 1794 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:46:29,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:46:29,403 INFO L93 Difference]: Finished difference Result 718 states and 2517 transitions. [2021-10-07 15:46:29,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-07 15:46:29,403 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:46:29,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:46:29,405 INFO L225 Difference]: With dead ends: 718 [2021-10-07 15:46:29,405 INFO L226 Difference]: Without dead ends: 718 [2021-10-07 15:46:29,406 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 776.7ms TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:46:29,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2021-10-07 15:46:29,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 480. [2021-10-07 15:46:29,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 480 states, 479 states have (on average 3.7453027139874737) internal successors, (1794), 479 states have internal predecessors, (1794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:46:29,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 1794 transitions. [2021-10-07 15:46:29,419 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 1794 transitions. Word has length 20 [2021-10-07 15:46:29,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:46:29,419 INFO L470 AbstractCegarLoop]: Abstraction has 480 states and 1794 transitions. [2021-10-07 15:46:29,419 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:46:29,420 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 1794 transitions. [2021-10-07 15:46:29,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:46:29,421 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:46:29,421 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] [2021-10-07 15:46:29,436 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Ended with exit code 0 [2021-10-07 15:46:29,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:46:29,635 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:46:29,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:46:29,636 INFO L82 PathProgramCache]: Analyzing trace with hash -384102715, now seen corresponding path program 16 times [2021-10-07 15:46:29,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:46:29,636 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [538559853] [2021-10-07 15:46:29,637 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:46:29,637 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:46:29,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:46:29,639 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:46:29,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2021-10-07 15:46:30,046 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:46:30,046 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:46:30,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:46:30,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:46:30,339 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:46:30,339 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:46:30,936 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:46:30,936 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:46:30,936 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [538559853] [2021-10-07 15:46:30,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [538559853] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:46:30,936 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:46:30,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-10-07 15:46:30,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784584263] [2021-10-07 15:46:30,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:46:30,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:46:30,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:46:30,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:46:30,938 INFO L87 Difference]: Start difference. First operand 480 states and 1794 transitions. Second operand has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:46:35,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:46:35,077 INFO L93 Difference]: Finished difference Result 978 states and 3202 transitions. [2021-10-07 15:46:35,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-07 15:46:35,078 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:46:35,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:46:35,080 INFO L225 Difference]: With dead ends: 978 [2021-10-07 15:46:35,081 INFO L226 Difference]: Without dead ends: 978 [2021-10-07 15:46:35,081 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 1316.2ms TimeCoverageRelationStatistics Valid=136, Invalid=284, Unknown=0, NotChecked=0, Total=420 [2021-10-07 15:46:35,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 978 states. [2021-10-07 15:46:35,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 978 to 492. [2021-10-07 15:46:35,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 491 states have (on average 3.8126272912423627) internal successors, (1872), 491 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:46:35,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 1872 transitions. [2021-10-07 15:46:35,101 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 1872 transitions. Word has length 20 [2021-10-07 15:46:35,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:46:35,102 INFO L470 AbstractCegarLoop]: Abstraction has 492 states and 1872 transitions. [2021-10-07 15:46:35,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:46:35,102 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 1872 transitions. [2021-10-07 15:46:35,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:46:35,104 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:46:35,104 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] [2021-10-07 15:46:35,119 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (47)] Forceful destruction successful, exit code 0 [2021-10-07 15:46:35,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:46:35,318 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:46:35,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:46:35,319 INFO L82 PathProgramCache]: Analyzing trace with hash -97071931, now seen corresponding path program 17 times [2021-10-07 15:46:35,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:46:35,319 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1330445116] [2021-10-07 15:46:35,320 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:46:35,320 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:46:35,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:46:35,321 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:46:35,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2021-10-07 15:46:35,704 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:46:35,705 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:46:35,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:46:35,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:46:36,050 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:46:36,050 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:46:37,009 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:46:37,010 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:46:37,010 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1330445116] [2021-10-07 15:46:37,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1330445116] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:46:37,010 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:46:37,010 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-10-07 15:46:37,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331209786] [2021-10-07 15:46:37,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:46:37,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:46:37,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:46:37,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:46:37,012 INFO L87 Difference]: Start difference. First operand 492 states and 1872 transitions. Second operand has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:46:43,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:46:43,082 INFO L93 Difference]: Finished difference Result 942 states and 3115 transitions. [2021-10-07 15:46:43,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-07 15:46:43,083 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:46:43,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:46:43,087 INFO L225 Difference]: With dead ends: 942 [2021-10-07 15:46:43,087 INFO L226 Difference]: Without dead ends: 942 [2021-10-07 15:46:43,088 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 1527.9ms TimeCoverageRelationStatistics Valid=200, Invalid=352, Unknown=0, NotChecked=0, Total=552 [2021-10-07 15:46:43,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 942 states. [2021-10-07 15:46:43,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 942 to 480. [2021-10-07 15:46:43,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 480 states, 479 states have (on average 3.7453027139874737) internal successors, (1794), 479 states have internal predecessors, (1794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:46:43,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 1794 transitions. [2021-10-07 15:46:43,111 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 1794 transitions. Word has length 20 [2021-10-07 15:46:43,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:46:43,112 INFO L470 AbstractCegarLoop]: Abstraction has 480 states and 1794 transitions. [2021-10-07 15:46:43,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:46:43,112 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 1794 transitions. [2021-10-07 15:46:43,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:46:43,114 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:46:43,114 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] [2021-10-07 15:46:43,129 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (48)] Ended with exit code 0 [2021-10-07 15:46:43,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:46:43,329 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:46:43,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:46:43,330 INFO L82 PathProgramCache]: Analyzing trace with hash 970762473, now seen corresponding path program 8 times [2021-10-07 15:46:43,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:46:43,331 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [826314232] [2021-10-07 15:46:43,331 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:46:43,332 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:46:43,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:46:43,332 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:46:43,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2021-10-07 15:46:43,773 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:46:43,773 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:46:43,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:46:43,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:46:43,994 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:46:43,994 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:46:49,044 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:46:49,044 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:46:49,045 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [826314232] [2021-10-07 15:46:49,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [826314232] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-07 15:46:49,045 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:46:49,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2021-10-07 15:46:49,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856312405] [2021-10-07 15:46:49,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-07 15:46:49,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:46:49,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-07 15:46:49,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=116, Unknown=2, NotChecked=0, Total=156 [2021-10-07 15:46:49,047 INFO L87 Difference]: Start difference. First operand 480 states and 1794 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:46:49,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:46:49,444 INFO L93 Difference]: Finished difference Result 624 states and 2222 transitions. [2021-10-07 15:46:49,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-07 15:46:49,445 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:46:49,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:46:49,447 INFO L225 Difference]: With dead ends: 624 [2021-10-07 15:46:49,447 INFO L226 Difference]: Without dead ends: 624 [2021-10-07 15:46:49,447 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 4656.9ms TimeCoverageRelationStatistics Valid=57, Invalid=151, Unknown=2, NotChecked=0, Total=210 [2021-10-07 15:46:49,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2021-10-07 15:46:49,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 476. [2021-10-07 15:46:49,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 476 states, 475 states have (on average 3.7536842105263157) internal successors, (1783), 475 states have internal predecessors, (1783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:46:49,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 1783 transitions. [2021-10-07 15:46:49,459 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 1783 transitions. Word has length 20 [2021-10-07 15:46:49,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:46:49,460 INFO L470 AbstractCegarLoop]: Abstraction has 476 states and 1783 transitions. [2021-10-07 15:46:49,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:46:49,460 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 1783 transitions. [2021-10-07 15:46:49,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:46:49,462 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:46:49,462 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] [2021-10-07 15:46:49,478 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (49)] Forceful destruction successful, exit code 0 [2021-10-07 15:46:49,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:46:49,676 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:46:49,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:46:49,677 INFO L82 PathProgramCache]: Analyzing trace with hash 432977767, now seen corresponding path program 16 times [2021-10-07 15:46:49,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:46:49,677 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [3736807] [2021-10-07 15:46:49,678 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:46:49,678 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:46:49,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:46:49,679 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:46:49,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2021-10-07 15:46:50,100 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:46:50,100 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:46:50,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:46:50,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:46:50,293 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:46:50,293 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:46:50,842 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:46:50,843 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:46:50,843 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [3736807] [2021-10-07 15:46:50,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [3736807] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-07 15:46:50,843 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:46:50,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-10-07 15:46:50,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239685085] [2021-10-07 15:46:50,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-07 15:46:50,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:46:50,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-07 15:46:50,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:46:50,847 INFO L87 Difference]: Start difference. First operand 476 states and 1783 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:46:51,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:46:51,379 INFO L93 Difference]: Finished difference Result 630 states and 2215 transitions. [2021-10-07 15:46:51,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-07 15:46:51,380 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:46:51,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:46:51,381 INFO L225 Difference]: With dead ends: 630 [2021-10-07 15:46:51,381 INFO L226 Difference]: Without dead ends: 628 [2021-10-07 15:46:51,382 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 562.1ms TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2021-10-07 15:46:51,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2021-10-07 15:46:51,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 478. [2021-10-07 15:46:51,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 478 states, 477 states have (on average 3.748427672955975) internal successors, (1788), 477 states have internal predecessors, (1788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:46:51,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 1788 transitions. [2021-10-07 15:46:51,393 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 1788 transitions. Word has length 20 [2021-10-07 15:46:51,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:46:51,393 INFO L470 AbstractCegarLoop]: Abstraction has 478 states and 1788 transitions. [2021-10-07 15:46:51,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:46:51,394 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 1788 transitions. [2021-10-07 15:46:51,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:46:51,395 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:46:51,395 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] [2021-10-07 15:46:51,405 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (50)] Ended with exit code 0 [2021-10-07 15:46:51,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:46:51,596 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:46:51,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:46:51,597 INFO L82 PathProgramCache]: Analyzing trace with hash -1867112961, now seen corresponding path program 17 times [2021-10-07 15:46:51,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:46:51,597 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [92102196] [2021-10-07 15:46:51,598 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:46:51,598 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:46:51,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:46:51,599 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:46:51,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2021-10-07 15:46:51,996 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:46:51,996 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:46:51,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:46:52,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:46:52,277 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:46:52,277 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:46:52,894 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:46:52,894 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:46:52,894 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [92102196] [2021-10-07 15:46:52,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [92102196] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:46:52,894 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:46:52,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2021-10-07 15:46:52,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733833217] [2021-10-07 15:46:52,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 15:46:52,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:46:52,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 15:46:52,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:46:52,896 INFO L87 Difference]: Start difference. First operand 478 states and 1788 transitions. Second operand has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:47:01,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:47:01,868 INFO L93 Difference]: Finished difference Result 1294 states and 4079 transitions. [2021-10-07 15:47:01,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-07 15:47:01,869 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:47:01,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:47:01,871 INFO L225 Difference]: With dead ends: 1294 [2021-10-07 15:47:01,871 INFO L226 Difference]: Without dead ends: 1294 [2021-10-07 15:47:01,872 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 2592.7ms TimeCoverageRelationStatistics Valid=236, Invalid=694, Unknown=0, NotChecked=0, Total=930 [2021-10-07 15:47:01,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1294 states. [2021-10-07 15:47:01,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1294 to 492. [2021-10-07 15:47:01,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 491 states have (on average 3.814663951120163) internal successors, (1873), 491 states have internal predecessors, (1873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:47:01,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 1873 transitions. [2021-10-07 15:47:01,892 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 1873 transitions. Word has length 20 [2021-10-07 15:47:01,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:47:01,892 INFO L470 AbstractCegarLoop]: Abstraction has 492 states and 1873 transitions. [2021-10-07 15:47:01,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:47:01,892 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 1873 transitions. [2021-10-07 15:47:01,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:47:01,894 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:47:01,894 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] [2021-10-07 15:47:01,905 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (51)] Forceful destruction successful, exit code 0 [2021-10-07 15:47:02,094 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:47:02,095 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:47:02,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:47:02,096 INFO L82 PathProgramCache]: Analyzing trace with hash -1879739391, now seen corresponding path program 18 times [2021-10-07 15:47:02,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:47:02,097 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [432562144] [2021-10-07 15:47:02,097 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:47:02,097 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:47:02,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:47:02,099 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:47:02,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2021-10-07 15:47:02,581 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-07 15:47:02,581 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:47:02,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:47:02,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:47:02,793 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:47:02,793 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:47:03,375 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:47:03,375 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:47:03,376 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [432562144] [2021-10-07 15:47:03,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [432562144] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-07 15:47:03,376 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:47:03,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 11 [2021-10-07 15:47:03,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075210388] [2021-10-07 15:47:03,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-07 15:47:03,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:47:03,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-07 15:47:03,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-10-07 15:47:03,378 INFO L87 Difference]: Start difference. First operand 492 states and 1873 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:47:03,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:47:03,807 INFO L93 Difference]: Finished difference Result 638 states and 2304 transitions. [2021-10-07 15:47:03,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-07 15:47:03,808 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:47:03,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:47:03,811 INFO L225 Difference]: With dead ends: 638 [2021-10-07 15:47:03,811 INFO L226 Difference]: Without dead ends: 638 [2021-10-07 15:47:03,811 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 449.0ms TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:47:03,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2021-10-07 15:47:03,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 494. [2021-10-07 15:47:03,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 494 states, 493 states have (on average 3.813387423935091) internal successors, (1880), 493 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:47:03,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 1880 transitions. [2021-10-07 15:47:03,825 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 1880 transitions. Word has length 20 [2021-10-07 15:47:03,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:47:03,825 INFO L470 AbstractCegarLoop]: Abstraction has 494 states and 1880 transitions. [2021-10-07 15:47:03,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:47:03,825 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 1880 transitions. [2021-10-07 15:47:03,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:47:03,827 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:47:03,828 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] [2021-10-07 15:47:03,843 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (52)] Forceful destruction successful, exit code 0 [2021-10-07 15:47:04,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:47:04,043 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:47:04,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:47:04,043 INFO L82 PathProgramCache]: Analyzing trace with hash 427726215, now seen corresponding path program 18 times [2021-10-07 15:47:04,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:47:04,044 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1064467337] [2021-10-07 15:47:04,044 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:47:04,045 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:47:04,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:47:04,046 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:47:04,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2021-10-07 15:47:04,957 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-07 15:47:04,957 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:47:04,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:47:04,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:47:05,238 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:47:05,239 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:47:06,099 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:47:06,099 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:47:06,099 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1064467337] [2021-10-07 15:47:06,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1064467337] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-07 15:47:06,100 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:47:06,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-10-07 15:47:06,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269002595] [2021-10-07 15:47:06,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-07 15:47:06,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:47:06,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-07 15:47:06,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:47:06,101 INFO L87 Difference]: Start difference. First operand 494 states and 1880 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:47:06,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:47:06,567 INFO L93 Difference]: Finished difference Result 634 states and 2292 transitions. [2021-10-07 15:47:06,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-07 15:47:06,568 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:47:06,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:47:06,569 INFO L225 Difference]: With dead ends: 634 [2021-10-07 15:47:06,570 INFO L226 Difference]: Without dead ends: 632 [2021-10-07 15:47:06,570 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 808.0ms TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2021-10-07 15:47:06,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2021-10-07 15:47:06,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 494. [2021-10-07 15:47:06,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 494 states, 493 states have (on average 3.8093306288032456) internal successors, (1878), 493 states have internal predecessors, (1878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:47:06,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 1878 transitions. [2021-10-07 15:47:06,581 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 1878 transitions. Word has length 20 [2021-10-07 15:47:06,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:47:06,581 INFO L470 AbstractCegarLoop]: Abstraction has 494 states and 1878 transitions. [2021-10-07 15:47:06,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:47:06,581 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 1878 transitions. [2021-10-07 15:47:06,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:47:06,582 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:47:06,582 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] [2021-10-07 15:47:06,593 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (53)] Forceful destruction successful, exit code 0 [2021-10-07 15:47:06,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:47:06,784 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:47:06,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:47:06,785 INFO L82 PathProgramCache]: Analyzing trace with hash 1735169535, now seen corresponding path program 19 times [2021-10-07 15:47:06,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:47:06,786 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1313154000] [2021-10-07 15:47:06,786 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:47:06,786 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:47:06,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:47:06,787 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:47:06,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2021-10-07 15:47:07,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:47:07,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:47:07,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:47:07,522 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:47:07,522 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:47:08,501 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:47:08,501 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:47:08,501 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1313154000] [2021-10-07 15:47:08,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1313154000] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:47:08,502 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:47:08,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2021-10-07 15:47:08,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68331457] [2021-10-07 15:47:08,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 15:47:08,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:47:08,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 15:47:08,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:47:08,503 INFO L87 Difference]: Start difference. First operand 494 states and 1878 transitions. Second operand has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:47:34,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:47:34,329 INFO L93 Difference]: Finished difference Result 1058 states and 3484 transitions. [2021-10-07 15:47:34,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-07 15:47:34,331 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:47:34,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:47:34,334 INFO L225 Difference]: With dead ends: 1058 [2021-10-07 15:47:34,334 INFO L226 Difference]: Without dead ends: 1058 [2021-10-07 15:47:34,335 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 5205.4ms TimeCoverageRelationStatistics Valid=178, Invalid=578, Unknown=0, NotChecked=0, Total=756 [2021-10-07 15:47:34,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1058 states. [2021-10-07 15:47:34,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1058 to 494. [2021-10-07 15:47:34,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 494 states, 493 states have (on average 3.8255578093306286) internal successors, (1886), 493 states have internal predecessors, (1886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:47:34,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 1886 transitions. [2021-10-07 15:47:34,355 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 1886 transitions. Word has length 20 [2021-10-07 15:47:34,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:47:34,356 INFO L470 AbstractCegarLoop]: Abstraction has 494 states and 1886 transitions. [2021-10-07 15:47:34,356 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:47:34,356 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 1886 transitions. [2021-10-07 15:47:34,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:47:34,358 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:47:34,358 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] [2021-10-07 15:47:34,373 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (54)] Forceful destruction successful, exit code 0 [2021-10-07 15:47:34,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:47:34,559 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:47:34,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:47:34,560 INFO L82 PathProgramCache]: Analyzing trace with hash -848166297, now seen corresponding path program 20 times [2021-10-07 15:47:34,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:47:34,560 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1662054931] [2021-10-07 15:47:34,561 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:47:34,561 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:47:34,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:47:34,562 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:47:34,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (55)] Waiting until timeout for monitored process [2021-10-07 15:47:35,089 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:47:35,089 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:47:35,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:47:35,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:47:35,358 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:47:35,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:47:36,421 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:47:36,422 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:47:36,422 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1662054931] [2021-10-07 15:47:36,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1662054931] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:47:36,422 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:47:36,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2021-10-07 15:47:36,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094305912] [2021-10-07 15:47:36,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 15:47:36,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:47:36,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 15:47:36,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:47:36,424 INFO L87 Difference]: Start difference. First operand 494 states and 1886 transitions. Second operand has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:47:51,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:47:51,414 INFO L93 Difference]: Finished difference Result 1108 states and 3663 transitions. [2021-10-07 15:47:51,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-07 15:47:51,416 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:47:51,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:47:51,418 INFO L225 Difference]: With dead ends: 1108 [2021-10-07 15:47:51,418 INFO L226 Difference]: Without dead ends: 1108 [2021-10-07 15:47:51,419 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 2499.8ms TimeCoverageRelationStatistics Valid=138, Invalid=368, Unknown=0, NotChecked=0, Total=506 [2021-10-07 15:47:51,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1108 states. [2021-10-07 15:47:51,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1108 to 496. [2021-10-07 15:47:51,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 495 states have (on average 3.8363636363636364) internal successors, (1899), 495 states have internal predecessors, (1899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:47:51,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 1899 transitions. [2021-10-07 15:47:51,432 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 1899 transitions. Word has length 20 [2021-10-07 15:47:51,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:47:51,432 INFO L470 AbstractCegarLoop]: Abstraction has 496 states and 1899 transitions. [2021-10-07 15:47:51,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:47:51,433 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 1899 transitions. [2021-10-07 15:47:51,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:47:51,434 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:47:51,434 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] [2021-10-07 15:47:51,444 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (55)] Ended with exit code 0 [2021-10-07 15:47:51,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:47:51,635 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:47:51,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:47:51,636 INFO L82 PathProgramCache]: Analyzing trace with hash 28342757, now seen corresponding path program 19 times [2021-10-07 15:47:51,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:47:51,637 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [714348756] [2021-10-07 15:47:51,637 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:47:51,637 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:47:51,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:47:51,639 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:47:51,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (56)] Waiting until timeout for monitored process [2021-10-07 15:47:52,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:47:52,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:47:52,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:47:52,305 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:47:52,306 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:47:52,747 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:47:52,748 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:47:52,748 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [714348756] [2021-10-07 15:47:52,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [714348756] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-07 15:47:52,748 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:47:52,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 11 [2021-10-07 15:47:52,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643272790] [2021-10-07 15:47:52,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-07 15:47:52,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:47:52,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-07 15:47:52,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-10-07 15:47:52,750 INFO L87 Difference]: Start difference. First operand 496 states and 1899 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:47:53,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:47:53,028 INFO L93 Difference]: Finished difference Result 628 states and 2293 transitions. [2021-10-07 15:47:53,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-07 15:47:53,029 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:47:53,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:47:53,031 INFO L225 Difference]: With dead ends: 628 [2021-10-07 15:47:53,031 INFO L226 Difference]: Without dead ends: 628 [2021-10-07 15:47:53,031 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 441.3ms TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:47:53,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2021-10-07 15:47:53,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 498. [2021-10-07 15:47:53,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 497 states have (on average 3.835010060362173) internal successors, (1906), 497 states have internal predecessors, (1906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:47:53,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 1906 transitions. [2021-10-07 15:47:53,040 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 1906 transitions. Word has length 20 [2021-10-07 15:47:53,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:47:53,040 INFO L470 AbstractCegarLoop]: Abstraction has 498 states and 1906 transitions. [2021-10-07 15:47:53,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:47:53,041 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 1906 transitions. [2021-10-07 15:47:53,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:47:53,042 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:47:53,042 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] [2021-10-07 15:47:53,053 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (56)] Ended with exit code 0 [2021-10-07 15:47:53,242 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:47:53,243 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:47:53,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:47:53,244 INFO L82 PathProgramCache]: Analyzing trace with hash -1959158933, now seen corresponding path program 21 times [2021-10-07 15:47:53,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:47:53,244 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [588369588] [2021-10-07 15:47:53,245 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:47:53,245 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:47:53,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:47:53,246 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:47:53,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (57)] Waiting until timeout for monitored process [2021-10-07 15:47:53,768 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 15:47:53,768 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:47:53,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:47:53,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:47:53,981 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:47:53,982 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:47:54,449 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:47:54,449 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:47:54,450 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [588369588] [2021-10-07 15:47:54,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [588369588] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-07 15:47:54,450 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:47:54,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-10-07 15:47:54,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755051909] [2021-10-07 15:47:54,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-07 15:47:54,451 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:47:54,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-07 15:47:54,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:47:54,451 INFO L87 Difference]: Start difference. First operand 498 states and 1906 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:47:54,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:47:54,853 INFO L93 Difference]: Finished difference Result 624 states and 2281 transitions. [2021-10-07 15:47:54,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-07 15:47:54,854 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:47:54,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:47:54,856 INFO L225 Difference]: With dead ends: 624 [2021-10-07 15:47:54,856 INFO L226 Difference]: Without dead ends: 622 [2021-10-07 15:47:54,856 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 523.1ms TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2021-10-07 15:47:54,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2021-10-07 15:47:54,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 498. [2021-10-07 15:47:54,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 497 states have (on average 3.8309859154929575) internal successors, (1904), 497 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:47:54,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 1904 transitions. [2021-10-07 15:47:54,869 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 1904 transitions. Word has length 20 [2021-10-07 15:47:54,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:47:54,870 INFO L470 AbstractCegarLoop]: Abstraction has 498 states and 1904 transitions. [2021-10-07 15:47:54,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:47:54,870 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 1904 transitions. [2021-10-07 15:47:54,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:47:54,872 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:47:54,872 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] [2021-10-07 15:47:54,887 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (57)] Forceful destruction successful, exit code 0 [2021-10-07 15:47:55,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:47:55,086 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:47:55,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:47:55,087 INFO L82 PathProgramCache]: Analyzing trace with hash -651715613, now seen corresponding path program 22 times [2021-10-07 15:47:55,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:47:55,088 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1527817508] [2021-10-07 15:47:55,088 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:47:55,088 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:47:55,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:47:55,090 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:47:55,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (58)] Waiting until timeout for monitored process [2021-10-07 15:47:55,980 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:47:55,980 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:47:55,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:47:55,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:47:56,346 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:47:56,353 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:47:56,953 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:47:56,954 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:47:56,954 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1527817508] [2021-10-07 15:47:56,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1527817508] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:47:56,954 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:47:56,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2021-10-07 15:47:56,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606921952] [2021-10-07 15:47:56,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 15:47:56,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:47:56,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 15:47:56,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:47:56,956 INFO L87 Difference]: Start difference. First operand 498 states and 1904 transitions. Second operand has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:03,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:48:03,956 INFO L93 Difference]: Finished difference Result 902 states and 3019 transitions. [2021-10-07 15:48:03,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-07 15:48:03,957 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:48:03,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:48:03,959 INFO L225 Difference]: With dead ends: 902 [2021-10-07 15:48:03,959 INFO L226 Difference]: Without dead ends: 902 [2021-10-07 15:48:03,960 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 1252.6ms TimeCoverageRelationStatistics Valid=142, Invalid=410, Unknown=0, NotChecked=0, Total=552 [2021-10-07 15:48:03,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 902 states. [2021-10-07 15:48:03,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 902 to 498. [2021-10-07 15:48:03,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 497 states have (on average 3.810865191146881) internal successors, (1894), 497 states have internal predecessors, (1894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:03,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 1894 transitions. [2021-10-07 15:48:03,973 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 1894 transitions. Word has length 20 [2021-10-07 15:48:03,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:48:03,973 INFO L470 AbstractCegarLoop]: Abstraction has 498 states and 1894 transitions. [2021-10-07 15:48:03,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:03,973 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 1894 transitions. [2021-10-07 15:48:03,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:48:03,975 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:48:03,975 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] [2021-10-07 15:48:03,992 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (58)] Forceful destruction successful, exit code 0 [2021-10-07 15:48:04,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:48:04,176 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:48:04,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:48:04,177 INFO L82 PathProgramCache]: Analyzing trace with hash -1930147481, now seen corresponding path program 23 times [2021-10-07 15:48:04,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:48:04,177 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [4901825] [2021-10-07 15:48:04,177 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:48:04,178 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:48:04,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:48:04,179 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:48:04,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (59)] Waiting until timeout for monitored process [2021-10-07 15:48:04,659 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:48:04,659 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:48:04,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:48:04,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:48:04,890 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:04,890 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:48:05,307 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:05,308 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:48:05,308 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [4901825] [2021-10-07 15:48:05,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [4901825] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:48:05,308 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:48:05,308 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2021-10-07 15:48:05,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871320791] [2021-10-07 15:48:05,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 15:48:05,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:48:05,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 15:48:05,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:48:05,310 INFO L87 Difference]: Start difference. First operand 498 states and 1894 transitions. Second operand has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:12,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:48:12,558 INFO L93 Difference]: Finished difference Result 1312 states and 4236 transitions. [2021-10-07 15:48:12,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-07 15:48:12,559 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:48:12,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:48:12,562 INFO L225 Difference]: With dead ends: 1312 [2021-10-07 15:48:12,562 INFO L226 Difference]: Without dead ends: 1312 [2021-10-07 15:48:12,563 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 1806.2ms TimeCoverageRelationStatistics Valid=265, Invalid=857, Unknown=0, NotChecked=0, Total=1122 [2021-10-07 15:48:12,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1312 states. [2021-10-07 15:48:12,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1312 to 502. [2021-10-07 15:48:12,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 502 states, 501 states have (on average 3.802395209580838) internal successors, (1905), 501 states have internal predecessors, (1905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:12,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 1905 transitions. [2021-10-07 15:48:12,580 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 1905 transitions. Word has length 20 [2021-10-07 15:48:12,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:48:12,580 INFO L470 AbstractCegarLoop]: Abstraction has 502 states and 1905 transitions. [2021-10-07 15:48:12,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:12,581 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 1905 transitions. [2021-10-07 15:48:12,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:48:12,582 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:48:12,582 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] [2021-10-07 15:48:12,593 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (59)] Forceful destruction successful, exit code 0 [2021-10-07 15:48:12,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:48:12,783 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:48:12,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:48:12,784 INFO L82 PathProgramCache]: Analyzing trace with hash -967757949, now seen corresponding path program 24 times [2021-10-07 15:48:12,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:48:12,784 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [36808801] [2021-10-07 15:48:12,785 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:48:12,785 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:48:12,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:48:12,786 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:48:12,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (60)] Waiting until timeout for monitored process [2021-10-07 15:48:13,357 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-07 15:48:13,357 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:48:13,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:48:13,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:48:13,604 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:13,605 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:48:14,695 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:14,695 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:48:14,695 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [36808801] [2021-10-07 15:48:14,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [36808801] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:48:14,695 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:48:14,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2021-10-07 15:48:14,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2774982] [2021-10-07 15:48:14,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 15:48:14,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:48:14,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 15:48:14,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:48:14,697 INFO L87 Difference]: Start difference. First operand 502 states and 1905 transitions. Second operand has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:21,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:48:21,104 INFO L93 Difference]: Finished difference Result 1246 states and 4139 transitions. [2021-10-07 15:48:21,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-07 15:48:21,105 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:48:21,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:48:21,109 INFO L225 Difference]: With dead ends: 1246 [2021-10-07 15:48:21,109 INFO L226 Difference]: Without dead ends: 1246 [2021-10-07 15:48:21,109 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 3752.9ms TimeCoverageRelationStatistics Valid=175, Invalid=425, Unknown=0, NotChecked=0, Total=600 [2021-10-07 15:48:21,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1246 states. [2021-10-07 15:48:21,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1246 to 532. [2021-10-07 15:48:21,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 531 states have (on average 3.853107344632768) internal successors, (2046), 531 states have internal predecessors, (2046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:21,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 2046 transitions. [2021-10-07 15:48:21,127 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 2046 transitions. Word has length 20 [2021-10-07 15:48:21,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:48:21,128 INFO L470 AbstractCegarLoop]: Abstraction has 532 states and 2046 transitions. [2021-10-07 15:48:21,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:21,128 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 2046 transitions. [2021-10-07 15:48:21,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:48:21,129 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:48:21,129 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] [2021-10-07 15:48:21,140 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (60)] Ended with exit code 0 [2021-10-07 15:48:21,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:48:21,330 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:48:21,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:48:21,331 INFO L82 PathProgramCache]: Analyzing trace with hash -1824848541, now seen corresponding path program 25 times [2021-10-07 15:48:21,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:48:21,332 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1998892254] [2021-10-07 15:48:21,332 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:48:21,332 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:48:21,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:48:21,333 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:48:21,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (61)] Waiting until timeout for monitored process [2021-10-07 15:48:21,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:48:21,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:48:21,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:48:22,124 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:22,124 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:48:23,243 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:23,243 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:48:23,243 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1998892254] [2021-10-07 15:48:23,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1998892254] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:48:23,244 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:48:23,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2021-10-07 15:48:23,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877103281] [2021-10-07 15:48:23,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 15:48:23,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:48:23,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 15:48:23,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:48:23,246 INFO L87 Difference]: Start difference. First operand 532 states and 2046 transitions. Second operand has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:29,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:48:29,387 INFO L93 Difference]: Finished difference Result 1272 states and 4205 transitions. [2021-10-07 15:48:29,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-07 15:48:29,389 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:48:29,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:48:29,392 INFO L225 Difference]: With dead ends: 1272 [2021-10-07 15:48:29,392 INFO L226 Difference]: Without dead ends: 1272 [2021-10-07 15:48:29,392 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 3975.3ms TimeCoverageRelationStatistics Valid=174, Invalid=426, Unknown=0, NotChecked=0, Total=600 [2021-10-07 15:48:29,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1272 states. [2021-10-07 15:48:29,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1272 to 524. [2021-10-07 15:48:29,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 523 states have (on average 3.8260038240917784) internal successors, (2001), 523 states have internal predecessors, (2001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:29,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 2001 transitions. [2021-10-07 15:48:29,408 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 2001 transitions. Word has length 20 [2021-10-07 15:48:29,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:48:29,408 INFO L470 AbstractCegarLoop]: Abstraction has 524 states and 2001 transitions. [2021-10-07 15:48:29,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:29,409 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 2001 transitions. [2021-10-07 15:48:29,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:48:29,410 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:48:29,410 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] [2021-10-07 15:48:29,421 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (61)] Ended with exit code 0 [2021-10-07 15:48:29,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:48:29,611 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:48:29,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:48:29,612 INFO L82 PathProgramCache]: Analyzing trace with hash -409179649, now seen corresponding path program 26 times [2021-10-07 15:48:29,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:48:29,613 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1057982145] [2021-10-07 15:48:29,613 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:48:29,613 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:48:29,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:48:29,615 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:48:29,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (62)] Waiting until timeout for monitored process [2021-10-07 15:48:30,196 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:48:30,196 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:48:30,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:48:30,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:48:30,470 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:30,470 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:48:30,976 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:30,977 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:48:30,977 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1057982145] [2021-10-07 15:48:30,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1057982145] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:48:30,977 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:48:30,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2021-10-07 15:48:30,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600257491] [2021-10-07 15:48:30,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 15:48:30,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:48:30,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 15:48:30,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:48:30,979 INFO L87 Difference]: Start difference. First operand 524 states and 2001 transitions. Second operand has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:36,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:48:36,383 INFO L93 Difference]: Finished difference Result 1576 states and 5117 transitions. [2021-10-07 15:48:36,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-07 15:48:36,384 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:48:36,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:48:36,387 INFO L225 Difference]: With dead ends: 1576 [2021-10-07 15:48:36,387 INFO L226 Difference]: Without dead ends: 1576 [2021-10-07 15:48:36,388 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 2442.2ms TimeCoverageRelationStatistics Valid=279, Invalid=843, Unknown=0, NotChecked=0, Total=1122 [2021-10-07 15:48:36,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1576 states. [2021-10-07 15:48:36,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1576 to 510. [2021-10-07 15:48:36,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 510 states, 509 states have (on average 3.8231827111984282) internal successors, (1946), 509 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:36,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 1946 transitions. [2021-10-07 15:48:36,406 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 1946 transitions. Word has length 20 [2021-10-07 15:48:36,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:48:36,406 INFO L470 AbstractCegarLoop]: Abstraction has 510 states and 1946 transitions. [2021-10-07 15:48:36,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:36,406 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 1946 transitions. [2021-10-07 15:48:36,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:48:36,408 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:48:36,408 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] [2021-10-07 15:48:36,423 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (62)] Forceful destruction successful, exit code 0 [2021-10-07 15:48:36,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:48:36,623 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:48:36,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:48:36,623 INFO L82 PathProgramCache]: Analyzing trace with hash 868128645, now seen corresponding path program 20 times [2021-10-07 15:48:36,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:48:36,624 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [203023909] [2021-10-07 15:48:36,624 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:48:36,624 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:48:36,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:48:36,625 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:48:36,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (63)] Waiting until timeout for monitored process [2021-10-07 15:48:37,293 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:48:37,293 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:48:37,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:48:37,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:48:37,613 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:37,614 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:48:37,884 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:37,885 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:48:37,885 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [203023909] [2021-10-07 15:48:37,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [203023909] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-07 15:48:37,885 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:48:37,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2021-10-07 15:48:37,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622862894] [2021-10-07 15:48:37,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-07 15:48:37,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:48:37,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-07 15:48:37,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:48:37,887 INFO L87 Difference]: Start difference. First operand 510 states and 1946 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:38,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:48:38,120 INFO L93 Difference]: Finished difference Result 786 states and 2835 transitions. [2021-10-07 15:48:38,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-07 15:48:38,121 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:48:38,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:48:38,123 INFO L225 Difference]: With dead ends: 786 [2021-10-07 15:48:38,123 INFO L226 Difference]: Without dead ends: 786 [2021-10-07 15:48:38,123 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 338.3ms TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:48:38,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 786 states. [2021-10-07 15:48:38,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 786 to 510. [2021-10-07 15:48:38,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 510 states, 509 states have (on average 3.8231827111984282) internal successors, (1946), 509 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:38,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 1946 transitions. [2021-10-07 15:48:38,142 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 1946 transitions. Word has length 20 [2021-10-07 15:48:38,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:48:38,142 INFO L470 AbstractCegarLoop]: Abstraction has 510 states and 1946 transitions. [2021-10-07 15:48:38,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:38,142 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 1946 transitions. [2021-10-07 15:48:38,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:48:38,144 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:48:38,145 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] [2021-10-07 15:48:38,160 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (63)] Forceful destruction successful, exit code 0 [2021-10-07 15:48:38,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:48:38,358 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:48:38,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:48:38,359 INFO L82 PathProgramCache]: Analyzing trace with hash 1854257419, now seen corresponding path program 21 times [2021-10-07 15:48:38,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:48:38,360 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [89169403] [2021-10-07 15:48:38,360 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:48:38,360 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:48:38,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:48:38,361 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:48:38,362 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (64)] Waiting until timeout for monitored process [2021-10-07 15:48:38,933 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 15:48:38,934 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:48:38,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:48:38,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:48:39,282 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:39,282 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:48:39,596 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:39,597 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:48:39,597 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [89169403] [2021-10-07 15:48:39,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [89169403] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-07 15:48:39,598 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:48:39,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2021-10-07 15:48:39,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463029543] [2021-10-07 15:48:39,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-07 15:48:39,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:48:39,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-07 15:48:39,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:48:39,600 INFO L87 Difference]: Start difference. First operand 510 states and 1946 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:39,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:48:39,947 INFO L93 Difference]: Finished difference Result 808 states and 2890 transitions. [2021-10-07 15:48:39,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-07 15:48:39,948 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:48:39,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:48:39,950 INFO L225 Difference]: With dead ends: 808 [2021-10-07 15:48:39,950 INFO L226 Difference]: Without dead ends: 808 [2021-10-07 15:48:39,951 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 370.1ms TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:48:39,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2021-10-07 15:48:39,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 514. [2021-10-07 15:48:39,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 514 states, 513 states have (on average 3.8304093567251463) internal successors, (1965), 513 states have internal predecessors, (1965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:39,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 1965 transitions. [2021-10-07 15:48:39,962 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 1965 transitions. Word has length 20 [2021-10-07 15:48:39,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:48:39,962 INFO L470 AbstractCegarLoop]: Abstraction has 514 states and 1965 transitions. [2021-10-07 15:48:39,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:39,963 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 1965 transitions. [2021-10-07 15:48:39,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:48:39,964 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:48:39,964 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] [2021-10-07 15:48:39,975 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (64)] Forceful destruction successful, exit code 0 [2021-10-07 15:48:40,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:48:40,166 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:48:40,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:48:40,167 INFO L82 PathProgramCache]: Analyzing trace with hash 1338575209, now seen corresponding path program 22 times [2021-10-07 15:48:40,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:48:40,167 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [331279970] [2021-10-07 15:48:40,168 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:48:40,168 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:48:40,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:48:40,169 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:48:40,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (65)] Waiting until timeout for monitored process [2021-10-07 15:48:40,684 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:48:40,685 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:48:40,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:48:40,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:48:40,923 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:40,923 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:48:41,249 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:41,250 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:48:41,250 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [331279970] [2021-10-07 15:48:41,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [331279970] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:48:41,250 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:48:41,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-10-07 15:48:41,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691735542] [2021-10-07 15:48:41,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:48:41,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:48:41,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:48:41,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:48:41,252 INFO L87 Difference]: Start difference. First operand 514 states and 1965 transitions. Second operand has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:42,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:48:42,644 INFO L93 Difference]: Finished difference Result 1114 states and 3871 transitions. [2021-10-07 15:48:42,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-07 15:48:42,645 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:48:42,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:48:42,647 INFO L225 Difference]: With dead ends: 1114 [2021-10-07 15:48:42,647 INFO L226 Difference]: Without dead ends: 1108 [2021-10-07 15:48:42,648 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 581.2ms TimeCoverageRelationStatistics Valid=108, Invalid=234, Unknown=0, NotChecked=0, Total=342 [2021-10-07 15:48:42,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1108 states. [2021-10-07 15:48:42,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1108 to 524. [2021-10-07 15:48:42,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 523 states have (on average 3.8489483747609943) internal successors, (2013), 523 states have internal predecessors, (2013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:42,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 2013 transitions. [2021-10-07 15:48:42,663 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 2013 transitions. Word has length 20 [2021-10-07 15:48:42,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:48:42,664 INFO L470 AbstractCegarLoop]: Abstraction has 524 states and 2013 transitions. [2021-10-07 15:48:42,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:42,664 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 2013 transitions. [2021-10-07 15:48:42,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:48:42,665 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:48:42,666 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] [2021-10-07 15:48:42,676 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (65)] Ended with exit code 0 [2021-10-07 15:48:42,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:48:42,867 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:48:42,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:48:42,868 INFO L82 PathProgramCache]: Analyzing trace with hash -1289050483, now seen corresponding path program 23 times [2021-10-07 15:48:42,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:48:42,868 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [417344797] [2021-10-07 15:48:42,869 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:48:42,869 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:48:42,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:48:42,870 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:48:42,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (66)] Waiting until timeout for monitored process [2021-10-07 15:48:43,423 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:48:43,423 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:48:43,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:48:43,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:48:43,846 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:43,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:48:44,172 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:44,173 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:48:44,173 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [417344797] [2021-10-07 15:48:44,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [417344797] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-07 15:48:44,173 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:48:44,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2021-10-07 15:48:44,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118168718] [2021-10-07 15:48:44,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-07 15:48:44,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:48:44,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-07 15:48:44,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:48:44,175 INFO L87 Difference]: Start difference. First operand 524 states and 2013 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:44,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:48:44,486 INFO L93 Difference]: Finished difference Result 804 states and 2925 transitions. [2021-10-07 15:48:44,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-07 15:48:44,487 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:48:44,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:48:44,490 INFO L225 Difference]: With dead ends: 804 [2021-10-07 15:48:44,490 INFO L226 Difference]: Without dead ends: 804 [2021-10-07 15:48:44,490 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 450.4ms TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:48:44,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2021-10-07 15:48:44,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 508. [2021-10-07 15:48:44,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 507 states have (on average 3.8500986193293887) internal successors, (1952), 507 states have internal predecessors, (1952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:44,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 1952 transitions. [2021-10-07 15:48:44,505 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 1952 transitions. Word has length 20 [2021-10-07 15:48:44,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:48:44,506 INFO L470 AbstractCegarLoop]: Abstraction has 508 states and 1952 transitions. [2021-10-07 15:48:44,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:44,506 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 1952 transitions. [2021-10-07 15:48:44,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:48:44,508 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:48:44,508 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] [2021-10-07 15:48:44,525 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (66)] Forceful destruction successful, exit code 0 [2021-10-07 15:48:44,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:48:44,723 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:48:44,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:48:44,723 INFO L82 PathProgramCache]: Analyzing trace with hash 2062351461, now seen corresponding path program 24 times [2021-10-07 15:48:44,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:48:44,724 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [470162058] [2021-10-07 15:48:44,724 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:48:44,725 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:48:44,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:48:44,726 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:48:44,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (67)] Waiting until timeout for monitored process [2021-10-07 15:48:45,339 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-07 15:48:45,340 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:48:45,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:48:45,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:48:45,702 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:45,702 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:48:45,924 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:45,925 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:48:45,925 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [470162058] [2021-10-07 15:48:45,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [470162058] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-07 15:48:45,925 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:48:45,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2021-10-07 15:48:45,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088380612] [2021-10-07 15:48:45,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-07 15:48:45,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:48:45,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-07 15:48:45,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:48:45,927 INFO L87 Difference]: Start difference. First operand 508 states and 1952 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:46,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:48:46,207 INFO L93 Difference]: Finished difference Result 760 states and 2764 transitions. [2021-10-07 15:48:46,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-07 15:48:46,208 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:48:46,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:48:46,210 INFO L225 Difference]: With dead ends: 760 [2021-10-07 15:48:46,210 INFO L226 Difference]: Without dead ends: 760 [2021-10-07 15:48:46,210 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 338.6ms TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:48:46,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2021-10-07 15:48:46,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 514. [2021-10-07 15:48:46,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 514 states, 513 states have (on average 3.865497076023392) internal successors, (1983), 513 states have internal predecessors, (1983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:46,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 1983 transitions. [2021-10-07 15:48:46,221 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 1983 transitions. Word has length 20 [2021-10-07 15:48:46,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:48:46,221 INFO L470 AbstractCegarLoop]: Abstraction has 514 states and 1983 transitions. [2021-10-07 15:48:46,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:46,221 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 1983 transitions. [2021-10-07 15:48:46,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:48:46,222 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:48:46,222 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] [2021-10-07 15:48:46,233 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (67)] Ended with exit code 0 [2021-10-07 15:48:46,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:48:46,423 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:48:46,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:48:46,424 INFO L82 PathProgramCache]: Analyzing trace with hash 2076622965, now seen corresponding path program 25 times [2021-10-07 15:48:46,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:48:46,426 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [89676178] [2021-10-07 15:48:46,426 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:48:46,426 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:48:46,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:48:46,427 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:48:46,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (68)] Waiting until timeout for monitored process [2021-10-07 15:48:46,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:48:46,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:48:46,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:48:47,307 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:47,307 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:48:47,539 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:47,540 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:48:47,540 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [89676178] [2021-10-07 15:48:47,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [89676178] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-07 15:48:47,540 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:48:47,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2021-10-07 15:48:47,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860217630] [2021-10-07 15:48:47,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-07 15:48:47,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:48:47,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-07 15:48:47,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:48:47,542 INFO L87 Difference]: Start difference. First operand 514 states and 1983 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:47,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:48:47,839 INFO L93 Difference]: Finished difference Result 764 states and 2774 transitions. [2021-10-07 15:48:47,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-07 15:48:47,840 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:48:47,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:48:47,842 INFO L225 Difference]: With dead ends: 764 [2021-10-07 15:48:47,842 INFO L226 Difference]: Without dead ends: 764 [2021-10-07 15:48:47,842 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 339.7ms TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:48:47,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2021-10-07 15:48:47,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 512. [2021-10-07 15:48:47,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 512 states, 511 states have (on average 3.8551859099804306) internal successors, (1970), 511 states have internal predecessors, (1970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:47,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 1970 transitions. [2021-10-07 15:48:47,853 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 1970 transitions. Word has length 20 [2021-10-07 15:48:47,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:48:47,853 INFO L470 AbstractCegarLoop]: Abstraction has 512 states and 1970 transitions. [2021-10-07 15:48:47,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:47,853 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 1970 transitions. [2021-10-07 15:48:47,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:48:47,854 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:48:47,855 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] [2021-10-07 15:48:47,868 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (68)] Forceful destruction successful, exit code 0 [2021-10-07 15:48:48,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:48:48,063 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:48:48,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:48:48,064 INFO L82 PathProgramCache]: Analyzing trace with hash 726866433, now seen corresponding path program 26 times [2021-10-07 15:48:48,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:48:48,065 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1091681665] [2021-10-07 15:48:48,065 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:48:48,065 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:48:48,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:48:48,067 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:48:48,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (69)] Waiting until timeout for monitored process [2021-10-07 15:48:48,678 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:48:48,678 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:48:48,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:48:48,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:48:48,999 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:48,999 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:48:49,253 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:49,253 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:48:49,253 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1091681665] [2021-10-07 15:48:49,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1091681665] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-07 15:48:49,254 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:48:49,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2021-10-07 15:48:49,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820502420] [2021-10-07 15:48:49,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-07 15:48:49,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:48:49,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-07 15:48:49,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:48:49,255 INFO L87 Difference]: Start difference. First operand 512 states and 1970 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:49,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:48:49,482 INFO L93 Difference]: Finished difference Result 684 states and 2500 transitions. [2021-10-07 15:48:49,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-07 15:48:49,483 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:48:49,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:48:49,486 INFO L225 Difference]: With dead ends: 684 [2021-10-07 15:48:49,486 INFO L226 Difference]: Without dead ends: 684 [2021-10-07 15:48:49,486 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 341.2ms TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:48:49,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2021-10-07 15:48:49,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 510. [2021-10-07 15:48:49,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 510 states, 509 states have (on average 3.8605108055009825) internal successors, (1965), 509 states have internal predecessors, (1965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:49,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 1965 transitions. [2021-10-07 15:48:49,503 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 1965 transitions. Word has length 20 [2021-10-07 15:48:49,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:48:49,503 INFO L470 AbstractCegarLoop]: Abstraction has 510 states and 1965 transitions. [2021-10-07 15:48:49,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:49,504 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 1965 transitions. [2021-10-07 15:48:49,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:48:49,506 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:48:49,506 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] [2021-10-07 15:48:49,524 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (69)] Forceful destruction successful, exit code 0 [2021-10-07 15:48:49,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:48:49,722 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:48:49,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:48:49,723 INFO L82 PathProgramCache]: Analyzing trace with hash 1598635075, now seen corresponding path program 9 times [2021-10-07 15:48:49,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:48:49,724 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [804938060] [2021-10-07 15:48:49,724 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:48:49,724 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:48:49,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:48:49,726 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:48:49,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (70)] Waiting until timeout for monitored process [2021-10-07 15:48:50,358 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 15:48:50,358 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:48:50,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:48:50,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:48:50,563 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:50,563 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:48:51,029 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:51,029 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:48:51,029 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [804938060] [2021-10-07 15:48:51,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [804938060] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-07 15:48:51,030 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:48:51,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 12 [2021-10-07 15:48:51,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582125638] [2021-10-07 15:48:51,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-07 15:48:51,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:48:51,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-07 15:48:51,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:48:51,031 INFO L87 Difference]: Start difference. First operand 510 states and 1965 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:51,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:48:51,287 INFO L93 Difference]: Finished difference Result 690 states and 2481 transitions. [2021-10-07 15:48:51,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-07 15:48:51,288 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:48:51,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:48:51,290 INFO L225 Difference]: With dead ends: 690 [2021-10-07 15:48:51,290 INFO L226 Difference]: Without dead ends: 678 [2021-10-07 15:48:51,290 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 453.7ms TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2021-10-07 15:48:51,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 678 states. [2021-10-07 15:48:51,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 678 to 524. [2021-10-07 15:48:51,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 523 states have (on average 3.869980879541109) internal successors, (2024), 523 states have internal predecessors, (2024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:51,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 2024 transitions. [2021-10-07 15:48:51,301 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 2024 transitions. Word has length 20 [2021-10-07 15:48:51,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:48:51,301 INFO L470 AbstractCegarLoop]: Abstraction has 524 states and 2024 transitions. [2021-10-07 15:48:51,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:51,301 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 2024 transitions. [2021-10-07 15:48:51,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:48:51,303 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:48:51,303 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] [2021-10-07 15:48:51,315 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (70)] Ended with exit code 0 [2021-10-07 15:48:51,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:48:51,504 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:48:51,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:48:51,504 INFO L82 PathProgramCache]: Analyzing trace with hash 2102666705, now seen corresponding path program 10 times [2021-10-07 15:48:51,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:48:51,505 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [174967432] [2021-10-07 15:48:51,505 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:48:51,506 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:48:51,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:48:51,507 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:48:51,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (71)] Waiting until timeout for monitored process [2021-10-07 15:48:52,050 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:48:52,050 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:48:52,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:48:52,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:48:52,268 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:52,268 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:48:53,005 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:53,006 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:48:53,006 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [174967432] [2021-10-07 15:48:53,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [174967432] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-07 15:48:53,006 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:48:53,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 12 [2021-10-07 15:48:53,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842863752] [2021-10-07 15:48:53,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-07 15:48:53,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:48:53,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-07 15:48:53,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:48:53,008 INFO L87 Difference]: Start difference. First operand 524 states and 2024 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:53,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:48:53,264 INFO L93 Difference]: Finished difference Result 700 states and 2511 transitions. [2021-10-07 15:48:53,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-07 15:48:53,265 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:48:53,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:48:53,267 INFO L225 Difference]: With dead ends: 700 [2021-10-07 15:48:53,267 INFO L226 Difference]: Without dead ends: 700 [2021-10-07 15:48:53,267 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 658.2ms TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2021-10-07 15:48:53,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2021-10-07 15:48:53,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 520. [2021-10-07 15:48:53,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 520 states, 519 states have (on average 3.878612716763006) internal successors, (2013), 519 states have internal predecessors, (2013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:53,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 2013 transitions. [2021-10-07 15:48:53,288 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 2013 transitions. Word has length 20 [2021-10-07 15:48:53,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:48:53,289 INFO L470 AbstractCegarLoop]: Abstraction has 520 states and 2013 transitions. [2021-10-07 15:48:53,289 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:53,289 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 2013 transitions. [2021-10-07 15:48:53,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:48:53,290 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:48:53,290 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] [2021-10-07 15:48:53,302 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (71)] Forceful destruction successful, exit code 0 [2021-10-07 15:48:53,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:48:53,491 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:48:53,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:48:53,492 INFO L82 PathProgramCache]: Analyzing trace with hash 1727298099, now seen corresponding path program 11 times [2021-10-07 15:48:53,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:48:53,493 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [854960131] [2021-10-07 15:48:53,493 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:48:53,493 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:48:53,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:48:53,494 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:48:53,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (72)] Waiting until timeout for monitored process [2021-10-07 15:48:54,075 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:48:54,076 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:48:54,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:48:54,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:48:54,294 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:54,294 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:48:54,780 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:54,780 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:48:54,780 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [854960131] [2021-10-07 15:48:54,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [854960131] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-07 15:48:54,781 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:48:54,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 12 [2021-10-07 15:48:54,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871619386] [2021-10-07 15:48:54,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-07 15:48:54,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:48:54,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-07 15:48:54,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:48:54,782 INFO L87 Difference]: Start difference. First operand 520 states and 2013 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:55,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:48:55,204 INFO L93 Difference]: Finished difference Result 716 states and 2527 transitions. [2021-10-07 15:48:55,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-07 15:48:55,205 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:48:55,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:48:55,206 INFO L225 Difference]: With dead ends: 716 [2021-10-07 15:48:55,206 INFO L226 Difference]: Without dead ends: 704 [2021-10-07 15:48:55,207 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 491.3ms TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2021-10-07 15:48:55,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2021-10-07 15:48:55,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 526. [2021-10-07 15:48:55,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 525 states have (on average 3.874285714285714) internal successors, (2034), 525 states have internal predecessors, (2034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:55,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 2034 transitions. [2021-10-07 15:48:55,225 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 2034 transitions. Word has length 20 [2021-10-07 15:48:55,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:48:55,226 INFO L470 AbstractCegarLoop]: Abstraction has 526 states and 2034 transitions. [2021-10-07 15:48:55,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:55,226 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 2034 transitions. [2021-10-07 15:48:55,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:48:55,228 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:48:55,228 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] [2021-10-07 15:48:55,244 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (72)] Forceful destruction successful, exit code 0 [2021-10-07 15:48:55,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:48:55,442 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:48:55,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:48:55,442 INFO L82 PathProgramCache]: Analyzing trace with hash -465573117, now seen corresponding path program 27 times [2021-10-07 15:48:55,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:48:55,443 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1225012189] [2021-10-07 15:48:55,443 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:48:55,444 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:48:55,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:48:55,445 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:48:55,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (73)] Waiting until timeout for monitored process [2021-10-07 15:48:56,150 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 15:48:56,151 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:48:56,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:48:56,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:48:56,425 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:56,426 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:48:56,828 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:56,828 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:48:56,828 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1225012189] [2021-10-07 15:48:56,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1225012189] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:48:56,829 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:48:56,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-10-07 15:48:56,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417838936] [2021-10-07 15:48:56,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 15:48:56,832 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:48:56,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 15:48:56,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:48:56,833 INFO L87 Difference]: Start difference. First operand 526 states and 2034 transitions. Second operand has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:58,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:48:58,542 INFO L93 Difference]: Finished difference Result 1030 states and 3487 transitions. [2021-10-07 15:48:58,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-07 15:48:58,543 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:48:58,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:48:58,545 INFO L225 Difference]: With dead ends: 1030 [2021-10-07 15:48:58,546 INFO L226 Difference]: Without dead ends: 1030 [2021-10-07 15:48:58,546 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 1053.0ms TimeCoverageRelationStatistics Valid=208, Invalid=494, Unknown=0, NotChecked=0, Total=702 [2021-10-07 15:48:58,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1030 states. [2021-10-07 15:48:58,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1030 to 528. [2021-10-07 15:48:58,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 527 states have (on average 3.869070208728653) internal successors, (2039), 527 states have internal predecessors, (2039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:58,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 2039 transitions. [2021-10-07 15:48:58,559 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 2039 transitions. Word has length 20 [2021-10-07 15:48:58,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:48:58,560 INFO L470 AbstractCegarLoop]: Abstraction has 528 states and 2039 transitions. [2021-10-07 15:48:58,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:58,560 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 2039 transitions. [2021-10-07 15:48:58,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:48:58,561 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:48:58,561 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] [2021-10-07 15:48:58,573 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (73)] Forceful destruction successful, exit code 0 [2021-10-07 15:48:58,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:48:58,764 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:48:58,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:48:58,765 INFO L82 PathProgramCache]: Analyzing trace with hash -225025469, now seen corresponding path program 28 times [2021-10-07 15:48:58,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:48:58,766 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2034739711] [2021-10-07 15:48:58,766 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:48:58,766 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:48:58,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:48:58,767 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:48:58,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (74)] Waiting until timeout for monitored process [2021-10-07 15:48:59,363 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:48:59,364 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:48:59,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:48:59,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:48:59,569 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:59,570 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:49:00,063 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:49:00,064 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:49:00,064 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2034739711] [2021-10-07 15:49:00,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2034739711] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-07 15:49:00,064 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:49:00,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 12 [2021-10-07 15:49:00,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802068017] [2021-10-07 15:49:00,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-07 15:49:00,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:49:00,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-07 15:49:00,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:49:00,066 INFO L87 Difference]: Start difference. First operand 528 states and 2039 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:00,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:49:00,579 INFO L93 Difference]: Finished difference Result 734 states and 2602 transitions. [2021-10-07 15:49:00,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-07 15:49:00,580 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:49:00,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:49:00,582 INFO L225 Difference]: With dead ends: 734 [2021-10-07 15:49:00,582 INFO L226 Difference]: Without dead ends: 732 [2021-10-07 15:49:00,582 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 552.9ms TimeCoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2021-10-07 15:49:00,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2021-10-07 15:49:00,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 530. [2021-10-07 15:49:00,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 529 states have (on average 3.8638941398865785) internal successors, (2044), 529 states have internal predecessors, (2044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:00,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 2044 transitions. [2021-10-07 15:49:00,604 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 2044 transitions. Word has length 20 [2021-10-07 15:49:00,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:49:00,604 INFO L470 AbstractCegarLoop]: Abstraction has 530 states and 2044 transitions. [2021-10-07 15:49:00,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:00,604 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 2044 transitions. [2021-10-07 15:49:00,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:49:00,606 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:49:00,606 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:49:00,620 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (74)] Forceful destruction successful, exit code 0 [2021-10-07 15:49:00,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 74 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:49:00,817 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:49:00,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:49:00,818 INFO L82 PathProgramCache]: Analyzing trace with hash 1769851099, now seen corresponding path program 29 times [2021-10-07 15:49:00,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:49:00,818 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1646530228] [2021-10-07 15:49:00,819 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:49:00,819 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:49:00,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:49:00,820 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:49:00,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (75)] Waiting until timeout for monitored process [2021-10-07 15:49:01,400 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:49:01,400 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:49:01,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:49:01,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:49:01,675 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:49:01,675 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:49:02,142 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:49:02,142 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:49:02,143 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1646530228] [2021-10-07 15:49:02,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1646530228] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:49:02,143 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:49:02,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-10-07 15:49:02,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745941568] [2021-10-07 15:49:02,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 15:49:02,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:49:02,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 15:49:02,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:49:02,144 INFO L87 Difference]: Start difference. First operand 530 states and 2044 transitions. Second operand has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:04,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:49:04,319 INFO L93 Difference]: Finished difference Result 1044 states and 3534 transitions. [2021-10-07 15:49:04,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-07 15:49:04,320 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:49:04,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:49:04,322 INFO L225 Difference]: With dead ends: 1044 [2021-10-07 15:49:04,322 INFO L226 Difference]: Without dead ends: 1044 [2021-10-07 15:49:04,323 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 1320.3ms TimeCoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2021-10-07 15:49:04,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1044 states. [2021-10-07 15:49:04,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1044 to 528. [2021-10-07 15:49:04,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 527 states have (on average 3.876660341555977) internal successors, (2043), 527 states have internal predecessors, (2043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:04,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 2043 transitions. [2021-10-07 15:49:04,338 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 2043 transitions. Word has length 20 [2021-10-07 15:49:04,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:49:04,338 INFO L470 AbstractCegarLoop]: Abstraction has 528 states and 2043 transitions. [2021-10-07 15:49:04,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:04,339 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 2043 transitions. [2021-10-07 15:49:04,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:49:04,340 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:49:04,341 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] [2021-10-07 15:49:04,352 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (75)] Forceful destruction successful, exit code 0 [2021-10-07 15:49:04,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:49:04,542 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:49:04,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:49:04,543 INFO L82 PathProgramCache]: Analyzing trace with hash 1857006971, now seen corresponding path program 30 times [2021-10-07 15:49:04,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:49:04,544 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [291567834] [2021-10-07 15:49:04,544 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:49:04,544 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:49:04,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:49:04,546 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:49:04,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (76)] Waiting until timeout for monitored process [2021-10-07 15:49:05,230 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-07 15:49:05,231 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:49:05,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:49:05,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:49:05,509 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:49:05,509 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:49:05,940 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:49:05,941 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:49:05,941 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [291567834] [2021-10-07 15:49:05,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [291567834] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:49:05,941 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:49:05,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-10-07 15:49:05,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897045337] [2021-10-07 15:49:05,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 15:49:05,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:49:05,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 15:49:05,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:49:05,943 INFO L87 Difference]: Start difference. First operand 528 states and 2043 transitions. Second operand has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:08,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:49:08,628 INFO L93 Difference]: Finished difference Result 1364 states and 4503 transitions. [2021-10-07 15:49:08,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-07 15:49:08,629 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:49:08,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:49:08,632 INFO L225 Difference]: With dead ends: 1364 [2021-10-07 15:49:08,632 INFO L226 Difference]: Without dead ends: 1364 [2021-10-07 15:49:08,633 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 1382.4ms TimeCoverageRelationStatistics Valid=286, Invalid=644, Unknown=0, NotChecked=0, Total=930 [2021-10-07 15:49:08,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1364 states. [2021-10-07 15:49:08,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1364 to 538. [2021-10-07 15:49:08,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 537 states have (on average 3.891992551210428) internal successors, (2090), 537 states have internal predecessors, (2090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:08,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 2090 transitions. [2021-10-07 15:49:08,651 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 2090 transitions. Word has length 20 [2021-10-07 15:49:08,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:49:08,651 INFO L470 AbstractCegarLoop]: Abstraction has 538 states and 2090 transitions. [2021-10-07 15:49:08,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:08,652 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 2090 transitions. [2021-10-07 15:49:08,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:49:08,653 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:49:08,653 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] [2021-10-07 15:49:08,665 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (76)] Forceful destruction successful, exit code 0 [2021-10-07 15:49:08,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:49:08,854 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:49:08,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:49:08,855 INFO L82 PathProgramCache]: Analyzing trace with hash -1451831551, now seen corresponding path program 31 times [2021-10-07 15:49:08,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:49:08,856 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [503657339] [2021-10-07 15:49:08,856 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:49:08,856 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:49:08,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:49:08,857 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:49:08,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (77)] Waiting until timeout for monitored process [2021-10-07 15:49:09,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:49:09,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:49:09,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:49:09,701 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:49:09,701 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:49:10,868 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:49:10,869 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:49:10,869 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [503657339] [2021-10-07 15:49:10,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [503657339] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:49:10,869 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:49:10,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-10-07 15:49:10,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429412870] [2021-10-07 15:49:10,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 15:49:10,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:49:10,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 15:49:10,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:49:10,871 INFO L87 Difference]: Start difference. First operand 538 states and 2090 transitions. Second operand has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:16,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:49:16,521 INFO L93 Difference]: Finished difference Result 1136 states and 3787 transitions. [2021-10-07 15:49:16,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-07 15:49:16,522 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:49:16,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:49:16,524 INFO L225 Difference]: With dead ends: 1136 [2021-10-07 15:49:16,524 INFO L226 Difference]: Without dead ends: 1136 [2021-10-07 15:49:16,524 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 3405.6ms TimeCoverageRelationStatistics Valid=217, Invalid=433, Unknown=0, NotChecked=0, Total=650 [2021-10-07 15:49:16,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1136 states. [2021-10-07 15:49:16,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1136 to 536. [2021-10-07 15:49:16,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 535 states have (on average 3.8934579439252337) internal successors, (2083), 535 states have internal predecessors, (2083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:16,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 2083 transitions. [2021-10-07 15:49:16,537 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 2083 transitions. Word has length 20 [2021-10-07 15:49:16,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:49:16,537 INFO L470 AbstractCegarLoop]: Abstraction has 536 states and 2083 transitions. [2021-10-07 15:49:16,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:16,537 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 2083 transitions. [2021-10-07 15:49:16,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:49:16,539 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:49:16,539 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] [2021-10-07 15:49:16,552 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (77)] Forceful destruction successful, exit code 0 [2021-10-07 15:49:16,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:49:16,740 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:49:16,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:49:16,741 INFO L82 PathProgramCache]: Analyzing trace with hash 1361355629, now seen corresponding path program 12 times [2021-10-07 15:49:16,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:49:16,741 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1456408341] [2021-10-07 15:49:16,742 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:49:16,742 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:49:16,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:49:16,743 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:49:16,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (78)] Waiting until timeout for monitored process [2021-10-07 15:49:17,401 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-07 15:49:17,401 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:49:17,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:49:17,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:49:17,623 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:49:17,623 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:49:18,364 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:49:18,364 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:49:18,364 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1456408341] [2021-10-07 15:49:18,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1456408341] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-07 15:49:18,365 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:49:18,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 12 [2021-10-07 15:49:18,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968832083] [2021-10-07 15:49:18,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-07 15:49:18,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:49:18,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-07 15:49:18,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:49:18,366 INFO L87 Difference]: Start difference. First operand 536 states and 2083 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:18,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:49:18,678 INFO L93 Difference]: Finished difference Result 738 states and 2650 transitions. [2021-10-07 15:49:18,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-07 15:49:18,679 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:49:18,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:49:18,680 INFO L225 Difference]: With dead ends: 738 [2021-10-07 15:49:18,680 INFO L226 Difference]: Without dead ends: 738 [2021-10-07 15:49:18,681 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 620.9ms TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:49:18,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738 states. [2021-10-07 15:49:18,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738 to 532. [2021-10-07 15:49:18,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 531 states have (on average 3.902071563088512) internal successors, (2072), 531 states have internal predecessors, (2072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:18,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 2072 transitions. [2021-10-07 15:49:18,692 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 2072 transitions. Word has length 20 [2021-10-07 15:49:18,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:49:18,692 INFO L470 AbstractCegarLoop]: Abstraction has 532 states and 2072 transitions. [2021-10-07 15:49:18,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:18,693 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 2072 transitions. [2021-10-07 15:49:18,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:49:18,694 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:49:18,694 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] [2021-10-07 15:49:18,706 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (78)] Forceful destruction successful, exit code 0 [2021-10-07 15:49:18,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:49:18,895 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:49:18,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:49:18,896 INFO L82 PathProgramCache]: Analyzing trace with hash -779563579, now seen corresponding path program 13 times [2021-10-07 15:49:18,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:49:18,897 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1157821836] [2021-10-07 15:49:18,897 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:49:18,897 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:49:18,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:49:18,900 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:49:18,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (79)] Waiting until timeout for monitored process [2021-10-07 15:49:19,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:49:19,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:49:19,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:49:19,767 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:49:19,767 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:49:20,601 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:49:20,601 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:49:20,601 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1157821836] [2021-10-07 15:49:20,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1157821836] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-07 15:49:20,602 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:49:20,602 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 12 [2021-10-07 15:49:20,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130163239] [2021-10-07 15:49:20,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-07 15:49:20,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:49:20,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-07 15:49:20,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:49:20,603 INFO L87 Difference]: Start difference. First operand 532 states and 2072 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:20,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:49:20,844 INFO L93 Difference]: Finished difference Result 764 states and 2722 transitions. [2021-10-07 15:49:20,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-07 15:49:20,845 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:49:20,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:49:20,847 INFO L225 Difference]: With dead ends: 764 [2021-10-07 15:49:20,847 INFO L226 Difference]: Without dead ends: 764 [2021-10-07 15:49:20,847 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 675.1ms TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:49:20,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2021-10-07 15:49:20,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 532. [2021-10-07 15:49:20,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 531 states have (on average 3.902071563088512) internal successors, (2072), 531 states have internal predecessors, (2072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:20,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 2072 transitions. [2021-10-07 15:49:20,858 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 2072 transitions. Word has length 20 [2021-10-07 15:49:20,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:49:20,858 INFO L470 AbstractCegarLoop]: Abstraction has 532 states and 2072 transitions. [2021-10-07 15:49:20,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:20,859 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 2072 transitions. [2021-10-07 15:49:20,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:49:20,860 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:49:20,860 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] [2021-10-07 15:49:20,871 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (79)] Forceful destruction successful, exit code 0 [2021-10-07 15:49:21,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 79 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:49:21,063 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:49:21,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:49:21,063 INFO L82 PathProgramCache]: Analyzing trace with hash 823570923, now seen corresponding path program 32 times [2021-10-07 15:49:21,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:49:21,064 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [681779195] [2021-10-07 15:49:21,064 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:49:21,064 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:49:21,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:49:21,066 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:49:21,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (80)] Waiting until timeout for monitored process [2021-10-07 15:49:21,837 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:49:21,837 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:49:21,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:49:21,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:49:22,062 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:49:22,063 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:49:22,683 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:49:22,683 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:49:22,683 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [681779195] [2021-10-07 15:49:22,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [681779195] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-07 15:49:22,684 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:49:22,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 12 [2021-10-07 15:49:22,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758228154] [2021-10-07 15:49:22,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-07 15:49:22,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:49:22,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-07 15:49:22,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:49:22,685 INFO L87 Difference]: Start difference. First operand 532 states and 2072 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:23,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:49:23,212 INFO L93 Difference]: Finished difference Result 750 states and 2690 transitions. [2021-10-07 15:49:23,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-07 15:49:23,213 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:49:23,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:49:23,215 INFO L225 Difference]: With dead ends: 750 [2021-10-07 15:49:23,215 INFO L226 Difference]: Without dead ends: 748 [2021-10-07 15:49:23,216 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 590.4ms TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2021-10-07 15:49:23,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2021-10-07 15:49:23,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 534. [2021-10-07 15:49:23,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 533 states have (on average 3.896810506566604) internal successors, (2077), 533 states have internal predecessors, (2077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:23,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 2077 transitions. [2021-10-07 15:49:23,227 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 2077 transitions. Word has length 20 [2021-10-07 15:49:23,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:49:23,227 INFO L470 AbstractCegarLoop]: Abstraction has 534 states and 2077 transitions. [2021-10-07 15:49:23,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:23,227 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 2077 transitions. [2021-10-07 15:49:23,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:49:23,229 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:49:23,229 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] [2021-10-07 15:49:23,247 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (80)] Forceful destruction successful, exit code 0 [2021-10-07 15:49:23,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:49:23,444 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:49:23,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:49:23,445 INFO L82 PathProgramCache]: Analyzing trace with hash -1476519805, now seen corresponding path program 33 times [2021-10-07 15:49:23,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:49:23,446 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1606924212] [2021-10-07 15:49:23,446 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:49:23,446 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:49:23,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:49:23,448 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:49:23,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (81)] Waiting until timeout for monitored process [2021-10-07 15:49:24,171 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 15:49:24,171 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:49:24,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:49:24,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:49:24,455 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:49:24,455 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:49:25,095 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:49:25,095 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:49:25,096 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1606924212] [2021-10-07 15:49:25,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1606924212] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:49:25,096 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:49:25,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-10-07 15:49:25,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745942514] [2021-10-07 15:49:25,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 15:49:25,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:49:25,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 15:49:25,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:49:25,098 INFO L87 Difference]: Start difference. First operand 534 states and 2077 transitions. Second operand has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:33,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:49:33,787 INFO L93 Difference]: Finished difference Result 1190 states and 3879 transitions. [2021-10-07 15:49:33,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-07 15:49:33,788 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:49:33,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:49:33,790 INFO L225 Difference]: With dead ends: 1190 [2021-10-07 15:49:33,791 INFO L226 Difference]: Without dead ends: 1190 [2021-10-07 15:49:33,791 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 2050.0ms TimeCoverageRelationStatistics Valid=218, Invalid=594, Unknown=0, NotChecked=0, Total=812 [2021-10-07 15:49:33,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1190 states. [2021-10-07 15:49:33,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1190 to 538. [2021-10-07 15:49:33,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 537 states have (on average 3.9236499068901303) internal successors, (2107), 537 states have internal predecessors, (2107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:33,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 2107 transitions. [2021-10-07 15:49:33,806 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 2107 transitions. Word has length 20 [2021-10-07 15:49:33,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:49:33,806 INFO L470 AbstractCegarLoop]: Abstraction has 538 states and 2107 transitions. [2021-10-07 15:49:33,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:33,806 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 2107 transitions. [2021-10-07 15:49:33,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:49:33,808 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:49:33,808 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] [2021-10-07 15:49:33,819 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (81)] Ended with exit code 0 [2021-10-07 15:49:34,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:49:34,009 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:49:34,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:49:34,010 INFO L82 PathProgramCache]: Analyzing trace with hash 818319371, now seen corresponding path program 34 times [2021-10-07 15:49:34,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:49:34,010 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1308147342] [2021-10-07 15:49:34,010 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:49:34,011 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:49:34,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:49:34,012 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:49:34,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (82)] Waiting until timeout for monitored process [2021-10-07 15:49:34,636 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:49:34,636 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:49:34,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:49:34,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:49:34,839 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:49:34,839 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:49:35,770 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:49:35,770 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:49:35,771 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1308147342] [2021-10-07 15:49:35,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1308147342] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-07 15:49:35,771 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:49:35,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 12 [2021-10-07 15:49:35,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477239583] [2021-10-07 15:49:35,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-07 15:49:35,772 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:49:35,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-07 15:49:35,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:49:35,773 INFO L87 Difference]: Start difference. First operand 538 states and 2107 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:36,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:49:36,221 INFO L93 Difference]: Finished difference Result 760 states and 2722 transitions. [2021-10-07 15:49:36,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-07 15:49:36,222 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:49:36,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:49:36,223 INFO L225 Difference]: With dead ends: 760 [2021-10-07 15:49:36,224 INFO L226 Difference]: Without dead ends: 758 [2021-10-07 15:49:36,224 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 880.8ms TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2021-10-07 15:49:36,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2021-10-07 15:49:36,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 540. [2021-10-07 15:49:36,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 540 states, 539 states have (on average 3.9183673469387754) internal successors, (2112), 539 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:36,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 2112 transitions. [2021-10-07 15:49:36,234 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 2112 transitions. Word has length 20 [2021-10-07 15:49:36,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:49:36,234 INFO L470 AbstractCegarLoop]: Abstraction has 540 states and 2112 transitions. [2021-10-07 15:49:36,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:36,235 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 2112 transitions. [2021-10-07 15:49:36,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:49:36,236 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:49:36,236 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] [2021-10-07 15:49:36,247 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (82)] Ended with exit code 0 [2021-10-07 15:49:36,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:49:36,437 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:49:36,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:49:36,439 INFO L82 PathProgramCache]: Analyzing trace with hash 2125762691, now seen corresponding path program 35 times [2021-10-07 15:49:36,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:49:36,440 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2008094257] [2021-10-07 15:49:36,440 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:49:36,440 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:49:36,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:49:36,441 INFO L229 MonitoredProcess]: Starting monitored process 83 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:49:36,442 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (83)] Waiting until timeout for monitored process [2021-10-07 15:49:37,091 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:49:37,091 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:49:37,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:49:37,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:49:37,337 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:49:37,338 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:49:38,123 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:49:38,123 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:49:38,124 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2008094257] [2021-10-07 15:49:38,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2008094257] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:49:38,124 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:49:38,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-10-07 15:49:38,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773308027] [2021-10-07 15:49:38,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 15:49:38,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:49:38,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 15:49:38,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:49:38,126 INFO L87 Difference]: Start difference. First operand 540 states and 2112 transitions. Second operand has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:50,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:49:50,299 INFO L93 Difference]: Finished difference Result 1034 states and 3392 transitions. [2021-10-07 15:49:50,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-07 15:49:50,302 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:49:50,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:49:50,305 INFO L225 Difference]: With dead ends: 1034 [2021-10-07 15:49:50,305 INFO L226 Difference]: Without dead ends: 1034 [2021-10-07 15:49:50,305 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 4289.7ms TimeCoverageRelationStatistics Valid=243, Invalid=627, Unknown=0, NotChecked=0, Total=870 [2021-10-07 15:49:50,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2021-10-07 15:49:50,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 538. [2021-10-07 15:49:50,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 537 states have (on average 3.9236499068901303) internal successors, (2107), 537 states have internal predecessors, (2107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:50,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 2107 transitions. [2021-10-07 15:49:50,318 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 2107 transitions. Word has length 20 [2021-10-07 15:49:50,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:49:50,319 INFO L470 AbstractCegarLoop]: Abstraction has 538 states and 2107 transitions. [2021-10-07 15:49:50,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:50,319 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 2107 transitions. [2021-10-07 15:49:50,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:49:50,320 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:49:50,320 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] [2021-10-07 15:49:50,335 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (83)] Forceful destruction successful, exit code 0 [2021-10-07 15:49:50,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:49:50,521 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:49:50,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:49:50,522 INFO L82 PathProgramCache]: Analyzing trace with hash 399517451, now seen corresponding path program 36 times [2021-10-07 15:49:50,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:49:50,522 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [387317550] [2021-10-07 15:49:50,523 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:49:50,523 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:49:50,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:49:50,524 INFO L229 MonitoredProcess]: Starting monitored process 84 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:49:50,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (84)] Waiting until timeout for monitored process [2021-10-07 15:49:51,272 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-07 15:49:51,272 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:49:51,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:49:51,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:49:51,535 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:49:51,535 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:49:52,409 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:49:52,409 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:49:52,409 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [387317550] [2021-10-07 15:49:52,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [387317550] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:49:52,410 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:49:52,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-10-07 15:49:52,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055556777] [2021-10-07 15:49:52,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 15:49:52,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:49:52,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 15:49:52,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:49:52,411 INFO L87 Difference]: Start difference. First operand 538 states and 2107 transitions. Second operand has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:57,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:49:57,256 INFO L93 Difference]: Finished difference Result 1178 states and 3905 transitions. [2021-10-07 15:49:57,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-07 15:49:57,258 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:49:57,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:49:57,261 INFO L225 Difference]: With dead ends: 1178 [2021-10-07 15:49:57,261 INFO L226 Difference]: Without dead ends: 1178 [2021-10-07 15:49:57,261 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 2539.1ms TimeCoverageRelationStatistics Valid=236, Invalid=520, Unknown=0, NotChecked=0, Total=756 [2021-10-07 15:49:57,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1178 states. [2021-10-07 15:49:57,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1178 to 546. [2021-10-07 15:49:57,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 546 states, 545 states have (on average 3.9559633027522936) internal successors, (2156), 545 states have internal predecessors, (2156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:57,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 2156 transitions. [2021-10-07 15:49:57,276 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 2156 transitions. Word has length 20 [2021-10-07 15:49:57,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:49:57,276 INFO L470 AbstractCegarLoop]: Abstraction has 546 states and 2156 transitions. [2021-10-07 15:49:57,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:49:57,276 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 2156 transitions. [2021-10-07 15:49:57,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:49:57,283 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:49:57,283 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] [2021-10-07 15:49:57,295 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (84)] Forceful destruction successful, exit code 0 [2021-10-07 15:49:57,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 84 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:49:57,484 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:49:57,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:49:57,485 INFO L82 PathProgramCache]: Analyzing trace with hash -457573141, now seen corresponding path program 37 times [2021-10-07 15:49:57,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:49:57,486 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2073507132] [2021-10-07 15:49:57,486 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:49:57,487 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:49:57,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:49:57,487 INFO L229 MonitoredProcess]: Starting monitored process 85 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:49:57,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (85)] Waiting until timeout for monitored process [2021-10-07 15:49:58,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:49:58,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:49:58,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:49:58,401 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:49:58,401 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:49:59,248 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:49:59,249 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:49:59,249 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2073507132] [2021-10-07 15:49:59,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2073507132] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:49:59,249 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:49:59,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-10-07 15:49:59,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555619069] [2021-10-07 15:49:59,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 15:49:59,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:49:59,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 15:49:59,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:49:59,251 INFO L87 Difference]: Start difference. First operand 546 states and 2156 transitions. Second operand has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:50:04,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:50:04,262 INFO L93 Difference]: Finished difference Result 1188 states and 3901 transitions. [2021-10-07 15:50:04,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-07 15:50:04,264 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:50:04,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:50:04,267 INFO L225 Difference]: With dead ends: 1188 [2021-10-07 15:50:04,267 INFO L226 Difference]: Without dead ends: 1188 [2021-10-07 15:50:04,268 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 2504.8ms TimeCoverageRelationStatistics Valid=238, Invalid=518, Unknown=0, NotChecked=0, Total=756 [2021-10-07 15:50:04,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1188 states. [2021-10-07 15:50:04,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1188 to 542. [2021-10-07 15:50:04,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 541 states have (on average 3.9500924214417745) internal successors, (2137), 541 states have internal predecessors, (2137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:50:04,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 2137 transitions. [2021-10-07 15:50:04,286 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 2137 transitions. Word has length 20 [2021-10-07 15:50:04,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:50:04,286 INFO L470 AbstractCegarLoop]: Abstraction has 542 states and 2137 transitions. [2021-10-07 15:50:04,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:50:04,286 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 2137 transitions. [2021-10-07 15:50:04,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:50:04,288 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:50:04,288 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] [2021-10-07 15:50:04,302 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (85)] Forceful destruction successful, exit code 0 [2021-10-07 15:50:04,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:50:04,489 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:50:04,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:50:04,489 INFO L82 PathProgramCache]: Analyzing trace with hash 1366052615, now seen corresponding path program 14 times [2021-10-07 15:50:04,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:50:04,490 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [985593319] [2021-10-07 15:50:04,490 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:50:04,491 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:50:04,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:50:04,493 INFO L229 MonitoredProcess]: Starting monitored process 86 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:50:04,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (86)] Waiting until timeout for monitored process [2021-10-07 15:50:05,318 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:50:05,318 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:50:05,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:50:05,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:50:05,518 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:50:05,518 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:50:05,872 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:50:05,873 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:50:05,873 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [985593319] [2021-10-07 15:50:05,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [985593319] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-07 15:50:05,873 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:50:05,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 12 [2021-10-07 15:50:05,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670401067] [2021-10-07 15:50:05,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-07 15:50:05,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:50:05,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-07 15:50:05,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:50:05,875 INFO L87 Difference]: Start difference. First operand 542 states and 2137 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:50:06,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:50:06,324 INFO L93 Difference]: Finished difference Result 670 states and 2502 transitions. [2021-10-07 15:50:06,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-07 15:50:06,325 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:50:06,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:50:06,326 INFO L225 Difference]: With dead ends: 670 [2021-10-07 15:50:06,326 INFO L226 Difference]: Without dead ends: 658 [2021-10-07 15:50:06,327 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 457.8ms TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2021-10-07 15:50:06,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2021-10-07 15:50:06,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 554. [2021-10-07 15:50:06,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 553 states have (on average 3.9367088607594938) internal successors, (2177), 553 states have internal predecessors, (2177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:50:06,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 2177 transitions. [2021-10-07 15:50:06,339 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 2177 transitions. Word has length 20 [2021-10-07 15:50:06,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:50:06,339 INFO L470 AbstractCegarLoop]: Abstraction has 554 states and 2177 transitions. [2021-10-07 15:50:06,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:50:06,339 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 2177 transitions. [2021-10-07 15:50:06,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:50:06,341 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:50:06,341 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] [2021-10-07 15:50:06,353 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (86)] Forceful destruction successful, exit code 0 [2021-10-07 15:50:06,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 86 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:50:06,542 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:50:06,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:50:06,543 INFO L82 PathProgramCache]: Analyzing trace with hash -826818601, now seen corresponding path program 38 times [2021-10-07 15:50:06,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:50:06,544 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1370878548] [2021-10-07 15:50:06,544 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:50:06,545 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:50:06,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:50:06,546 INFO L229 MonitoredProcess]: Starting monitored process 87 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:50:06,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (87)] Waiting until timeout for monitored process [2021-10-07 15:50:07,369 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:50:07,369 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:50:07,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:50:07,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:50:07,637 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:50:07,637 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:50:07,951 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:50:07,951 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:50:07,951 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1370878548] [2021-10-07 15:50:07,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1370878548] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:50:07,952 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:50:07,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-10-07 15:50:07,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746219222] [2021-10-07 15:50:07,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 15:50:07,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:50:07,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 15:50:07,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:50:07,954 INFO L87 Difference]: Start difference. First operand 554 states and 2177 transitions. Second operand has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:50:09,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:50:09,340 INFO L93 Difference]: Finished difference Result 888 states and 3154 transitions. [2021-10-07 15:50:09,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-07 15:50:09,341 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:50:09,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:50:09,343 INFO L225 Difference]: With dead ends: 888 [2021-10-07 15:50:09,343 INFO L226 Difference]: Without dead ends: 888 [2021-10-07 15:50:09,344 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 848.9ms TimeCoverageRelationStatistics Valid=200, Invalid=400, Unknown=0, NotChecked=0, Total=600 [2021-10-07 15:50:09,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 888 states. [2021-10-07 15:50:09,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 888 to 546. [2021-10-07 15:50:09,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 546 states, 545 states have (on average 3.9394495412844037) internal successors, (2147), 545 states have internal predecessors, (2147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:50:09,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 2147 transitions. [2021-10-07 15:50:09,357 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 2147 transitions. Word has length 20 [2021-10-07 15:50:09,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:50:09,357 INFO L470 AbstractCegarLoop]: Abstraction has 546 states and 2147 transitions. [2021-10-07 15:50:09,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:50:09,357 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 2147 transitions. [2021-10-07 15:50:09,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:50:09,359 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:50:09,359 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] [2021-10-07 15:50:09,373 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (87)] Ended with exit code 0 [2021-10-07 15:50:09,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:50:09,560 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:50:09,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:50:09,561 INFO L82 PathProgramCache]: Analyzing trace with hash -586270953, now seen corresponding path program 39 times [2021-10-07 15:50:09,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:50:09,561 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1661658514] [2021-10-07 15:50:09,562 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:50:09,562 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:50:09,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:50:09,563 INFO L229 MonitoredProcess]: Starting monitored process 88 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:50:09,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (88)] Waiting until timeout for monitored process [2021-10-07 15:50:10,332 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 15:50:10,332 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:50:10,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:50:10,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:50:10,604 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:50:10,605 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:50:11,030 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:50:11,030 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:50:11,030 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1661658514] [2021-10-07 15:50:11,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1661658514] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-07 15:50:11,031 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:50:11,031 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 12 [2021-10-07 15:50:11,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124118729] [2021-10-07 15:50:11,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-07 15:50:11,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:50:11,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-07 15:50:11,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:50:11,032 INFO L87 Difference]: Start difference. First operand 546 states and 2147 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:50:11,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:50:11,399 INFO L93 Difference]: Finished difference Result 632 states and 2427 transitions. [2021-10-07 15:50:11,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-07 15:50:11,400 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:50:11,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:50:11,402 INFO L225 Difference]: With dead ends: 632 [2021-10-07 15:50:11,402 INFO L226 Difference]: Without dead ends: 630 [2021-10-07 15:50:11,402 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 542.4ms TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2021-10-07 15:50:11,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2021-10-07 15:50:11,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 548. [2021-10-07 15:50:11,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 547 states have (on average 3.9341864716636197) internal successors, (2152), 547 states have internal predecessors, (2152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:50:11,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 2152 transitions. [2021-10-07 15:50:11,414 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 2152 transitions. Word has length 20 [2021-10-07 15:50:11,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:50:11,414 INFO L470 AbstractCegarLoop]: Abstraction has 548 states and 2152 transitions. [2021-10-07 15:50:11,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:50:11,414 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 2152 transitions. [2021-10-07 15:50:11,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:50:11,416 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:50:11,416 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] [2021-10-07 15:50:11,428 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (88)] Forceful destruction successful, exit code 0 [2021-10-07 15:50:11,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 88 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:50:11,617 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:50:11,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:50:11,617 INFO L82 PathProgramCache]: Analyzing trace with hash 1408605615, now seen corresponding path program 40 times [2021-10-07 15:50:11,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:50:11,618 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1046044223] [2021-10-07 15:50:11,618 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:50:11,619 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:50:11,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:50:11,620 INFO L229 MonitoredProcess]: Starting monitored process 89 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:50:11,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (89)] Waiting until timeout for monitored process [2021-10-07 15:50:12,323 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:50:12,323 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:50:12,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:50:12,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:50:12,616 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:50:12,616 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:50:12,989 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:50:12,990 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:50:12,990 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1046044223] [2021-10-07 15:50:12,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1046044223] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:50:12,990 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:50:12,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-10-07 15:50:12,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457001897] [2021-10-07 15:50:12,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 15:50:12,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:50:12,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 15:50:12,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:50:12,992 INFO L87 Difference]: Start difference. First operand 548 states and 2152 transitions. Second operand has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:50:15,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:50:15,111 INFO L93 Difference]: Finished difference Result 1024 states and 3606 transitions. [2021-10-07 15:50:15,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-07 15:50:15,112 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:50:15,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:50:15,114 INFO L225 Difference]: With dead ends: 1024 [2021-10-07 15:50:15,114 INFO L226 Difference]: Without dead ends: 1024 [2021-10-07 15:50:15,114 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 1487.5ms TimeCoverageRelationStatistics Valid=292, Invalid=638, Unknown=0, NotChecked=0, Total=930 [2021-10-07 15:50:15,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1024 states. [2021-10-07 15:50:15,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1024 to 544. [2021-10-07 15:50:15,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 543 states have (on average 3.9447513812154695) internal successors, (2142), 543 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:50:15,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 2142 transitions. [2021-10-07 15:50:15,127 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 2142 transitions. Word has length 20 [2021-10-07 15:50:15,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:50:15,127 INFO L470 AbstractCegarLoop]: Abstraction has 544 states and 2142 transitions. [2021-10-07 15:50:15,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:50:15,127 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 2142 transitions. [2021-10-07 15:50:15,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:50:15,128 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:50:15,128 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] [2021-10-07 15:50:15,140 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (89)] Ended with exit code 0 [2021-10-07 15:50:15,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 89 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:50:15,329 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:50:15,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:50:15,330 INFO L82 PathProgramCache]: Analyzing trace with hash 589219691, now seen corresponding path program 41 times [2021-10-07 15:50:15,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:50:15,331 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1177358599] [2021-10-07 15:50:15,331 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:50:15,331 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:50:15,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:50:15,332 INFO L229 MonitoredProcess]: Starting monitored process 90 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:50:15,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (90)] Waiting until timeout for monitored process [2021-10-07 15:50:16,019 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:50:16,019 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:50:16,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:50:16,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:50:16,227 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:50:16,227 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:50:16,648 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:50:16,648 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:50:16,648 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1177358599] [2021-10-07 15:50:16,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1177358599] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-07 15:50:16,649 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:50:16,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 12 [2021-10-07 15:50:16,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180116298] [2021-10-07 15:50:16,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-07 15:50:16,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:50:16,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-07 15:50:16,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:50:16,652 INFO L87 Difference]: Start difference. First operand 544 states and 2142 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:50:17,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:50:17,142 INFO L93 Difference]: Finished difference Result 662 states and 2490 transitions. [2021-10-07 15:50:17,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-07 15:50:17,143 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:50:17,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:50:17,145 INFO L225 Difference]: With dead ends: 662 [2021-10-07 15:50:17,145 INFO L226 Difference]: Without dead ends: 660 [2021-10-07 15:50:17,145 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 541.0ms TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2021-10-07 15:50:17,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2021-10-07 15:50:17,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 548. [2021-10-07 15:50:17,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 547 states have (on average 3.9378427787934185) internal successors, (2154), 547 states have internal predecessors, (2154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:50:17,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 2154 transitions. [2021-10-07 15:50:17,156 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 2154 transitions. Word has length 20 [2021-10-07 15:50:17,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:50:17,156 INFO L470 AbstractCegarLoop]: Abstraction has 548 states and 2154 transitions. [2021-10-07 15:50:17,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:50:17,157 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 2154 transitions. [2021-10-07 15:50:17,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:50:17,158 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:50:17,158 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] [2021-10-07 15:50:17,172 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (90)] Forceful destruction successful, exit code 0 [2021-10-07 15:50:17,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 90 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:50:17,359 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:50:17,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:50:17,360 INFO L82 PathProgramCache]: Analyzing trace with hash -1710871037, now seen corresponding path program 42 times [2021-10-07 15:50:17,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:50:17,361 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [635050554] [2021-10-07 15:50:17,361 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:50:17,361 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:50:17,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:50:17,362 INFO L229 MonitoredProcess]: Starting monitored process 91 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:50:17,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (91)] Waiting until timeout for monitored process [2021-10-07 15:50:18,160 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-07 15:50:18,160 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:50:18,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:50:18,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:50:18,431 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:50:18,431 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:50:18,756 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:50:18,756 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:50:18,756 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [635050554] [2021-10-07 15:50:18,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [635050554] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:50:18,756 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:50:18,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-10-07 15:50:18,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231928053] [2021-10-07 15:50:18,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 15:50:18,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:50:18,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 15:50:18,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:50:18,758 INFO L87 Difference]: Start difference. First operand 548 states and 2154 transitions. Second operand has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:50:20,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:50:20,699 INFO L93 Difference]: Finished difference Result 1146 states and 3817 transitions. [2021-10-07 15:50:20,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-07 15:50:20,700 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:50:20,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:50:20,703 INFO L225 Difference]: With dead ends: 1146 [2021-10-07 15:50:20,703 INFO L226 Difference]: Without dead ends: 1146 [2021-10-07 15:50:20,703 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 1330.6ms TimeCoverageRelationStatistics Valid=266, Invalid=546, Unknown=0, NotChecked=0, Total=812 [2021-10-07 15:50:20,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1146 states. [2021-10-07 15:50:20,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1146 to 548. [2021-10-07 15:50:20,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 547 states have (on average 3.9414990859232177) internal successors, (2156), 547 states have internal predecessors, (2156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:50:20,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 2156 transitions. [2021-10-07 15:50:20,718 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 2156 transitions. Word has length 20 [2021-10-07 15:50:20,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:50:20,719 INFO L470 AbstractCegarLoop]: Abstraction has 548 states and 2156 transitions. [2021-10-07 15:50:20,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:50:20,719 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 2156 transitions. [2021-10-07 15:50:20,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:50:20,720 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:50:20,720 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] [2021-10-07 15:50:20,732 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (91)] Forceful destruction successful, exit code 0 [2021-10-07 15:50:20,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 91 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:50:20,921 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:50:20,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:50:20,922 INFO L82 PathProgramCache]: Analyzing trace with hash 1696440159, now seen corresponding path program 43 times [2021-10-07 15:50:20,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:50:20,923 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1585639198] [2021-10-07 15:50:20,923 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:50:20,923 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:50:20,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:50:20,924 INFO L229 MonitoredProcess]: Starting monitored process 92 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:50:20,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (92)] Waiting until timeout for monitored process [2021-10-07 15:50:21,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:50:21,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:50:21,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:50:21,817 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:50:21,817 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:50:22,164 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:50:22,165 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:50:22,165 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1585639198] [2021-10-07 15:50:22,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1585639198] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-07 15:50:22,165 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:50:22,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 12 [2021-10-07 15:50:22,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888156476] [2021-10-07 15:50:22,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-07 15:50:22,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:50:22,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-07 15:50:22,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:50:22,167 INFO L87 Difference]: Start difference. First operand 548 states and 2156 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:50:22,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:50:22,470 INFO L93 Difference]: Finished difference Result 644 states and 2455 transitions. [2021-10-07 15:50:22,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-07 15:50:22,471 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:50:22,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:50:22,472 INFO L225 Difference]: With dead ends: 644 [2021-10-07 15:50:22,472 INFO L226 Difference]: Without dead ends: 640 [2021-10-07 15:50:22,472 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 444.5ms TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2021-10-07 15:50:22,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2021-10-07 15:50:22,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 548. [2021-10-07 15:50:22,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 547 states have (on average 3.9378427787934185) internal successors, (2154), 547 states have internal predecessors, (2154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:50:22,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 2154 transitions. [2021-10-07 15:50:22,482 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 2154 transitions. Word has length 20 [2021-10-07 15:50:22,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:50:22,483 INFO L470 AbstractCegarLoop]: Abstraction has 548 states and 2154 transitions. [2021-10-07 15:50:22,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:50:22,483 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 2154 transitions. [2021-10-07 15:50:22,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:50:22,484 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:50:22,484 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] [2021-10-07 15:50:22,496 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (92)] Ended with exit code 0 [2021-10-07 15:50:22,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:50:22,685 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:50:22,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:50:22,686 INFO L82 PathProgramCache]: Analyzing trace with hash 1201163757, now seen corresponding path program 27 times [2021-10-07 15:50:22,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:50:22,686 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1593309588] [2021-10-07 15:50:22,687 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:50:22,687 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:50:22,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:50:22,688 INFO L229 MonitoredProcess]: Starting monitored process 93 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:50:22,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (93)] Waiting until timeout for monitored process [2021-10-07 15:50:23,531 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 15:50:23,532 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:50:23,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:50:23,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:50:23,832 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:50:23,832 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:50:24,381 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:50:24,381 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:50:24,382 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1593309588] [2021-10-07 15:50:24,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1593309588] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:50:24,382 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:50:24,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2021-10-07 15:50:24,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040431172] [2021-10-07 15:50:24,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 15:50:24,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:50:24,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 15:50:24,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:50:24,384 INFO L87 Difference]: Start difference. First operand 548 states and 2154 transitions. Second operand has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:50:28,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:50:28,941 INFO L93 Difference]: Finished difference Result 1450 states and 5000 transitions. [2021-10-07 15:50:28,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-07 15:50:28,943 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:50:28,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:50:28,947 INFO L225 Difference]: With dead ends: 1450 [2021-10-07 15:50:28,947 INFO L226 Difference]: Without dead ends: 1446 [2021-10-07 15:50:28,948 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 2808.3ms TimeCoverageRelationStatistics Valid=177, Invalid=423, Unknown=0, NotChecked=0, Total=600 [2021-10-07 15:50:28,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1446 states. [2021-10-07 15:50:28,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1446 to 572. [2021-10-07 15:50:28,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 571 states have (on average 3.998248686514886) internal successors, (2283), 571 states have internal predecessors, (2283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:50:28,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 2283 transitions. [2021-10-07 15:50:28,965 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 2283 transitions. Word has length 20 [2021-10-07 15:50:28,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:50:28,966 INFO L470 AbstractCegarLoop]: Abstraction has 572 states and 2283 transitions. [2021-10-07 15:50:28,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:50:28,966 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 2283 transitions. [2021-10-07 15:50:28,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:50:28,967 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:50:28,967 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] [2021-10-07 15:50:28,979 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (93)] Ended with exit code 0 [2021-10-07 15:50:29,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 93 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:50:29,168 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:50:29,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:50:29,169 INFO L82 PathProgramCache]: Analyzing trace with hash 1488194541, now seen corresponding path program 28 times [2021-10-07 15:50:29,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:50:29,170 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [559342137] [2021-10-07 15:50:29,170 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:50:29,170 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:50:29,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:50:29,171 INFO L229 MonitoredProcess]: Starting monitored process 94 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:50:29,172 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (94)] Waiting until timeout for monitored process [2021-10-07 15:50:29,932 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:50:29,932 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:50:29,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:50:29,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:50:30,239 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:50:30,239 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:50:30,700 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:50:30,701 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:50:30,701 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [559342137] [2021-10-07 15:50:30,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [559342137] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:50:30,701 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:50:30,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2021-10-07 15:50:30,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267987102] [2021-10-07 15:50:30,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 15:50:30,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:50:30,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 15:50:30,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:50:30,702 INFO L87 Difference]: Start difference. First operand 572 states and 2283 transitions. Second operand has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:50:33,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:50:33,389 INFO L93 Difference]: Finished difference Result 1460 states and 5045 transitions. [2021-10-07 15:50:33,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-07 15:50:33,390 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:50:33,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:50:33,394 INFO L225 Difference]: With dead ends: 1460 [2021-10-07 15:50:33,394 INFO L226 Difference]: Without dead ends: 1460 [2021-10-07 15:50:33,394 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 1641.4ms TimeCoverageRelationStatistics Valid=178, Invalid=472, Unknown=0, NotChecked=0, Total=650 [2021-10-07 15:50:33,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1460 states. [2021-10-07 15:50:33,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1460 to 576. [2021-10-07 15:50:33,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 575 states have (on average 4.005217391304348) internal successors, (2303), 575 states have internal predecessors, (2303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:50:33,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 2303 transitions. [2021-10-07 15:50:33,414 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 2303 transitions. Word has length 20 [2021-10-07 15:50:33,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:50:33,414 INFO L470 AbstractCegarLoop]: Abstraction has 576 states and 2303 transitions. [2021-10-07 15:50:33,415 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:50:33,415 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 2303 transitions. [2021-10-07 15:50:33,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:50:33,416 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:50:33,416 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] [2021-10-07 15:50:33,429 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (94)] Forceful destruction successful, exit code 0 [2021-10-07 15:50:33,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:50:33,617 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:50:33,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:50:33,618 INFO L82 PathProgramCache]: Analyzing trace with hash 1250910029, now seen corresponding path program 29 times [2021-10-07 15:50:33,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:50:33,619 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1800670414] [2021-10-07 15:50:33,619 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:50:33,619 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:50:33,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:50:33,621 INFO L229 MonitoredProcess]: Starting monitored process 95 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:50:33,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (95)] Waiting until timeout for monitored process [2021-10-07 15:50:34,365 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:50:34,365 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:50:34,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:50:34,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:50:34,663 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:50:34,664 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:50:35,037 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:50:35,038 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:50:35,038 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1800670414] [2021-10-07 15:50:35,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1800670414] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:50:35,038 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:50:35,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2021-10-07 15:50:35,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494773299] [2021-10-07 15:50:35,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 15:50:35,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:50:35,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 15:50:35,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:50:35,040 INFO L87 Difference]: Start difference. First operand 576 states and 2303 transitions. Second operand has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:50:37,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:50:37,237 INFO L93 Difference]: Finished difference Result 1330 states and 4621 transitions. [2021-10-07 15:50:37,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-07 15:50:37,239 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:50:37,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:50:37,242 INFO L225 Difference]: With dead ends: 1330 [2021-10-07 15:50:37,243 INFO L226 Difference]: Without dead ends: 1330 [2021-10-07 15:50:37,243 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 1098.1ms TimeCoverageRelationStatistics Valid=191, Invalid=511, Unknown=0, NotChecked=0, Total=702 [2021-10-07 15:50:37,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1330 states. [2021-10-07 15:50:37,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1330 to 574. [2021-10-07 15:50:37,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 573 states have (on average 4.006980802792321) internal successors, (2296), 573 states have internal predecessors, (2296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:50:37,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 2296 transitions. [2021-10-07 15:50:37,261 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 2296 transitions. Word has length 20 [2021-10-07 15:50:37,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:50:37,261 INFO L470 AbstractCegarLoop]: Abstraction has 574 states and 2296 transitions. [2021-10-07 15:50:37,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:50:37,262 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 2296 transitions. [2021-10-07 15:50:37,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:50:37,264 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:50:37,264 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] [2021-10-07 15:50:37,282 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (95)] Forceful destruction successful, exit code 0 [2021-10-07 15:50:37,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:50:37,478 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:50:37,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:50:37,478 INFO L82 PathProgramCache]: Analyzing trace with hash 2086962037, now seen corresponding path program 30 times [2021-10-07 15:50:37,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:50:37,479 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [232710861] [2021-10-07 15:50:37,479 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:50:37,479 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:50:37,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:50:37,481 INFO L229 MonitoredProcess]: Starting monitored process 96 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:50:37,482 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (96)] Waiting until timeout for monitored process [2021-10-07 15:50:38,352 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-07 15:50:38,352 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:50:38,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:50:38,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:50:38,653 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:50:38,654 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:50:39,317 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:50:39,318 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:50:39,318 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [232710861] [2021-10-07 15:50:39,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [232710861] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:50:39,318 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:50:39,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2021-10-07 15:50:39,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483889716] [2021-10-07 15:50:39,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 15:50:39,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:50:39,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 15:50:39,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:50:39,320 INFO L87 Difference]: Start difference. First operand 574 states and 2296 transitions. Second operand has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:50:44,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:50:44,348 INFO L93 Difference]: Finished difference Result 1250 states and 4373 transitions. [2021-10-07 15:50:44,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-07 15:50:44,350 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:50:44,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:50:44,353 INFO L225 Difference]: With dead ends: 1250 [2021-10-07 15:50:44,353 INFO L226 Difference]: Without dead ends: 1250 [2021-10-07 15:50:44,353 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 1301.8ms TimeCoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2021-10-07 15:50:44,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1250 states. [2021-10-07 15:50:44,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1250 to 584. [2021-10-07 15:50:44,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 584 states, 583 states have (on average 4.04631217838765) internal successors, (2359), 583 states have internal predecessors, (2359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:50:44,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 2359 transitions. [2021-10-07 15:50:44,371 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 2359 transitions. Word has length 20 [2021-10-07 15:50:44,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:50:44,371 INFO L470 AbstractCegarLoop]: Abstraction has 584 states and 2359 transitions. [2021-10-07 15:50:44,371 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:50:44,371 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 2359 transitions. [2021-10-07 15:50:44,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:50:44,372 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:50:44,373 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] [2021-10-07 15:50:44,385 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (96)] Forceful destruction successful, exit code 0 [2021-10-07 15:50:44,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:50:44,574 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:50:44,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:50:44,574 INFO L82 PathProgramCache]: Analyzing trace with hash -1920974475, now seen corresponding path program 31 times [2021-10-07 15:50:44,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:50:44,575 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1304754402] [2021-10-07 15:50:44,575 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:50:44,576 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:50:44,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:50:44,577 INFO L229 MonitoredProcess]: Starting monitored process 97 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:50:44,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (97)] Waiting until timeout for monitored process [2021-10-07 15:50:45,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:50:45,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:50:45,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:50:45,736 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:50:45,737 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:50:46,598 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:50:46,599 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:50:46,599 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1304754402] [2021-10-07 15:50:46,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1304754402] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:50:46,600 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:50:46,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2021-10-07 15:50:46,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140530073] [2021-10-07 15:50:46,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 15:50:46,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:50:46,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 15:50:46,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:50:46,601 INFO L87 Difference]: Start difference. First operand 584 states and 2359 transitions. Second operand has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:00,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:51:00,823 INFO L93 Difference]: Finished difference Result 1306 states and 4532 transitions. [2021-10-07 15:51:00,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-07 15:51:00,824 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:51:00,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:51:00,827 INFO L225 Difference]: With dead ends: 1306 [2021-10-07 15:51:00,827 INFO L226 Difference]: Without dead ends: 1306 [2021-10-07 15:51:00,828 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 2154.6ms TimeCoverageRelationStatistics Valid=183, Invalid=519, Unknown=0, NotChecked=0, Total=702 [2021-10-07 15:51:00,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1306 states. [2021-10-07 15:51:00,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1306 to 580. [2021-10-07 15:51:00,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 579 states have (on average 4.029360967184801) internal successors, (2333), 579 states have internal predecessors, (2333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:00,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 2333 transitions. [2021-10-07 15:51:00,845 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 2333 transitions. Word has length 20 [2021-10-07 15:51:00,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:51:00,845 INFO L470 AbstractCegarLoop]: Abstraction has 580 states and 2333 transitions. [2021-10-07 15:51:00,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:00,845 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 2333 transitions. [2021-10-07 15:51:00,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:51:00,846 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:51:00,846 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] [2021-10-07 15:51:00,858 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (97)] Ended with exit code 0 [2021-10-07 15:51:01,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:51:01,047 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:51:01,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:51:01,048 INFO L82 PathProgramCache]: Analyzing trace with hash 2081710485, now seen corresponding path program 32 times [2021-10-07 15:51:01,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:51:01,049 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1812176421] [2021-10-07 15:51:01,049 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:51:01,049 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:51:01,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:51:01,051 INFO L229 MonitoredProcess]: Starting monitored process 98 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:51:01,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (98)] Waiting until timeout for monitored process [2021-10-07 15:51:01,877 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:51:01,878 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:51:01,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:51:01,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:51:02,167 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:51:02,167 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:51:03,820 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:51:03,820 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:51:03,820 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1812176421] [2021-10-07 15:51:03,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1812176421] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:51:03,821 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:51:03,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2021-10-07 15:51:03,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792678141] [2021-10-07 15:51:03,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 15:51:03,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:51:03,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 15:51:03,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:51:03,822 INFO L87 Difference]: Start difference. First operand 580 states and 2333 transitions. Second operand has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:15,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:51:15,172 INFO L93 Difference]: Finished difference Result 1156 states and 4062 transitions. [2021-10-07 15:51:15,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-07 15:51:15,174 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:51:15,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:51:15,178 INFO L225 Difference]: With dead ends: 1156 [2021-10-07 15:51:15,178 INFO L226 Difference]: Without dead ends: 1152 [2021-10-07 15:51:15,178 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 3061.4ms TimeCoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2021-10-07 15:51:15,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1152 states. [2021-10-07 15:51:15,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1152 to 588. [2021-10-07 15:51:15,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 588 states, 587 states have (on average 4.03236797274276) internal successors, (2367), 587 states have internal predecessors, (2367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:15,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 2367 transitions. [2021-10-07 15:51:15,195 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 2367 transitions. Word has length 20 [2021-10-07 15:51:15,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:51:15,195 INFO L470 AbstractCegarLoop]: Abstraction has 588 states and 2367 transitions. [2021-10-07 15:51:15,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:15,195 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 2367 transitions. [2021-10-07 15:51:15,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:51:15,196 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:51:15,197 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] [2021-10-07 15:51:15,209 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (98)] Forceful destruction successful, exit code 0 [2021-10-07 15:51:15,397 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 [2021-10-07 15:51:15,398 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:51:15,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:51:15,399 INFO L82 PathProgramCache]: Analyzing trace with hash -1710230663, now seen corresponding path program 15 times [2021-10-07 15:51:15,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:51:15,400 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1643437191] [2021-10-07 15:51:15,400 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:51:15,400 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:51:15,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:51:15,401 INFO L229 MonitoredProcess]: Starting monitored process 99 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:51:15,404 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (99)] Waiting until timeout for monitored process [2021-10-07 15:51:16,222 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 15:51:16,222 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:51:16,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:51:16,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:51:16,478 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:51:16,478 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:51:17,591 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:51:17,592 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:51:17,592 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1643437191] [2021-10-07 15:51:17,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1643437191] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:51:17,606 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:51:17,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-10-07 15:51:17,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4615841] [2021-10-07 15:51:17,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 15:51:17,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:51:17,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 15:51:17,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:51:17,608 INFO L87 Difference]: Start difference. First operand 588 states and 2367 transitions. Second operand has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:30,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:51:30,326 INFO L93 Difference]: Finished difference Result 1094 states and 3775 transitions. [2021-10-07 15:51:30,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-07 15:51:30,328 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:51:30,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:51:30,331 INFO L225 Difference]: With dead ends: 1094 [2021-10-07 15:51:30,331 INFO L226 Difference]: Without dead ends: 1094 [2021-10-07 15:51:30,332 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 4600.8ms TimeCoverageRelationStatistics Valid=243, Invalid=627, Unknown=0, NotChecked=0, Total=870 [2021-10-07 15:51:30,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1094 states. [2021-10-07 15:51:30,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1094 to 586. [2021-10-07 15:51:30,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 586 states, 585 states have (on average 4.023931623931624) internal successors, (2354), 585 states have internal predecessors, (2354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:30,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 2354 transitions. [2021-10-07 15:51:30,346 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 2354 transitions. Word has length 20 [2021-10-07 15:51:30,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:51:30,346 INFO L470 AbstractCegarLoop]: Abstraction has 586 states and 2354 transitions. [2021-10-07 15:51:30,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:30,346 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 2354 transitions. [2021-10-07 15:51:30,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:51:30,348 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:51:30,348 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] [2021-10-07 15:51:30,361 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (99)] Forceful destruction successful, exit code 0 [2021-10-07 15:51:30,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 99 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:51:30,549 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:51:30,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:51:30,550 INFO L82 PathProgramCache]: Analyzing trace with hash -1521567695, now seen corresponding path program 33 times [2021-10-07 15:51:30,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:51:30,551 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [134459378] [2021-10-07 15:51:30,551 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:51:30,551 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:51:30,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:51:30,552 INFO L229 MonitoredProcess]: Starting monitored process 100 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:51:30,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (100)] Waiting until timeout for monitored process [2021-10-07 15:51:31,397 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 15:51:31,398 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:51:31,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-07 15:51:31,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:51:31,529 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:51:31,529 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:51:31,644 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:51:31,644 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:51:31,645 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [134459378] [2021-10-07 15:51:31,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [134459378] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:51:31,645 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:51:31,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 7 [2021-10-07 15:51:31,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441607013] [2021-10-07 15:51:31,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-07 15:51:31,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:51:31,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-07 15:51:31,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-07 15:51:31,647 INFO L87 Difference]: Start difference. First operand 586 states and 2354 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:31,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:51:31,945 INFO L93 Difference]: Finished difference Result 836 states and 3135 transitions. [2021-10-07 15:51:31,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-07 15:51:31,946 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:51:31,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:51:31,948 INFO L225 Difference]: With dead ends: 836 [2021-10-07 15:51:31,948 INFO L226 Difference]: Without dead ends: 822 [2021-10-07 15:51:31,948 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 125.6ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-07 15:51:31,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2021-10-07 15:51:31,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 618. [2021-10-07 15:51:31,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 618 states, 617 states have (on average 4.011345218800648) internal successors, (2475), 617 states have internal predecessors, (2475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:31,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 2475 transitions. [2021-10-07 15:51:31,970 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 2475 transitions. Word has length 20 [2021-10-07 15:51:31,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:51:31,971 INFO L470 AbstractCegarLoop]: Abstraction has 618 states and 2475 transitions. [2021-10-07 15:51:31,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:31,971 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 2475 transitions. [2021-10-07 15:51:31,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:51:31,972 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:51:31,973 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] [2021-10-07 15:51:31,985 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (100)] Ended with exit code 0 [2021-10-07 15:51:32,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 100 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:51:32,175 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:51:32,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:51:32,176 INFO L82 PathProgramCache]: Analyzing trace with hash -1390924777, now seen corresponding path program 44 times [2021-10-07 15:51:32,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:51:32,177 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [572179937] [2021-10-07 15:51:32,177 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:51:32,177 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:51:32,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:51:32,178 INFO L229 MonitoredProcess]: Starting monitored process 101 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:51:32,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (101)] Waiting until timeout for monitored process [2021-10-07 15:51:33,063 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:51:33,063 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:51:33,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:51:33,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:51:33,273 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:51:33,273 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:51:33,996 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:51:33,996 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:51:33,996 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [572179937] [2021-10-07 15:51:33,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [572179937] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-07 15:51:33,997 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:51:33,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 12 [2021-10-07 15:51:33,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837662830] [2021-10-07 15:51:33,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-07 15:51:33,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:51:33,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-07 15:51:33,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:51:33,998 INFO L87 Difference]: Start difference. First operand 618 states and 2475 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:34,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:51:34,518 INFO L93 Difference]: Finished difference Result 868 states and 3243 transitions. [2021-10-07 15:51:34,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-07 15:51:34,519 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:51:34,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:51:34,522 INFO L225 Difference]: With dead ends: 868 [2021-10-07 15:51:34,522 INFO L226 Difference]: Without dead ends: 866 [2021-10-07 15:51:34,522 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 679.7ms TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2021-10-07 15:51:34,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2021-10-07 15:51:34,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 620. [2021-10-07 15:51:34,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 620 states, 619 states have (on average 4.006462035541196) internal successors, (2480), 619 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:34,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 2480 transitions. [2021-10-07 15:51:34,537 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 2480 transitions. Word has length 20 [2021-10-07 15:51:34,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:51:34,538 INFO L470 AbstractCegarLoop]: Abstraction has 620 states and 2480 transitions. [2021-10-07 15:51:34,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:34,538 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 2480 transitions. [2021-10-07 15:51:34,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:51:34,539 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:51:34,540 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] [2021-10-07 15:51:34,552 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (101)] Ended with exit code 0 [2021-10-07 15:51:34,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:51:34,740 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:51:34,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:51:34,741 INFO L82 PathProgramCache]: Analyzing trace with hash 603951791, now seen corresponding path program 45 times [2021-10-07 15:51:34,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:51:34,742 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [524000310] [2021-10-07 15:51:34,742 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:51:34,742 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:51:34,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:51:34,744 INFO L229 MonitoredProcess]: Starting monitored process 102 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:51:34,745 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (102)] Waiting until timeout for monitored process [2021-10-07 15:51:35,636 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 15:51:35,636 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:51:35,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:51:35,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:51:35,948 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:51:35,948 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:51:36,790 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:51:36,791 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:51:36,791 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [524000310] [2021-10-07 15:51:36,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [524000310] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:51:36,791 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:51:36,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-10-07 15:51:36,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680257414] [2021-10-07 15:51:36,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 15:51:36,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:51:36,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 15:51:36,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:51:36,793 INFO L87 Difference]: Start difference. First operand 620 states and 2480 transitions. Second operand has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:47,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:51:47,461 INFO L93 Difference]: Finished difference Result 1340 states and 4508 transitions. [2021-10-07 15:51:47,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-07 15:51:47,463 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:51:47,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:51:47,467 INFO L225 Difference]: With dead ends: 1340 [2021-10-07 15:51:47,467 INFO L226 Difference]: Without dead ends: 1340 [2021-10-07 15:51:47,467 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 3786.9ms TimeCoverageRelationStatistics Valid=232, Invalid=580, Unknown=0, NotChecked=0, Total=812 [2021-10-07 15:51:47,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1340 states. [2021-10-07 15:51:47,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1340 to 624. [2021-10-07 15:51:47,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 624 states, 623 states have (on average 4.032102728731942) internal successors, (2512), 623 states have internal predecessors, (2512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:47,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 624 states to 624 states and 2512 transitions. [2021-10-07 15:51:47,485 INFO L78 Accepts]: Start accepts. Automaton has 624 states and 2512 transitions. Word has length 20 [2021-10-07 15:51:47,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:51:47,486 INFO L470 AbstractCegarLoop]: Abstraction has 624 states and 2512 transitions. [2021-10-07 15:51:47,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:47,486 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states and 2512 transitions. [2021-10-07 15:51:47,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:51:47,487 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:51:47,487 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] [2021-10-07 15:51:47,499 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (102)] Ended with exit code 0 [2021-10-07 15:51:47,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:51:47,688 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:51:47,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:51:47,689 INFO L82 PathProgramCache]: Analyzing trace with hash 591325361, now seen corresponding path program 34 times [2021-10-07 15:51:47,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:51:47,690 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2101344470] [2021-10-07 15:51:47,690 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:51:47,690 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:51:47,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:51:47,692 INFO L229 MonitoredProcess]: Starting monitored process 103 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:51:47,704 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (103)] Waiting until timeout for monitored process [2021-10-07 15:51:48,565 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:51:48,566 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:51:48,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:51:48,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:51:48,767 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:51:48,768 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:51:49,667 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:51:49,668 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:51:49,668 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2101344470] [2021-10-07 15:51:49,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2101344470] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-07 15:51:49,668 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:51:49,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-10-07 15:51:49,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202701014] [2021-10-07 15:51:49,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-07 15:51:49,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:51:49,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-07 15:51:49,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:51:49,670 INFO L87 Difference]: Start difference. First operand 624 states and 2512 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:49,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:51:50,000 INFO L93 Difference]: Finished difference Result 826 states and 3107 transitions. [2021-10-07 15:51:50,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-07 15:51:50,001 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:51:50,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:51:50,003 INFO L225 Difference]: With dead ends: 826 [2021-10-07 15:51:50,003 INFO L226 Difference]: Without dead ends: 826 [2021-10-07 15:51:50,003 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 729.5ms TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:51:50,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 826 states. [2021-10-07 15:51:50,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 826 to 628. [2021-10-07 15:51:50,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 627 states have (on average 4.031897926634769) internal successors, (2528), 627 states have internal predecessors, (2528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:50,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 2528 transitions. [2021-10-07 15:51:50,016 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 2528 transitions. Word has length 20 [2021-10-07 15:51:50,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:51:50,017 INFO L470 AbstractCegarLoop]: Abstraction has 628 states and 2528 transitions. [2021-10-07 15:51:50,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:50,017 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 2528 transitions. [2021-10-07 15:51:50,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:51:50,018 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:51:50,018 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] [2021-10-07 15:51:50,030 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (103)] Forceful destruction successful, exit code 0 [2021-10-07 15:51:50,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 103 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:51:50,219 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:51:50,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:51:50,220 INFO L82 PathProgramCache]: Analyzing trace with hash 1560987281, now seen corresponding path program 35 times [2021-10-07 15:51:50,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:51:50,220 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1021526170] [2021-10-07 15:51:50,221 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:51:50,221 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:51:50,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:51:50,222 INFO L229 MonitoredProcess]: Starting monitored process 104 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:51:50,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (104)] Waiting until timeout for monitored process [2021-10-07 15:51:51,076 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:51:51,076 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:51:51,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:51:51,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:51:51,284 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:51:51,284 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:51:51,995 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:51:51,996 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:51:51,996 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1021526170] [2021-10-07 15:51:51,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1021526170] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-07 15:51:51,996 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:51:51,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-10-07 15:51:51,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034380622] [2021-10-07 15:51:51,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-07 15:51:51,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:51:51,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-07 15:51:51,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:51:51,998 INFO L87 Difference]: Start difference. First operand 628 states and 2528 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:52,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:51:52,254 INFO L93 Difference]: Finished difference Result 812 states and 3075 transitions. [2021-10-07 15:51:52,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-07 15:51:52,255 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:51:52,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:51:52,257 INFO L225 Difference]: With dead ends: 812 [2021-10-07 15:51:52,257 INFO L226 Difference]: Without dead ends: 804 [2021-10-07 15:51:52,258 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 583.7ms TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:51:52,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2021-10-07 15:51:52,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 628. [2021-10-07 15:51:52,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 627 states have (on average 4.025518341307815) internal successors, (2524), 627 states have internal predecessors, (2524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:52,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 2524 transitions. [2021-10-07 15:51:52,271 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 2524 transitions. Word has length 20 [2021-10-07 15:51:52,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:51:52,272 INFO L470 AbstractCegarLoop]: Abstraction has 628 states and 2524 transitions. [2021-10-07 15:51:52,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:51:52,272 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 2524 transitions. [2021-10-07 15:51:52,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:51:52,274 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:51:52,274 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] [2021-10-07 15:51:52,286 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (104)] Ended with exit code 0 [2021-10-07 15:51:52,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 104 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:51:52,475 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:51:52,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:51:52,475 INFO L82 PathProgramCache]: Analyzing trace with hash -88733009, now seen corresponding path program 46 times [2021-10-07 15:51:52,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:51:52,476 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1427887701] [2021-10-07 15:51:52,476 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:51:52,476 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:51:52,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:51:52,478 INFO L229 MonitoredProcess]: Starting monitored process 105 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:51:52,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (105)] Waiting until timeout for monitored process [2021-10-07 15:51:53,318 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:51:53,319 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:51:53,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:51:53,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:51:53,588 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:51:53,589 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:51:54,962 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:51:54,963 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:51:54,963 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1427887701] [2021-10-07 15:51:54,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1427887701] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:51:54,963 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:51:54,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-10-07 15:51:54,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432515640] [2021-10-07 15:51:54,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 15:51:54,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:51:54,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 15:51:54,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:51:54,965 INFO L87 Difference]: Start difference. First operand 628 states and 2524 transitions. Second operand has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:52:08,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:52:08,708 INFO L93 Difference]: Finished difference Result 1118 states and 3828 transitions. [2021-10-07 15:52:08,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-07 15:52:08,709 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:52:08,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:52:08,712 INFO L225 Difference]: With dead ends: 1118 [2021-10-07 15:52:08,712 INFO L226 Difference]: Without dead ends: 1118 [2021-10-07 15:52:08,713 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 4619.4ms TimeCoverageRelationStatistics Valid=268, Invalid=662, Unknown=0, NotChecked=0, Total=930 [2021-10-07 15:52:08,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1118 states. [2021-10-07 15:52:08,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1118 to 630. [2021-10-07 15:52:08,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 630 states, 629 states have (on average 4.027027027027027) internal successors, (2533), 629 states have internal predecessors, (2533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:52:08,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 2533 transitions. [2021-10-07 15:52:08,729 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 2533 transitions. Word has length 20 [2021-10-07 15:52:08,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:52:08,729 INFO L470 AbstractCegarLoop]: Abstraction has 630 states and 2533 transitions. [2021-10-07 15:52:08,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:52:08,729 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 2533 transitions. [2021-10-07 15:52:08,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:52:08,732 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:52:08,732 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] [2021-10-07 15:52:08,748 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (105)] Forceful destruction successful, exit code 0 [2021-10-07 15:52:08,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 105 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:52:08,948 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:52:08,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:52:08,949 INFO L82 PathProgramCache]: Analyzing trace with hash 1746202321, now seen corresponding path program 16 times [2021-10-07 15:52:08,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:52:08,949 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [579734036] [2021-10-07 15:52:08,950 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:52:08,950 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:52:08,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:52:08,951 INFO L229 MonitoredProcess]: Starting monitored process 106 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:52:08,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (106)] Waiting until timeout for monitored process [2021-10-07 15:52:09,822 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:52:09,823 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:52:09,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:52:09,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:52:10,077 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:52:10,078 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:52:10,549 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:52:10,550 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:52:10,550 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [579734036] [2021-10-07 15:52:10,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [579734036] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:52:10,550 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:52:10,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-10-07 15:52:10,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807004837] [2021-10-07 15:52:10,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 15:52:10,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:52:10,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 15:52:10,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:52:10,552 INFO L87 Difference]: Start difference. First operand 630 states and 2533 transitions. Second operand has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:52:13,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:52:13,927 INFO L93 Difference]: Finished difference Result 1294 states and 4483 transitions. [2021-10-07 15:52:13,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-07 15:52:13,927 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:52:13,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:52:13,930 INFO L225 Difference]: With dead ends: 1294 [2021-10-07 15:52:13,930 INFO L226 Difference]: Without dead ends: 1294 [2021-10-07 15:52:13,931 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 2405.8ms TimeCoverageRelationStatistics Valid=263, Invalid=607, Unknown=0, NotChecked=0, Total=870 [2021-10-07 15:52:13,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1294 states. [2021-10-07 15:52:13,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1294 to 626. [2021-10-07 15:52:13,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 626 states, 625 states have (on average 4.0288) internal successors, (2518), 625 states have internal predecessors, (2518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:52:13,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 2518 transitions. [2021-10-07 15:52:13,947 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 2518 transitions. Word has length 20 [2021-10-07 15:52:13,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:52:13,948 INFO L470 AbstractCegarLoop]: Abstraction has 626 states and 2518 transitions. [2021-10-07 15:52:13,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:52:13,948 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 2518 transitions. [2021-10-07 15:52:13,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:52:13,949 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:52:13,949 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] [2021-10-07 15:52:13,961 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (106)] Ended with exit code 0 [2021-10-07 15:52:14,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:52:14,150 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:52:14,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:52:14,151 INFO L82 PathProgramCache]: Analyzing trace with hash -1264030525, now seen corresponding path program 47 times [2021-10-07 15:52:14,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:52:14,151 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [44094190] [2021-10-07 15:52:14,152 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:52:14,152 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:52:14,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:52:14,153 INFO L229 MonitoredProcess]: Starting monitored process 107 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:52:14,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (107)] Waiting until timeout for monitored process [2021-10-07 15:52:14,953 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:52:14,953 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:52:14,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:52:14,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:52:15,172 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:52:15,172 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:52:15,649 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:52:15,650 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:52:15,650 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [44094190] [2021-10-07 15:52:15,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [44094190] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-07 15:52:15,650 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:52:15,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 12 [2021-10-07 15:52:15,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578545838] [2021-10-07 15:52:15,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-07 15:52:15,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:52:15,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-07 15:52:15,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:52:15,652 INFO L87 Difference]: Start difference. First operand 626 states and 2518 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:52:16,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:52:16,013 INFO L93 Difference]: Finished difference Result 806 states and 3066 transitions. [2021-10-07 15:52:16,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-07 15:52:16,013 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:52:16,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:52:16,015 INFO L225 Difference]: With dead ends: 806 [2021-10-07 15:52:16,015 INFO L226 Difference]: Without dead ends: 804 [2021-10-07 15:52:16,015 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 487.4ms TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2021-10-07 15:52:16,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2021-10-07 15:52:16,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 630. [2021-10-07 15:52:16,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 630 states, 629 states have (on average 4.022257551669316) internal successors, (2530), 629 states have internal predecessors, (2530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:52:16,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 2530 transitions. [2021-10-07 15:52:16,035 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 2530 transitions. Word has length 20 [2021-10-07 15:52:16,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:52:16,036 INFO L470 AbstractCegarLoop]: Abstraction has 630 states and 2530 transitions. [2021-10-07 15:52:16,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:52:16,036 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 2530 transitions. [2021-10-07 15:52:16,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:52:16,037 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:52:16,037 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] [2021-10-07 15:52:16,049 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (107)] Forceful destruction successful, exit code 0 [2021-10-07 15:52:16,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 107 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:52:16,238 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:52:16,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:52:16,239 INFO L82 PathProgramCache]: Analyzing trace with hash 730846043, now seen corresponding path program 48 times [2021-10-07 15:52:16,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:52:16,240 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2027434741] [2021-10-07 15:52:16,240 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:52:16,240 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:52:16,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:52:16,241 INFO L229 MonitoredProcess]: Starting monitored process 108 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:52:16,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (108)] Waiting until timeout for monitored process [2021-10-07 15:52:17,205 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-07 15:52:17,205 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:52:17,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:52:17,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:52:17,484 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:52:17,484 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:52:17,915 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:52:17,916 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:52:17,916 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2027434741] [2021-10-07 15:52:17,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2027434741] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:52:17,916 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:52:17,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-10-07 15:52:17,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665701032] [2021-10-07 15:52:17,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 15:52:17,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:52:17,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 15:52:17,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:52:17,918 INFO L87 Difference]: Start difference. First operand 630 states and 2530 transitions. Second operand has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:52:20,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:52:20,585 INFO L93 Difference]: Finished difference Result 1240 states and 4229 transitions. [2021-10-07 15:52:20,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-07 15:52:20,587 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:52:20,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:52:20,590 INFO L225 Difference]: With dead ends: 1240 [2021-10-07 15:52:20,590 INFO L226 Difference]: Without dead ends: 1240 [2021-10-07 15:52:20,590 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 1816.1ms TimeCoverageRelationStatistics Valid=199, Invalid=451, Unknown=0, NotChecked=0, Total=650 [2021-10-07 15:52:20,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2021-10-07 15:52:20,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 628. [2021-10-07 15:52:20,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 627 states have (on average 4.027113237639553) internal successors, (2525), 627 states have internal predecessors, (2525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:52:20,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 2525 transitions. [2021-10-07 15:52:20,607 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 2525 transitions. Word has length 20 [2021-10-07 15:52:20,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:52:20,608 INFO L470 AbstractCegarLoop]: Abstraction has 628 states and 2525 transitions. [2021-10-07 15:52:20,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:52:20,608 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 2525 transitions. [2021-10-07 15:52:20,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:52:20,609 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:52:20,609 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] [2021-10-07 15:52:20,623 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (108)] Ended with exit code 0 [2021-10-07 15:52:20,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 108 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:52:20,810 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:52:20,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:52:20,811 INFO L82 PathProgramCache]: Analyzing trace with hash -156810057, now seen corresponding path program 49 times [2021-10-07 15:52:20,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:52:20,812 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [55883688] [2021-10-07 15:52:20,812 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:52:20,812 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:52:20,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:52:20,814 INFO L229 MonitoredProcess]: Starting monitored process 109 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:52:20,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (109)] Waiting until timeout for monitored process [2021-10-07 15:52:21,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:52:21,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:52:21,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:52:21,953 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:52:21,953 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:52:22,384 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:52:22,384 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:52:22,384 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [55883688] [2021-10-07 15:52:22,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [55883688] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-07 15:52:22,385 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:52:22,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 12 [2021-10-07 15:52:22,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815422228] [2021-10-07 15:52:22,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-07 15:52:22,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:52:22,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-07 15:52:22,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:52:22,386 INFO L87 Difference]: Start difference. First operand 628 states and 2525 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:52:22,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:52:22,706 INFO L93 Difference]: Finished difference Result 798 states and 3039 transitions. [2021-10-07 15:52:22,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-07 15:52:22,707 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:52:22,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:52:22,709 INFO L225 Difference]: With dead ends: 798 [2021-10-07 15:52:22,709 INFO L226 Difference]: Without dead ends: 794 [2021-10-07 15:52:22,709 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 461.2ms TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2021-10-07 15:52:22,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 794 states. [2021-10-07 15:52:22,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 794 to 626. [2021-10-07 15:52:22,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 626 states, 625 states have (on average 4.0288) internal successors, (2518), 625 states have internal predecessors, (2518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:52:22,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 2518 transitions. [2021-10-07 15:52:22,721 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 2518 transitions. Word has length 20 [2021-10-07 15:52:22,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:52:22,721 INFO L470 AbstractCegarLoop]: Abstraction has 626 states and 2518 transitions. [2021-10-07 15:52:22,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:52:22,721 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 2518 transitions. [2021-10-07 15:52:22,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:52:22,722 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:52:22,723 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] [2021-10-07 15:52:22,736 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (109)] Forceful destruction successful, exit code 0 [2021-10-07 15:52:22,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 109 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:52:22,929 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:52:22,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:52:22,930 INFO L82 PathProgramCache]: Analyzing trace with hash -1551362619, now seen corresponding path program 36 times [2021-10-07 15:52:22,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:52:22,931 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [360847709] [2021-10-07 15:52:22,931 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:52:22,931 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:52:22,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:52:22,932 INFO L229 MonitoredProcess]: Starting monitored process 110 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:52:22,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (110)] Waiting until timeout for monitored process [2021-10-07 15:52:23,864 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-07 15:52:23,864 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:52:23,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:52:23,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:52:24,048 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:52:24,048 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:52:24,430 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:52:24,431 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:52:24,431 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [360847709] [2021-10-07 15:52:24,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [360847709] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-07 15:52:24,431 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:52:24,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-10-07 15:52:24,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346212461] [2021-10-07 15:52:24,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-07 15:52:24,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:52:24,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-07 15:52:24,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:52:24,433 INFO L87 Difference]: Start difference. First operand 626 states and 2518 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:52:24,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:52:24,732 INFO L93 Difference]: Finished difference Result 818 states and 3092 transitions. [2021-10-07 15:52:24,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-07 15:52:24,733 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:52:24,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:52:24,735 INFO L225 Difference]: With dead ends: 818 [2021-10-07 15:52:24,735 INFO L226 Difference]: Without dead ends: 818 [2021-10-07 15:52:24,735 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 321.1ms TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:52:24,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2021-10-07 15:52:24,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 630. [2021-10-07 15:52:24,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 630 states, 629 states have (on average 4.02543720190779) internal successors, (2532), 629 states have internal predecessors, (2532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:52:24,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 2532 transitions. [2021-10-07 15:52:24,747 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 2532 transitions. Word has length 20 [2021-10-07 15:52:24,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:52:24,747 INFO L470 AbstractCegarLoop]: Abstraction has 630 states and 2532 transitions. [2021-10-07 15:52:24,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:52:24,747 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 2532 transitions. [2021-10-07 15:52:24,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:52:24,748 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:52:24,748 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] [2021-10-07 15:52:24,760 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (110)] Forceful destruction successful, exit code 0 [2021-10-07 15:52:24,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:52:24,949 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:52:24,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:52:24,950 INFO L82 PathProgramCache]: Analyzing trace with hash 555421501, now seen corresponding path program 37 times [2021-10-07 15:52:24,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:52:24,951 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [228056008] [2021-10-07 15:52:24,951 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:52:24,951 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:52:24,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:52:24,952 INFO L229 MonitoredProcess]: Starting monitored process 111 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:52:24,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (111)] Waiting until timeout for monitored process [2021-10-07 15:52:25,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:52:25,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:52:25,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:52:25,959 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:52:25,959 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:52:26,460 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:52:26,460 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:52:26,460 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [228056008] [2021-10-07 15:52:26,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [228056008] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-07 15:52:26,461 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:52:26,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-10-07 15:52:26,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147768111] [2021-10-07 15:52:26,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-07 15:52:26,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:52:26,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-07 15:52:26,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:52:26,462 INFO L87 Difference]: Start difference. First operand 630 states and 2532 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:52:26,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:52:26,795 INFO L93 Difference]: Finished difference Result 804 states and 3047 transitions. [2021-10-07 15:52:26,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-07 15:52:26,796 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:52:26,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:52:26,799 INFO L225 Difference]: With dead ends: 804 [2021-10-07 15:52:26,799 INFO L226 Difference]: Without dead ends: 804 [2021-10-07 15:52:26,799 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 442.5ms TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:52:26,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2021-10-07 15:52:26,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 632. [2021-10-07 15:52:26,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 632 states, 631 states have (on average 4.0269413629160065) internal successors, (2541), 631 states have internal predecessors, (2541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:52:26,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 632 states to 632 states and 2541 transitions. [2021-10-07 15:52:26,812 INFO L78 Accepts]: Start accepts. Automaton has 632 states and 2541 transitions. Word has length 20 [2021-10-07 15:52:26,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:52:26,812 INFO L470 AbstractCegarLoop]: Abstraction has 632 states and 2541 transitions. [2021-10-07 15:52:26,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:52:26,812 INFO L276 IsEmpty]: Start isEmpty. Operand 632 states and 2541 transitions. [2021-10-07 15:52:26,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:52:26,813 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:52:26,813 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] [2021-10-07 15:52:26,825 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (111)] Forceful destruction successful, exit code 0 [2021-10-07 15:52:27,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 111 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:52:27,014 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:52:27,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:52:27,015 INFO L82 PathProgramCache]: Analyzing trace with hash 1525083421, now seen corresponding path program 38 times [2021-10-07 15:52:27,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:52:27,015 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1843180870] [2021-10-07 15:52:27,016 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:52:27,016 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:52:27,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:52:27,017 INFO L229 MonitoredProcess]: Starting monitored process 112 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:52:27,018 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (112)] Waiting until timeout for monitored process [2021-10-07 15:52:27,950 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:52:27,950 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:52:27,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-07 15:52:27,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:52:28,073 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:52:28,073 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:52:28,160 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:52:28,160 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:52:28,161 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1843180870] [2021-10-07 15:52:28,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1843180870] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:52:28,161 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:52:28,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 7 [2021-10-07 15:52:28,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498160038] [2021-10-07 15:52:28,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-07 15:52:28,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:52:28,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-07 15:52:28,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-07 15:52:28,162 INFO L87 Difference]: Start difference. First operand 632 states and 2541 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:52:28,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:52:28,378 INFO L93 Difference]: Finished difference Result 808 states and 3078 transitions. [2021-10-07 15:52:28,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-07 15:52:28,379 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:52:28,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:52:28,381 INFO L225 Difference]: With dead ends: 808 [2021-10-07 15:52:28,381 INFO L226 Difference]: Without dead ends: 794 [2021-10-07 15:52:28,382 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 142.7ms TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-10-07 15:52:28,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 794 states. [2021-10-07 15:52:28,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 794 to 642. [2021-10-07 15:52:28,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 641 states have (on average 4.0109204368174725) internal successors, (2571), 641 states have internal predecessors, (2571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:52:28,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 2571 transitions. [2021-10-07 15:52:28,401 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 2571 transitions. Word has length 20 [2021-10-07 15:52:28,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:52:28,401 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 2571 transitions. [2021-10-07 15:52:28,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:52:28,402 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 2571 transitions. [2021-10-07 15:52:28,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:52:28,404 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:52:28,404 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] [2021-10-07 15:52:28,423 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (112)] Forceful destruction successful, exit code 0 [2021-10-07 15:52:28,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:52:28,618 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:52:28,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:52:28,618 INFO L82 PathProgramCache]: Analyzing trace with hash -1432080189, now seen corresponding path program 50 times [2021-10-07 15:52:28,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:52:28,619 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1836614633] [2021-10-07 15:52:28,619 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:52:28,619 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:52:28,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:52:28,621 INFO L229 MonitoredProcess]: Starting monitored process 113 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:52:28,622 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (113)] Waiting until timeout for monitored process [2021-10-07 15:52:29,679 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:52:29,679 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:52:29,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:52:29,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:52:29,876 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:52:29,877 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:52:30,615 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:52:30,615 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:52:30,615 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1836614633] [2021-10-07 15:52:30,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1836614633] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-07 15:52:30,616 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:52:30,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 12 [2021-10-07 15:52:30,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423243686] [2021-10-07 15:52:30,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-07 15:52:30,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:52:30,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-07 15:52:30,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:52:30,617 INFO L87 Difference]: Start difference. First operand 642 states and 2571 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:52:30,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:52:30,985 INFO L93 Difference]: Finished difference Result 796 states and 3047 transitions. [2021-10-07 15:52:30,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-07 15:52:30,986 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:52:30,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:52:30,988 INFO L225 Difference]: With dead ends: 796 [2021-10-07 15:52:30,988 INFO L226 Difference]: Without dead ends: 794 [2021-10-07 15:52:30,988 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 699.0ms TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2021-10-07 15:52:30,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 794 states. [2021-10-07 15:52:30,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 794 to 642. [2021-10-07 15:52:30,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 641 states have (on average 4.00780031201248) internal successors, (2569), 641 states have internal predecessors, (2569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:52:31,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 2569 transitions. [2021-10-07 15:52:31,000 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 2569 transitions. Word has length 20 [2021-10-07 15:52:31,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:52:31,000 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 2569 transitions. [2021-10-07 15:52:31,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:52:31,001 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 2569 transitions. [2021-10-07 15:52:31,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:52:31,002 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:52:31,002 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] [2021-10-07 15:52:31,014 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (113)] Forceful destruction successful, exit code 0 [2021-10-07 15:52:31,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 113 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:52:31,203 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:52:31,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:52:31,204 INFO L82 PathProgramCache]: Analyzing trace with hash -124636869, now seen corresponding path program 51 times [2021-10-07 15:52:31,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:52:31,204 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [462225241] [2021-10-07 15:52:31,204 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:52:31,205 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:52:31,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:52:31,206 INFO L229 MonitoredProcess]: Starting monitored process 114 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:52:31,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (114)] Waiting until timeout for monitored process [2021-10-07 15:52:32,206 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 15:52:32,207 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:52:32,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:52:32,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:52:32,458 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:52:32,458 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:52:33,315 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:52:33,315 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:52:33,315 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [462225241] [2021-10-07 15:52:33,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [462225241] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:52:33,316 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:52:33,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-10-07 15:52:33,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457792520] [2021-10-07 15:52:33,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 15:52:33,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:52:33,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 15:52:33,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:52:33,317 INFO L87 Difference]: Start difference. First operand 642 states and 2569 transitions. Second operand has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:52:41,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:52:41,271 INFO L93 Difference]: Finished difference Result 962 states and 3470 transitions. [2021-10-07 15:52:41,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-07 15:52:41,273 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:52:41,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:52:41,275 INFO L225 Difference]: With dead ends: 962 [2021-10-07 15:52:41,275 INFO L226 Difference]: Without dead ends: 962 [2021-10-07 15:52:41,275 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 5242.6ms TimeCoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2021-10-07 15:52:41,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 962 states. [2021-10-07 15:52:41,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 962 to 642. [2021-10-07 15:52:41,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 641 states have (on average 4.00780031201248) internal successors, (2569), 641 states have internal predecessors, (2569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:52:41,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 2569 transitions. [2021-10-07 15:52:41,289 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 2569 transitions. Word has length 20 [2021-10-07 15:52:41,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:52:41,289 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 2569 transitions. [2021-10-07 15:52:41,289 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:52:41,290 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 2569 transitions. [2021-10-07 15:52:41,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:52:41,291 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:52:41,291 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] [2021-10-07 15:52:41,304 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (114)] Ended with exit code 0 [2021-10-07 15:52:41,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 114 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:52:41,497 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:52:41,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:52:41,497 INFO L82 PathProgramCache]: Analyzing trace with hash -319608169, now seen corresponding path program 52 times [2021-10-07 15:52:41,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:52:41,498 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1549797173] [2021-10-07 15:52:41,498 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:52:41,498 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:52:41,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:52:41,500 INFO L229 MonitoredProcess]: Starting monitored process 115 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:52:41,501 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (115)] Waiting until timeout for monitored process [2021-10-07 15:52:42,366 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:52:42,366 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:52:42,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:52:42,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:52:42,555 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:52:42,555 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:52:42,990 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:52:42,991 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:52:42,991 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1549797173] [2021-10-07 15:52:42,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1549797173] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-07 15:52:42,991 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:52:42,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 12 [2021-10-07 15:52:42,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050557347] [2021-10-07 15:52:42,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-07 15:52:42,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:52:42,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-07 15:52:42,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:52:42,993 INFO L87 Difference]: Start difference. First operand 642 states and 2569 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:52:43,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:52:43,249 INFO L93 Difference]: Finished difference Result 776 states and 3004 transitions. [2021-10-07 15:52:43,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-07 15:52:43,250 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:52:43,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:52:43,252 INFO L225 Difference]: With dead ends: 776 [2021-10-07 15:52:43,252 INFO L226 Difference]: Without dead ends: 772 [2021-10-07 15:52:43,252 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 450.0ms TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2021-10-07 15:52:43,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2021-10-07 15:52:43,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 642. [2021-10-07 15:52:43,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 641 states have (on average 4.004680187207488) internal successors, (2567), 641 states have internal predecessors, (2567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:52:43,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 2567 transitions. [2021-10-07 15:52:43,264 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 2567 transitions. Word has length 20 [2021-10-07 15:52:43,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:52:43,264 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 2567 transitions. [2021-10-07 15:52:43,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:52:43,265 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 2567 transitions. [2021-10-07 15:52:43,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:52:43,266 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:52:43,266 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] [2021-10-07 15:52:43,278 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (115)] Forceful destruction successful, exit code 0 [2021-10-07 15:52:43,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 115 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:52:43,467 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:52:43,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:52:43,468 INFO L82 PathProgramCache]: Analyzing trace with hash 1936955337, now seen corresponding path program 39 times [2021-10-07 15:52:43,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:52:43,468 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1404801095] [2021-10-07 15:52:43,468 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:52:43,469 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:52:43,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:52:43,470 INFO L229 MonitoredProcess]: Starting monitored process 116 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:52:43,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (116)] Waiting until timeout for monitored process [2021-10-07 15:52:44,470 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 15:52:44,470 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:52:44,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:52:44,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:52:44,739 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:52:44,740 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:52:45,194 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:52:45,195 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:52:45,195 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1404801095] [2021-10-07 15:52:45,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1404801095] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:52:45,195 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:52:45,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-10-07 15:52:45,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828847971] [2021-10-07 15:52:45,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:52:45,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:52:45,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:52:45,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:52:45,196 INFO L87 Difference]: Start difference. First operand 642 states and 2567 transitions. Second operand has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:52:46,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:52:46,267 INFO L93 Difference]: Finished difference Result 952 states and 3447 transitions. [2021-10-07 15:52:46,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-07 15:52:46,268 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:52:46,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:52:46,271 INFO L225 Difference]: With dead ends: 952 [2021-10-07 15:52:46,271 INFO L226 Difference]: Without dead ends: 952 [2021-10-07 15:52:46,272 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 578.7ms TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2021-10-07 15:52:46,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 952 states. [2021-10-07 15:52:46,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 952 to 628. [2021-10-07 15:52:46,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 627 states have (on average 4.022328548644338) internal successors, (2522), 627 states have internal predecessors, (2522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:52:46,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 2522 transitions. [2021-10-07 15:52:46,286 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 2522 transitions. Word has length 20 [2021-10-07 15:52:46,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:52:46,286 INFO L470 AbstractCegarLoop]: Abstraction has 628 states and 2522 transitions. [2021-10-07 15:52:46,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:52:46,287 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 2522 transitions. [2021-10-07 15:52:46,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:52:46,288 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:52:46,288 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] [2021-10-07 15:52:46,301 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (116)] Forceful destruction successful, exit code 0 [2021-10-07 15:52:46,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 116 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:52:46,491 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:52:46,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:52:46,492 INFO L82 PathProgramCache]: Analyzing trace with hash 316225693, now seen corresponding path program 17 times [2021-10-07 15:52:46,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:52:46,493 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [231798230] [2021-10-07 15:52:46,493 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:52:46,493 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:52:46,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:52:46,495 INFO L229 MonitoredProcess]: Starting monitored process 117 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:52:46,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (117)] Waiting until timeout for monitored process [2021-10-07 15:52:47,444 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:52:47,444 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:52:47,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:52:47,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:52:47,681 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:52:47,681 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:52:48,616 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:52:48,617 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:52:48,617 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [231798230] [2021-10-07 15:52:48,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [231798230] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-07 15:52:48,617 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:52:48,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-10-07 15:52:48,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070459597] [2021-10-07 15:52:48,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-07 15:52:48,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:52:48,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-07 15:52:48,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:52:48,619 INFO L87 Difference]: Start difference. First operand 628 states and 2522 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:52:49,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:52:49,026 INFO L93 Difference]: Finished difference Result 964 states and 3588 transitions. [2021-10-07 15:52:49,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-07 15:52:49,026 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:52:49,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:52:49,029 INFO L225 Difference]: With dead ends: 964 [2021-10-07 15:52:49,029 INFO L226 Difference]: Without dead ends: 964 [2021-10-07 15:52:49,029 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 883.1ms TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:52:49,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 964 states. [2021-10-07 15:52:49,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 964 to 634. [2021-10-07 15:52:49,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 634 states, 633 states have (on average 4.037914691943128) internal successors, (2556), 633 states have internal predecessors, (2556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:52:49,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 2556 transitions. [2021-10-07 15:52:49,043 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 2556 transitions. Word has length 20 [2021-10-07 15:52:49,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:52:49,043 INFO L470 AbstractCegarLoop]: Abstraction has 634 states and 2556 transitions. [2021-10-07 15:52:49,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:52:49,044 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 2556 transitions. [2021-10-07 15:52:49,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:52:49,046 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:52:49,046 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:52:49,063 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (117)] Forceful destruction successful, exit code 0 [2021-10-07 15:52:49,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 117 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:52:49,262 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:52:49,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:52:49,263 INFO L82 PathProgramCache]: Analyzing trace with hash -2144091191, now seen corresponding path program 40 times [2021-10-07 15:52:49,263 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:52:49,263 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [590820084] [2021-10-07 15:52:49,263 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:52:49,264 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:52:49,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:52:49,265 INFO L229 MonitoredProcess]: Starting monitored process 118 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:52:49,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (118)] Waiting until timeout for monitored process [2021-10-07 15:52:50,152 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:52:50,152 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:52:50,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:52:50,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:52:50,451 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:52:50,451 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:52:50,949 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:52:50,949 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:52:50,950 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [590820084] [2021-10-07 15:52:50,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [590820084] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:52:50,950 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:52:50,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-10-07 15:52:50,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373747104] [2021-10-07 15:52:50,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:52:50,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:52:50,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:52:50,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:52:50,952 INFO L87 Difference]: Start difference. First operand 634 states and 2556 transitions. Second operand has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:52:56,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:52:56,787 INFO L93 Difference]: Finished difference Result 1292 states and 4421 transitions. [2021-10-07 15:52:56,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-07 15:52:56,787 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:52:56,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:52:56,790 INFO L225 Difference]: With dead ends: 1292 [2021-10-07 15:52:56,790 INFO L226 Difference]: Without dead ends: 1292 [2021-10-07 15:52:56,790 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 2934.9ms TimeCoverageRelationStatistics Valid=141, Invalid=279, Unknown=0, NotChecked=0, Total=420 [2021-10-07 15:52:56,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1292 states. [2021-10-07 15:52:56,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1292 to 640. [2021-10-07 15:52:56,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 640 states, 639 states have (on average 4.061032863849765) internal successors, (2595), 639 states have internal predecessors, (2595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:52:56,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 2595 transitions. [2021-10-07 15:52:56,815 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 2595 transitions. Word has length 20 [2021-10-07 15:52:56,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:52:56,815 INFO L470 AbstractCegarLoop]: Abstraction has 640 states and 2595 transitions. [2021-10-07 15:52:56,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:52:56,816 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 2595 transitions. [2021-10-07 15:52:56,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:52:56,817 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:52:56,817 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] [2021-10-07 15:52:56,829 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (118)] Forceful destruction successful, exit code 0 [2021-10-07 15:52:57,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 118 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:52:57,018 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:52:57,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:52:57,019 INFO L82 PathProgramCache]: Analyzing trace with hash -1857060407, now seen corresponding path program 41 times [2021-10-07 15:52:57,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:52:57,019 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1958626701] [2021-10-07 15:52:57,019 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:52:57,020 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:52:57,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:52:57,021 INFO L229 MonitoredProcess]: Starting monitored process 119 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:52:57,022 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (119)] Waiting until timeout for monitored process [2021-10-07 15:52:57,962 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:52:57,962 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:52:57,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:52:57,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:52:58,268 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:52:58,268 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:52:58,792 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:52:58,793 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:52:58,793 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1958626701] [2021-10-07 15:52:58,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1958626701] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:52:58,793 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:52:58,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-10-07 15:52:58,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615113547] [2021-10-07 15:52:58,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:52:58,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:52:58,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:52:58,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:52:58,795 INFO L87 Difference]: Start difference. First operand 640 states and 2595 transitions. Second operand has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:53:04,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:53:04,988 INFO L93 Difference]: Finished difference Result 1206 states and 4202 transitions. [2021-10-07 15:53:04,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-07 15:53:04,989 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:53:04,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:53:04,992 INFO L225 Difference]: With dead ends: 1206 [2021-10-07 15:53:04,992 INFO L226 Difference]: Without dead ends: 1206 [2021-10-07 15:53:04,992 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 1223.1ms TimeCoverageRelationStatistics Valid=183, Invalid=323, Unknown=0, NotChecked=0, Total=506 [2021-10-07 15:53:04,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1206 states. [2021-10-07 15:53:05,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1206 to 632. [2021-10-07 15:53:05,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 632 states, 631 states have (on average 4.030110935023772) internal successors, (2543), 631 states have internal predecessors, (2543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:53:05,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 632 states to 632 states and 2543 transitions. [2021-10-07 15:53:05,019 INFO L78 Accepts]: Start accepts. Automaton has 632 states and 2543 transitions. Word has length 20 [2021-10-07 15:53:05,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:53:05,020 INFO L470 AbstractCegarLoop]: Abstraction has 632 states and 2543 transitions. [2021-10-07 15:53:05,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:53:05,020 INFO L276 IsEmpty]: Start isEmpty. Operand 632 states and 2543 transitions. [2021-10-07 15:53:05,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:53:05,021 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:53:05,021 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] [2021-10-07 15:53:05,035 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (119)] Forceful destruction successful, exit code 0 [2021-10-07 15:53:05,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 119 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:53:05,222 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:53:05,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:53:05,223 INFO L82 PathProgramCache]: Analyzing trace with hash -789226003, now seen corresponding path program 18 times [2021-10-07 15:53:05,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:53:05,224 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2070813613] [2021-10-07 15:53:05,224 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:53:05,224 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:53:05,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:53:05,225 INFO L229 MonitoredProcess]: Starting monitored process 120 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:53:05,226 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (120)] Waiting until timeout for monitored process [2021-10-07 15:53:06,250 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-07 15:53:06,250 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:53:06,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:53:06,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:53:06,492 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:53:06,492 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:53:07,235 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:53:07,235 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:53:07,235 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2070813613] [2021-10-07 15:53:07,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2070813613] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-07 15:53:07,236 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:53:07,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-10-07 15:53:07,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345258248] [2021-10-07 15:53:07,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-07 15:53:07,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:53:07,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-07 15:53:07,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:53:07,237 INFO L87 Difference]: Start difference. First operand 632 states and 2543 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:53:07,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:53:07,558 INFO L93 Difference]: Finished difference Result 876 states and 3290 transitions. [2021-10-07 15:53:07,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-07 15:53:07,558 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:53:07,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:53:07,560 INFO L225 Difference]: With dead ends: 876 [2021-10-07 15:53:07,560 INFO L226 Difference]: Without dead ends: 876 [2021-10-07 15:53:07,561 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 619.0ms TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:53:07,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2021-10-07 15:53:07,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 632. [2021-10-07 15:53:07,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 632 states, 631 states have (on average 4.030110935023772) internal successors, (2543), 631 states have internal predecessors, (2543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:53:07,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 632 states to 632 states and 2543 transitions. [2021-10-07 15:53:07,579 INFO L78 Accepts]: Start accepts. Automaton has 632 states and 2543 transitions. Word has length 20 [2021-10-07 15:53:07,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:53:07,580 INFO L470 AbstractCegarLoop]: Abstraction has 632 states and 2543 transitions. [2021-10-07 15:53:07,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:53:07,580 INFO L276 IsEmpty]: Start isEmpty. Operand 632 states and 2543 transitions. [2021-10-07 15:53:07,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:53:07,581 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:53:07,582 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] [2021-10-07 15:53:07,599 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (120)] Ended with exit code 0 [2021-10-07 15:53:07,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 120 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:53:07,796 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:53:07,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:53:07,796 INFO L82 PathProgramCache]: Analyzing trace with hash -1327010709, now seen corresponding path program 53 times [2021-10-07 15:53:07,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:53:07,797 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1360857048] [2021-10-07 15:53:07,797 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:53:07,798 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:53:07,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:53:07,799 INFO L229 MonitoredProcess]: Starting monitored process 121 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:53:07,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (121)] Waiting until timeout for monitored process [2021-10-07 15:53:08,771 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:53:08,771 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:53:08,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:53:08,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:53:08,971 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:53:08,971 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:53:13,653 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:53:13,653 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:53:13,653 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1360857048] [2021-10-07 15:53:13,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1360857048] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-07 15:53:13,654 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:53:13,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2021-10-07 15:53:13,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408875529] [2021-10-07 15:53:13,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-07 15:53:13,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:53:13,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-07 15:53:13,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=112, Unknown=2, NotChecked=0, Total=156 [2021-10-07 15:53:13,655 INFO L87 Difference]: Start difference. First operand 632 states and 2543 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:53:14,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:53:14,225 INFO L93 Difference]: Finished difference Result 962 states and 3544 transitions. [2021-10-07 15:53:14,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-07 15:53:14,226 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:53:14,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:53:14,229 INFO L225 Difference]: With dead ends: 962 [2021-10-07 15:53:14,229 INFO L226 Difference]: Without dead ends: 960 [2021-10-07 15:53:14,229 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 4662.3ms TimeCoverageRelationStatistics Valid=100, Invalid=204, Unknown=2, NotChecked=0, Total=306 [2021-10-07 15:53:14,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 960 states. [2021-10-07 15:53:14,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 960 to 634. [2021-10-07 15:53:14,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 634 states, 633 states have (on average 4.025276461295419) internal successors, (2548), 633 states have internal predecessors, (2548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:53:14,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 2548 transitions. [2021-10-07 15:53:14,243 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 2548 transitions. Word has length 20 [2021-10-07 15:53:14,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:53:14,243 INFO L470 AbstractCegarLoop]: Abstraction has 634 states and 2548 transitions. [2021-10-07 15:53:14,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:53:14,243 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 2548 transitions. [2021-10-07 15:53:14,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:53:14,245 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:53:14,245 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] [2021-10-07 15:53:14,258 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (121)] Ended with exit code 0 [2021-10-07 15:53:14,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 121 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:53:14,446 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:53:14,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:53:14,446 INFO L82 PathProgramCache]: Analyzing trace with hash 667865859, now seen corresponding path program 54 times [2021-10-07 15:53:14,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:53:14,447 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1726007207] [2021-10-07 15:53:14,447 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:53:14,448 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:53:14,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:53:14,449 INFO L229 MonitoredProcess]: Starting monitored process 122 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:53:14,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (122)] Waiting until timeout for monitored process [2021-10-07 15:53:15,576 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-07 15:53:15,577 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:53:15,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:53:15,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:53:15,911 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:53:15,912 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:53:20,579 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:53:20,580 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:53:20,580 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1726007207] [2021-10-07 15:53:20,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1726007207] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:53:20,580 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:53:20,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-10-07 15:53:20,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888184990] [2021-10-07 15:53:20,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:53:20,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:53:20,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:53:20,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=124, Unknown=2, NotChecked=0, Total=182 [2021-10-07 15:53:20,582 INFO L87 Difference]: Start difference. First operand 634 states and 2548 transitions. Second operand has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:53:42,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:53:42,926 INFO L93 Difference]: Finished difference Result 1722 states and 5716 transitions. [2021-10-07 15:53:42,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-07 15:53:42,928 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:53:42,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:53:42,932 INFO L225 Difference]: With dead ends: 1722 [2021-10-07 15:53:42,932 INFO L226 Difference]: Without dead ends: 1722 [2021-10-07 15:53:42,932 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 19416.3ms TimeCoverageRelationStatistics Valid=342, Invalid=846, Unknown=2, NotChecked=0, Total=1190 [2021-10-07 15:53:42,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1722 states. [2021-10-07 15:53:42,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1722 to 652. [2021-10-07 15:53:42,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 652 states, 651 states have (on average 4.070660522273426) internal successors, (2650), 651 states have internal predecessors, (2650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:53:42,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 2650 transitions. [2021-10-07 15:53:42,955 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 2650 transitions. Word has length 20 [2021-10-07 15:53:42,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:53:42,955 INFO L470 AbstractCegarLoop]: Abstraction has 652 states and 2650 transitions. [2021-10-07 15:53:42,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:53:42,955 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 2650 transitions. [2021-10-07 15:53:42,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:53:42,957 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:53:42,957 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] [2021-10-07 15:53:42,972 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (122)] Forceful destruction successful, exit code 0 [2021-10-07 15:53:43,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 122 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:53:43,158 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:53:43,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:53:43,158 INFO L82 PathProgramCache]: Analyzing trace with hash 655239429, now seen corresponding path program 42 times [2021-10-07 15:53:43,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:53:43,159 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [932988322] [2021-10-07 15:53:43,159 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:53:43,160 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:53:43,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:53:43,161 INFO L229 MonitoredProcess]: Starting monitored process 123 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:53:43,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (123)] Waiting until timeout for monitored process [2021-10-07 15:53:44,318 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-07 15:53:44,318 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:53:44,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:53:44,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:53:44,501 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:53:44,501 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:53:45,127 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:53:45,127 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:53:45,128 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [932988322] [2021-10-07 15:53:45,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [932988322] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-07 15:53:45,128 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:53:45,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 11 [2021-10-07 15:53:45,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571269443] [2021-10-07 15:53:45,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-07 15:53:45,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:53:45,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-07 15:53:45,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-10-07 15:53:45,129 INFO L87 Difference]: Start difference. First operand 652 states and 2650 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:53:45,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:53:45,616 INFO L93 Difference]: Finished difference Result 906 states and 3403 transitions. [2021-10-07 15:53:45,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-07 15:53:45,617 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:53:45,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:53:45,620 INFO L225 Difference]: With dead ends: 906 [2021-10-07 15:53:45,620 INFO L226 Difference]: Without dead ends: 906 [2021-10-07 15:53:45,620 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 504.8ms TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:53:45,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2021-10-07 15:53:45,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 654. [2021-10-07 15:53:45,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 654 states, 653 states have (on average 4.071975497702909) internal successors, (2659), 653 states have internal predecessors, (2659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:53:45,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 2659 transitions. [2021-10-07 15:53:45,635 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 2659 transitions. Word has length 20 [2021-10-07 15:53:45,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:53:45,635 INFO L470 AbstractCegarLoop]: Abstraction has 654 states and 2659 transitions. [2021-10-07 15:53:45,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:53:45,636 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 2659 transitions. [2021-10-07 15:53:45,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:53:45,637 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:53:45,637 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] [2021-10-07 15:53:45,651 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (123)] Ended with exit code 0 [2021-10-07 15:53:45,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 123 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:53:45,838 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:53:45,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:53:45,839 INFO L82 PathProgramCache]: Analyzing trace with hash 1624901349, now seen corresponding path program 43 times [2021-10-07 15:53:45,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:53:45,840 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2091852764] [2021-10-07 15:53:45,840 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:53:45,841 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:53:45,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:53:45,842 INFO L229 MonitoredProcess]: Starting monitored process 124 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:53:45,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (124)] Waiting until timeout for monitored process [2021-10-07 15:53:46,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:53:46,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-07 15:53:46,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:53:47,005 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:53:47,005 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:53:47,172 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:53:47,173 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:53:47,173 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2091852764] [2021-10-07 15:53:47,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2091852764] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:53:47,173 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:53:47,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 7 [2021-10-07 15:53:47,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892873075] [2021-10-07 15:53:47,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-07 15:53:47,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:53:47,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-07 15:53:47,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-07 15:53:47,175 INFO L87 Difference]: Start difference. First operand 654 states and 2659 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:53:47,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:53:47,554 INFO L93 Difference]: Finished difference Result 894 states and 3348 transitions. [2021-10-07 15:53:47,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-07 15:53:47,555 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:53:47,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:53:47,558 INFO L225 Difference]: With dead ends: 894 [2021-10-07 15:53:47,559 INFO L226 Difference]: Without dead ends: 880 [2021-10-07 15:53:47,559 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 173.3ms TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-10-07 15:53:47,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 880 states. [2021-10-07 15:53:47,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 880 to 650. [2021-10-07 15:53:47,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 650 states, 649 states have (on average 4.075500770416024) internal successors, (2645), 649 states have internal predecessors, (2645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:53:47,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 2645 transitions. [2021-10-07 15:53:47,573 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 2645 transitions. Word has length 20 [2021-10-07 15:53:47,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:53:47,573 INFO L470 AbstractCegarLoop]: Abstraction has 650 states and 2645 transitions. [2021-10-07 15:53:47,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:53:47,573 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 2645 transitions. [2021-10-07 15:53:47,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:53:47,575 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:53:47,575 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] [2021-10-07 15:53:47,588 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (124)] Forceful destruction successful, exit code 0 [2021-10-07 15:53:47,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 124 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:53:47,776 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:53:47,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:53:47,777 INFO L82 PathProgramCache]: Analyzing trace with hash -1332262261, now seen corresponding path program 55 times [2021-10-07 15:53:47,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:53:47,777 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1995047127] [2021-10-07 15:53:47,777 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:53:47,778 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:53:47,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:53:47,779 INFO L229 MonitoredProcess]: Starting monitored process 125 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:53:47,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (125)] Waiting until timeout for monitored process [2021-10-07 15:53:48,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:53:48,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:53:48,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:53:48,940 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:53:48,940 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:53:53,811 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:53:53,811 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:53:53,812 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1995047127] [2021-10-07 15:53:53,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1995047127] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-07 15:53:53,812 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:53:53,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2021-10-07 15:53:53,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181428519] [2021-10-07 15:53:53,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-07 15:53:53,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:53:53,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-07 15:53:53,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=118, Unknown=2, NotChecked=0, Total=156 [2021-10-07 15:53:53,813 INFO L87 Difference]: Start difference. First operand 650 states and 2645 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:53:54,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:53:54,354 INFO L93 Difference]: Finished difference Result 928 states and 3522 transitions. [2021-10-07 15:53:54,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-07 15:53:54,355 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:53:54,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:53:54,358 INFO L225 Difference]: With dead ends: 928 [2021-10-07 15:53:54,358 INFO L226 Difference]: Without dead ends: 926 [2021-10-07 15:53:54,358 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 4776.1ms TimeCoverageRelationStatistics Valid=80, Invalid=190, Unknown=2, NotChecked=0, Total=272 [2021-10-07 15:53:54,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2021-10-07 15:53:54,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 650. [2021-10-07 15:53:54,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 650 states, 649 states have (on average 4.072419106317412) internal successors, (2643), 649 states have internal predecessors, (2643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:53:54,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 2643 transitions. [2021-10-07 15:53:54,371 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 2643 transitions. Word has length 20 [2021-10-07 15:53:54,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:53:54,371 INFO L470 AbstractCegarLoop]: Abstraction has 650 states and 2643 transitions. [2021-10-07 15:53:54,371 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:53:54,371 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 2643 transitions. [2021-10-07 15:53:54,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:53:54,372 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:53:54,373 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] [2021-10-07 15:53:54,386 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (125)] Ended with exit code 0 [2021-10-07 15:53:54,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 125 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:53:54,574 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:53:54,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:53:54,575 INFO L82 PathProgramCache]: Analyzing trace with hash -24818941, now seen corresponding path program 56 times [2021-10-07 15:53:54,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:53:54,576 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1276462745] [2021-10-07 15:53:54,576 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:53:54,576 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:53:54,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:53:54,578 INFO L229 MonitoredProcess]: Starting monitored process 126 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:53:54,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (126)] Waiting until timeout for monitored process [2021-10-07 15:53:55,636 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:53:55,636 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:53:55,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:53:55,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:53:55,922 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:53:55,922 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:54:01,169 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:54:01,170 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:54:01,170 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1276462745] [2021-10-07 15:54:01,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1276462745] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:54:01,170 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:54:01,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-10-07 15:54:01,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642433773] [2021-10-07 15:54:01,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:54:01,171 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:54:01,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:54:01,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=136, Unknown=2, NotChecked=0, Total=182 [2021-10-07 15:54:01,171 INFO L87 Difference]: Start difference. First operand 650 states and 2643 transitions. Second operand has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:54:33,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:54:33,406 INFO L93 Difference]: Finished difference Result 1440 states and 4957 transitions. [2021-10-07 15:54:33,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-07 15:54:33,408 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:54:33,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:54:33,411 INFO L225 Difference]: With dead ends: 1440 [2021-10-07 15:54:33,411 INFO L226 Difference]: Without dead ends: 1440 [2021-10-07 15:54:33,412 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 25017.1ms TimeCoverageRelationStatistics Valid=310, Invalid=878, Unknown=2, NotChecked=0, Total=1190 [2021-10-07 15:54:33,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1440 states. [2021-10-07 15:54:33,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1440 to 650. [2021-10-07 15:54:33,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 650 states, 649 states have (on average 4.0785824345146375) internal successors, (2647), 649 states have internal predecessors, (2647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:54:33,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 2647 transitions. [2021-10-07 15:54:33,430 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 2647 transitions. Word has length 20 [2021-10-07 15:54:33,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:54:33,430 INFO L470 AbstractCegarLoop]: Abstraction has 650 states and 2647 transitions. [2021-10-07 15:54:33,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:54:33,430 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 2647 transitions. [2021-10-07 15:54:33,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:54:33,431 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:54:33,431 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] [2021-10-07 15:54:33,446 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (126)] Forceful destruction successful, exit code 0 [2021-10-07 15:54:33,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 126 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:54:33,633 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:54:33,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:54:33,634 INFO L82 PathProgramCache]: Analyzing trace with hash 1686812523, now seen corresponding path program 57 times [2021-10-07 15:54:33,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:54:33,635 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1587988222] [2021-10-07 15:54:33,635 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:54:33,635 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:54:33,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:54:33,637 INFO L229 MonitoredProcess]: Starting monitored process 127 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:54:33,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (127)] Waiting until timeout for monitored process [2021-10-07 15:54:34,707 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 15:54:34,707 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:54:34,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:54:34,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:54:34,968 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:54:34,968 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:54:37,510 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:54:37,511 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:54:37,511 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1587988222] [2021-10-07 15:54:37,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1587988222] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:54:37,511 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:54:37,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-10-07 15:54:37,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050766057] [2021-10-07 15:54:37,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:54:37,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:54:37,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:54:37,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:54:37,513 INFO L87 Difference]: Start difference. First operand 650 states and 2647 transitions. Second operand has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:54:47,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:54:47,093 INFO L93 Difference]: Finished difference Result 1466 states and 5120 transitions. [2021-10-07 15:54:47,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-07 15:54:47,095 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:54:47,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:54:47,099 INFO L225 Difference]: With dead ends: 1466 [2021-10-07 15:54:47,099 INFO L226 Difference]: Without dead ends: 1466 [2021-10-07 15:54:47,099 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 9074.1ms TimeCoverageRelationStatistics Valid=251, Invalid=505, Unknown=0, NotChecked=0, Total=756 [2021-10-07 15:54:47,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1466 states. [2021-10-07 15:54:47,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1466 to 654. [2021-10-07 15:54:47,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 654 states, 653 states have (on average 4.093415007656968) internal successors, (2673), 653 states have internal predecessors, (2673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:54:47,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 2673 transitions. [2021-10-07 15:54:47,117 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 2673 transitions. Word has length 20 [2021-10-07 15:54:47,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:54:47,118 INFO L470 AbstractCegarLoop]: Abstraction has 654 states and 2673 transitions. [2021-10-07 15:54:47,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:54:47,118 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 2673 transitions. [2021-10-07 15:54:47,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:54:47,119 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:54:47,119 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:54:47,132 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (127)] Ended with exit code 0 [2021-10-07 15:54:47,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 127 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:54:47,320 INFO L402 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:54:47,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:54:47,321 INFO L82 PathProgramCache]: Analyzing trace with hash -1731645719, now seen corresponding path program 44 times [2021-10-07 15:54:47,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:54:47,322 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1734808713] [2021-10-07 15:54:47,322 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:54:47,322 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:54:47,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:54:47,324 INFO L229 MonitoredProcess]: Starting monitored process 128 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:54:47,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (128)] Waiting until timeout for monitored process [2021-10-07 15:54:48,523 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:54:48,523 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:54:48,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:54:48,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:54:48,718 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:54:48,719 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:54:49,158 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:54:49,158 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:54:49,158 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1734808713] [2021-10-07 15:54:49,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1734808713] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-07 15:54:49,159 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:54:49,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 11 [2021-10-07 15:54:49,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708317862] [2021-10-07 15:54:49,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-07 15:54:49,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:54:49,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-07 15:54:49,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-10-07 15:54:49,160 INFO L87 Difference]: Start difference. First operand 654 states and 2673 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:54:49,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:54:49,580 INFO L93 Difference]: Finished difference Result 876 states and 3345 transitions. [2021-10-07 15:54:49,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-07 15:54:49,581 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:54:49,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:54:49,583 INFO L225 Difference]: With dead ends: 876 [2021-10-07 15:54:49,583 INFO L226 Difference]: Without dead ends: 876 [2021-10-07 15:54:49,583 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 411.6ms TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:54:49,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2021-10-07 15:54:49,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 660. [2021-10-07 15:54:49,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 660 states, 659 states have (on average 4.0804248861911985) internal successors, (2689), 659 states have internal predecessors, (2689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:54:49,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 660 states to 660 states and 2689 transitions. [2021-10-07 15:54:49,598 INFO L78 Accepts]: Start accepts. Automaton has 660 states and 2689 transitions. Word has length 20 [2021-10-07 15:54:49,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:54:49,598 INFO L470 AbstractCegarLoop]: Abstraction has 660 states and 2689 transitions. [2021-10-07 15:54:49,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:54:49,598 INFO L276 IsEmpty]: Start isEmpty. Operand 660 states and 2689 transitions. [2021-10-07 15:54:49,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:54:49,600 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:54:49,600 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] [2021-10-07 15:54:49,613 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (128)] Ended with exit code 0 [2021-10-07 15:54:49,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 128 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:54:49,802 INFO L402 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:54:49,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:54:49,802 INFO L82 PathProgramCache]: Analyzing trace with hash 575819887, now seen corresponding path program 58 times [2021-10-07 15:54:49,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:54:49,803 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [277324265] [2021-10-07 15:54:49,804 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:54:49,804 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:54:49,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:54:49,806 INFO L229 MonitoredProcess]: Starting monitored process 129 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:54:49,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (129)] Waiting until timeout for monitored process [2021-10-07 15:54:50,796 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:54:50,797 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:54:50,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:54:50,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:54:51,003 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:54:51,003 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:54:53,620 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:54:53,620 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:54:53,621 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [277324265] [2021-10-07 15:54:53,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [277324265] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-07 15:54:53,621 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:54:53,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2021-10-07 15:54:53,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037959149] [2021-10-07 15:54:53,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-07 15:54:53,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:54:53,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-07 15:54:53,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=121, Unknown=1, NotChecked=0, Total=156 [2021-10-07 15:54:53,624 INFO L87 Difference]: Start difference. First operand 660 states and 2689 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:54:54,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:54:54,171 INFO L93 Difference]: Finished difference Result 958 states and 3605 transitions. [2021-10-07 15:54:54,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-07 15:54:54,172 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:54:54,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:54:54,175 INFO L225 Difference]: With dead ends: 958 [2021-10-07 15:54:54,175 INFO L226 Difference]: Without dead ends: 956 [2021-10-07 15:54:54,175 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 2638.5ms TimeCoverageRelationStatistics Valid=89, Invalid=216, Unknown=1, NotChecked=0, Total=306 [2021-10-07 15:54:54,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 956 states. [2021-10-07 15:54:54,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 956 to 660. [2021-10-07 15:54:54,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 660 states, 659 states have (on average 4.077389984825493) internal successors, (2687), 659 states have internal predecessors, (2687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:54:54,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 660 states to 660 states and 2687 transitions. [2021-10-07 15:54:54,191 INFO L78 Accepts]: Start accepts. Automaton has 660 states and 2687 transitions. Word has length 20 [2021-10-07 15:54:54,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:54:54,191 INFO L470 AbstractCegarLoop]: Abstraction has 660 states and 2687 transitions. [2021-10-07 15:54:54,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:54:54,192 INFO L276 IsEmpty]: Start isEmpty. Operand 660 states and 2687 transitions. [2021-10-07 15:54:54,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:54:54,194 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:54:54,194 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] [2021-10-07 15:54:54,208 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (129)] Forceful destruction successful, exit code 0 [2021-10-07 15:54:54,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 129 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:54:54,395 INFO L402 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:54:54,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:54:54,396 INFO L82 PathProgramCache]: Analyzing trace with hash 1883263207, now seen corresponding path program 59 times [2021-10-07 15:54:54,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:54:54,397 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [13649913] [2021-10-07 15:54:54,397 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:54:54,398 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:54:54,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:54:54,399 INFO L229 MonitoredProcess]: Starting monitored process 130 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:54:54,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (130)] Waiting until timeout for monitored process [2021-10-07 15:54:55,400 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:54:55,401 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:54:55,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:54:55,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:54:55,647 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:54:55,647 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:54:58,336 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:54:58,336 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:54:58,336 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [13649913] [2021-10-07 15:54:58,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [13649913] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:54:58,337 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:54:58,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-10-07 15:54:58,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045834762] [2021-10-07 15:54:58,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:54:58,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:54:58,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:54:58,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=137, Unknown=1, NotChecked=0, Total=182 [2021-10-07 15:54:58,339 INFO L87 Difference]: Start difference. First operand 660 states and 2687 transitions. Second operand has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:55:05,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:55:05,289 INFO L93 Difference]: Finished difference Result 1334 states and 4629 transitions. [2021-10-07 15:55:05,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-07 15:55:05,290 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:55:05,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:55:05,295 INFO L225 Difference]: With dead ends: 1334 [2021-10-07 15:55:05,295 INFO L226 Difference]: Without dead ends: 1334 [2021-10-07 15:55:05,296 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 8120.3ms TimeCoverageRelationStatistics Valid=214, Invalid=597, Unknown=1, NotChecked=0, Total=812 [2021-10-07 15:55:05,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1334 states. [2021-10-07 15:55:05,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1334 to 668. [2021-10-07 15:55:05,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 668 states, 667 states have (on average 4.073463268365817) internal successors, (2717), 667 states have internal predecessors, (2717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:55:05,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 2717 transitions. [2021-10-07 15:55:05,326 INFO L78 Accepts]: Start accepts. Automaton has 668 states and 2717 transitions. Word has length 20 [2021-10-07 15:55:05,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:55:05,327 INFO L470 AbstractCegarLoop]: Abstraction has 668 states and 2717 transitions. [2021-10-07 15:55:05,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:55:05,327 INFO L276 IsEmpty]: Start isEmpty. Operand 668 states and 2717 transitions. [2021-10-07 15:55:05,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:55:05,329 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:55:05,330 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] [2021-10-07 15:55:05,351 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (130)] Forceful destruction successful, exit code 0 [2021-10-07 15:55:05,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 130 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:55:05,546 INFO L402 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:55:05,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:55:05,546 INFO L82 PathProgramCache]: Analyzing trace with hash 604831339, now seen corresponding path program 60 times [2021-10-07 15:55:05,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:55:05,547 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1415076848] [2021-10-07 15:55:05,547 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:55:05,548 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:55:05,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:55:05,549 INFO L229 MonitoredProcess]: Starting monitored process 131 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:55:05,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (131)] Waiting until timeout for monitored process [2021-10-07 15:55:06,722 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-07 15:55:06,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:55:06,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:55:06,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:55:06,964 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:55:06,964 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:55:09,597 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:55:09,597 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:55:09,597 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1415076848] [2021-10-07 15:55:09,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1415076848] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:55:09,598 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:55:09,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-10-07 15:55:09,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406273832] [2021-10-07 15:55:09,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:55:09,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:55:09,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:55:09,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=136, Unknown=1, NotChecked=0, Total=182 [2021-10-07 15:55:09,599 INFO L87 Difference]: Start difference. First operand 668 states and 2717 transitions. Second operand has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:55:29,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:55:29,268 INFO L93 Difference]: Finished difference Result 1764 states and 5835 transitions. [2021-10-07 15:55:29,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-07 15:55:29,269 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:55:29,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:55:29,274 INFO L225 Difference]: With dead ends: 1764 [2021-10-07 15:55:29,274 INFO L226 Difference]: Without dead ends: 1764 [2021-10-07 15:55:29,275 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 18412.7ms TimeCoverageRelationStatistics Valid=392, Invalid=1013, Unknown=1, NotChecked=0, Total=1406 [2021-10-07 15:55:29,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1764 states. [2021-10-07 15:55:29,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1764 to 660. [2021-10-07 15:55:29,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 660 states, 659 states have (on average 4.08649468892261) internal successors, (2693), 659 states have internal predecessors, (2693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:55:29,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 660 states to 660 states and 2693 transitions. [2021-10-07 15:55:29,296 INFO L78 Accepts]: Start accepts. Automaton has 660 states and 2693 transitions. Word has length 20 [2021-10-07 15:55:29,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:55:29,297 INFO L470 AbstractCegarLoop]: Abstraction has 660 states and 2693 transitions. [2021-10-07 15:55:29,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:55:29,297 INFO L276 IsEmpty]: Start isEmpty. Operand 660 states and 2693 transitions. [2021-10-07 15:55:29,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:55:29,298 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:55:29,298 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] [2021-10-07 15:55:29,312 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (131)] Ended with exit code 0 [2021-10-07 15:55:29,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 131 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:55:29,499 INFO L402 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:55:29,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:55:29,500 INFO L82 PathProgramCache]: Analyzing trace with hash 1567220871, now seen corresponding path program 61 times [2021-10-07 15:55:29,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:55:29,500 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1090516368] [2021-10-07 15:55:29,501 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:55:29,501 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:55:29,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:55:29,502 INFO L229 MonitoredProcess]: Starting monitored process 132 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:55:29,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (132)] Waiting until timeout for monitored process [2021-10-07 15:55:30,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:55:30,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:55:30,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:55:30,869 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:55:30,869 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:55:32,034 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:55:32,035 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:55:32,035 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1090516368] [2021-10-07 15:55:32,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1090516368] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:55:32,035 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:55:32,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-10-07 15:55:32,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330654666] [2021-10-07 15:55:32,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:55:32,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:55:32,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:55:32,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:55:32,037 INFO L87 Difference]: Start difference. First operand 660 states and 2693 transitions. Second operand has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:55:40,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:55:40,449 INFO L93 Difference]: Finished difference Result 1632 states and 5703 transitions. [2021-10-07 15:55:40,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-07 15:55:40,452 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:55:40,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:55:40,456 INFO L225 Difference]: With dead ends: 1632 [2021-10-07 15:55:40,456 INFO L226 Difference]: Without dead ends: 1632 [2021-10-07 15:55:40,456 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 7504.2ms TimeCoverageRelationStatistics Valid=304, Invalid=566, Unknown=0, NotChecked=0, Total=870 [2021-10-07 15:55:40,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1632 states. [2021-10-07 15:55:40,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1632 to 686. [2021-10-07 15:55:40,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 686 states, 685 states have (on average 4.0992700729927005) internal successors, (2808), 685 states have internal predecessors, (2808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:55:40,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 2808 transitions. [2021-10-07 15:55:40,492 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 2808 transitions. Word has length 20 [2021-10-07 15:55:40,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:55:40,492 INFO L470 AbstractCegarLoop]: Abstraction has 686 states and 2808 transitions. [2021-10-07 15:55:40,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:55:40,492 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 2808 transitions. [2021-10-07 15:55:40,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:55:40,494 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:55:40,494 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] [2021-10-07 15:55:40,506 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (132)] Ended with exit code 0 [2021-10-07 15:55:40,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 132 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:55:40,695 INFO L402 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:55:40,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:55:40,696 INFO L82 PathProgramCache]: Analyzing trace with hash 710130279, now seen corresponding path program 62 times [2021-10-07 15:55:40,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:55:40,696 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1298461577] [2021-10-07 15:55:40,696 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:55:40,697 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:55:40,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:55:40,698 INFO L229 MonitoredProcess]: Starting monitored process 133 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:55:40,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (133)] Waiting until timeout for monitored process [2021-10-07 15:55:41,816 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:55:41,816 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:55:41,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:55:41,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:55:42,100 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:55:42,100 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:55:43,293 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:55:43,294 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:55:43,294 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1298461577] [2021-10-07 15:55:43,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1298461577] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:55:43,294 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:55:43,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-10-07 15:55:43,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854033805] [2021-10-07 15:55:43,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:55:43,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:55:43,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:55:43,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:55:43,296 INFO L87 Difference]: Start difference. First operand 686 states and 2808 transitions. Second operand has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:55:50,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:55:50,796 INFO L93 Difference]: Finished difference Result 1654 states and 5737 transitions. [2021-10-07 15:55:50,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-07 15:55:50,797 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:55:50,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:55:50,801 INFO L225 Difference]: With dead ends: 1654 [2021-10-07 15:55:50,801 INFO L226 Difference]: Without dead ends: 1654 [2021-10-07 15:55:50,801 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 6577.6ms TimeCoverageRelationStatistics Valid=299, Invalid=571, Unknown=0, NotChecked=0, Total=870 [2021-10-07 15:55:50,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1654 states. [2021-10-07 15:55:50,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1654 to 678. [2021-10-07 15:55:50,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 678 states, 677 states have (on average 4.081240768094535) internal successors, (2763), 677 states have internal predecessors, (2763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:55:50,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 2763 transitions. [2021-10-07 15:55:50,824 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 2763 transitions. Word has length 20 [2021-10-07 15:55:50,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:55:50,824 INFO L470 AbstractCegarLoop]: Abstraction has 678 states and 2763 transitions. [2021-10-07 15:55:50,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:55:50,824 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 2763 transitions. [2021-10-07 15:55:50,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:55:50,826 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:55:50,826 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] [2021-10-07 15:55:50,839 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (133)] Ended with exit code 0 [2021-10-07 15:55:51,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 133 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:55:51,027 INFO L402 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:55:51,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:55:51,028 INFO L82 PathProgramCache]: Analyzing trace with hash 2125799171, now seen corresponding path program 63 times [2021-10-07 15:55:51,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:55:51,028 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2054699969] [2021-10-07 15:55:51,029 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:55:51,029 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:55:51,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:55:51,031 INFO L229 MonitoredProcess]: Starting monitored process 134 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:55:51,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (134)] Waiting until timeout for monitored process [2021-10-07 15:55:52,183 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 15:55:52,184 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:55:52,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:55:52,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:55:52,443 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:55:52,443 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:55:52,958 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:55:52,958 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:55:52,958 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2054699969] [2021-10-07 15:55:52,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2054699969] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:55:52,959 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:55:52,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-10-07 15:55:52,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829568319] [2021-10-07 15:55:52,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:55:52,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:55:52,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:55:52,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:55:52,960 INFO L87 Difference]: Start difference. First operand 678 states and 2763 transitions. Second operand has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:56:01,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:56:01,976 INFO L93 Difference]: Finished difference Result 1902 states and 6423 transitions. [2021-10-07 15:56:01,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-07 15:56:01,977 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:56:01,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:56:01,981 INFO L225 Difference]: With dead ends: 1902 [2021-10-07 15:56:01,981 INFO L226 Difference]: Without dead ends: 1902 [2021-10-07 15:56:01,981 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 6878.0ms TimeCoverageRelationStatistics Valid=448, Invalid=1034, Unknown=0, NotChecked=0, Total=1482 [2021-10-07 15:56:01,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1902 states. [2021-10-07 15:56:01,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1902 to 640. [2021-10-07 15:56:01,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 640 states, 639 states have (on average 4.062597809076682) internal successors, (2596), 639 states have internal predecessors, (2596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:56:02,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 2596 transitions. [2021-10-07 15:56:02,001 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 2596 transitions. Word has length 20 [2021-10-07 15:56:02,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:56:02,001 INFO L470 AbstractCegarLoop]: Abstraction has 640 states and 2596 transitions. [2021-10-07 15:56:02,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:56:02,001 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 2596 transitions. [2021-10-07 15:56:02,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:56:02,002 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:56:02,002 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] [2021-10-07 15:56:02,015 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (134)] Forceful destruction successful, exit code 0 [2021-10-07 15:56:02,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 134 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:56:02,204 INFO L402 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:56:02,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:56:02,204 INFO L82 PathProgramCache]: Analyzing trace with hash 2035451805, now seen corresponding path program 19 times [2021-10-07 15:56:02,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:56:02,205 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1718189581] [2021-10-07 15:56:02,205 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:56:02,206 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:56:02,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:56:02,207 INFO L229 MonitoredProcess]: Starting monitored process 135 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:56:02,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (135)] Waiting until timeout for monitored process [2021-10-07 15:56:03,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:56:03,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:56:03,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:56:03,472 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:56:03,472 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:56:04,294 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:56:04,294 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:56:04,294 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1718189581] [2021-10-07 15:56:04,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1718189581] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:56:04,294 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:56:04,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-10-07 15:56:04,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220425933] [2021-10-07 15:56:04,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:56:04,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:56:04,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:56:04,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:56:04,296 INFO L87 Difference]: Start difference. First operand 640 states and 2596 transitions. Second operand has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:56:06,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:56:06,403 INFO L93 Difference]: Finished difference Result 1330 states and 4755 transitions. [2021-10-07 15:56:06,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-07 15:56:06,405 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:56:06,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:56:06,408 INFO L225 Difference]: With dead ends: 1330 [2021-10-07 15:56:06,408 INFO L226 Difference]: Without dead ends: 1326 [2021-10-07 15:56:06,408 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1694.6ms TimeCoverageRelationStatistics Valid=98, Invalid=208, Unknown=0, NotChecked=0, Total=306 [2021-10-07 15:56:06,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1326 states. [2021-10-07 15:56:06,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1326 to 662. [2021-10-07 15:56:06,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 661 states have (on average 4.075642965204236) internal successors, (2694), 661 states have internal predecessors, (2694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:56:06,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 2694 transitions. [2021-10-07 15:56:06,426 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 2694 transitions. Word has length 20 [2021-10-07 15:56:06,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:56:06,426 INFO L470 AbstractCegarLoop]: Abstraction has 662 states and 2694 transitions. [2021-10-07 15:56:06,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:56:06,426 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 2694 transitions. [2021-10-07 15:56:06,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:56:06,427 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:56:06,427 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] [2021-10-07 15:56:06,442 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (135)] Ended with exit code 0 [2021-10-07 15:56:06,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 135 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:56:06,628 INFO L402 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:56:06,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:56:06,629 INFO L82 PathProgramCache]: Analyzing trace with hash 91465797, now seen corresponding path program 20 times [2021-10-07 15:56:06,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:56:06,630 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [564057304] [2021-10-07 15:56:06,630 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:56:06,630 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:56:06,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:56:06,631 INFO L229 MonitoredProcess]: Starting monitored process 136 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:56:06,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (136)] Waiting until timeout for monitored process [2021-10-07 15:56:07,767 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:56:07,767 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:56:07,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:56:07,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:56:08,025 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:56:08,025 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:56:08,463 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:56:08,463 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:56:08,463 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [564057304] [2021-10-07 15:56:08,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [564057304] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:56:08,464 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:56:08,464 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-10-07 15:56:08,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36304905] [2021-10-07 15:56:08,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:56:08,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:56:08,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:56:08,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:56:08,465 INFO L87 Difference]: Start difference. First operand 662 states and 2694 transitions. Second operand has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:56:09,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:56:09,613 INFO L93 Difference]: Finished difference Result 1170 states and 4349 transitions. [2021-10-07 15:56:09,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-07 15:56:09,614 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:56:09,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:56:09,617 INFO L225 Difference]: With dead ends: 1170 [2021-10-07 15:56:09,617 INFO L226 Difference]: Without dead ends: 1166 [2021-10-07 15:56:09,617 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 882.8ms TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2021-10-07 15:56:09,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1166 states. [2021-10-07 15:56:09,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1166 to 668. [2021-10-07 15:56:09,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 668 states, 667 states have (on average 4.085457271364318) internal successors, (2725), 667 states have internal predecessors, (2725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:56:09,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 2725 transitions. [2021-10-07 15:56:09,633 INFO L78 Accepts]: Start accepts. Automaton has 668 states and 2725 transitions. Word has length 20 [2021-10-07 15:56:09,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:56:09,633 INFO L470 AbstractCegarLoop]: Abstraction has 668 states and 2725 transitions. [2021-10-07 15:56:09,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:56:09,634 INFO L276 IsEmpty]: Start isEmpty. Operand 668 states and 2725 transitions. [2021-10-07 15:56:09,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:56:09,635 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:56:09,635 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] [2021-10-07 15:56:09,648 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (136)] Ended with exit code 0 [2021-10-07 15:56:09,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 136 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:56:09,836 INFO L402 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:56:09,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:56:09,837 INFO L82 PathProgramCache]: Analyzing trace with hash 1131053721, now seen corresponding path program 45 times [2021-10-07 15:56:09,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:56:09,837 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1094732089] [2021-10-07 15:56:09,837 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:56:09,838 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:56:09,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:56:09,839 INFO L229 MonitoredProcess]: Starting monitored process 137 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:56:09,840 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (137)] Waiting until timeout for monitored process [2021-10-07 15:56:10,954 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 15:56:10,954 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:56:10,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:56:10,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:56:11,352 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:56:11,352 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:56:11,931 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:56:11,931 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:56:11,932 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1094732089] [2021-10-07 15:56:11,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1094732089] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:56:11,932 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:56:11,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-10-07 15:56:11,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927902598] [2021-10-07 15:56:11,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 15:56:11,933 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:56:11,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 15:56:11,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:56:11,933 INFO L87 Difference]: Start difference. First operand 668 states and 2725 transitions. Second operand has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:56:14,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:56:14,730 INFO L93 Difference]: Finished difference Result 1580 states and 5575 transitions. [2021-10-07 15:56:14,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-07 15:56:14,732 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:56:14,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:56:14,736 INFO L225 Difference]: With dead ends: 1580 [2021-10-07 15:56:14,736 INFO L226 Difference]: Without dead ends: 1580 [2021-10-07 15:56:14,736 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 1857.6ms TimeCoverageRelationStatistics Valid=217, Invalid=383, Unknown=0, NotChecked=0, Total=600 [2021-10-07 15:56:14,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1580 states. [2021-10-07 15:56:14,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1580 to 666. [2021-10-07 15:56:14,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 666 states, 665 states have (on average 4.082706766917293) internal successors, (2715), 665 states have internal predecessors, (2715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:56:14,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 2715 transitions. [2021-10-07 15:56:14,758 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 2715 transitions. Word has length 20 [2021-10-07 15:56:14,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:56:14,758 INFO L470 AbstractCegarLoop]: Abstraction has 666 states and 2715 transitions. [2021-10-07 15:56:14,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:56:14,758 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 2715 transitions. [2021-10-07 15:56:14,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:56:14,759 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:56:14,760 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] [2021-10-07 15:56:14,776 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (137)] Forceful destruction successful, exit code 0 [2021-10-07 15:56:14,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 137 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:56:14,961 INFO L402 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:56:14,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:56:14,961 INFO L82 PathProgramCache]: Analyzing trace with hash -923250107, now seen corresponding path program 21 times [2021-10-07 15:56:14,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:56:14,962 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [778285571] [2021-10-07 15:56:14,962 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:56:14,962 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:56:14,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:56:14,964 INFO L229 MonitoredProcess]: Starting monitored process 138 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:56:14,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (138)] Waiting until timeout for monitored process [2021-10-07 15:56:16,132 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 15:56:16,133 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:56:16,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:56:16,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:56:16,361 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:56:16,361 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:56:17,684 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:56:17,685 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:56:17,685 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [778285571] [2021-10-07 15:56:17,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [778285571] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-07 15:56:17,685 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:56:17,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-10-07 15:56:17,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423785058] [2021-10-07 15:56:17,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-07 15:56:17,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:56:17,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-07 15:56:17,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:56:17,686 INFO L87 Difference]: Start difference. First operand 666 states and 2715 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:56:17,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:56:17,979 INFO L93 Difference]: Finished difference Result 884 states and 3412 transitions. [2021-10-07 15:56:17,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-07 15:56:17,980 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:56:17,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:56:17,982 INFO L225 Difference]: With dead ends: 884 [2021-10-07 15:56:17,982 INFO L226 Difference]: Without dead ends: 884 [2021-10-07 15:56:17,983 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 1160.2ms TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:56:17,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 884 states. [2021-10-07 15:56:17,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 884 to 662. [2021-10-07 15:56:17,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 661 states have (on average 4.090771558245083) internal successors, (2704), 661 states have internal predecessors, (2704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:56:17,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 2704 transitions. [2021-10-07 15:56:17,996 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 2704 transitions. Word has length 20 [2021-10-07 15:56:17,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:56:17,996 INFO L470 AbstractCegarLoop]: Abstraction has 662 states and 2704 transitions. [2021-10-07 15:56:17,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:56:17,996 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 2704 transitions. [2021-10-07 15:56:17,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:56:17,998 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:56:17,998 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] [2021-10-07 15:56:18,014 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (138)] Ended with exit code 0 [2021-10-07 15:56:18,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 138 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:56:18,199 INFO L402 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:56:18,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:56:18,199 INFO L82 PathProgramCache]: Analyzing trace with hash -1461034813, now seen corresponding path program 64 times [2021-10-07 15:56:18,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:56:18,200 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1961147091] [2021-10-07 15:56:18,200 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:56:18,200 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:56:18,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:56:18,202 INFO L229 MonitoredProcess]: Starting monitored process 139 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:56:18,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (139)] Waiting until timeout for monitored process [2021-10-07 15:56:19,250 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:56:19,250 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:56:19,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:56:19,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:56:19,461 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:56:19,462 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:56:22,248 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:56:22,248 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:56:22,248 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1961147091] [2021-10-07 15:56:22,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1961147091] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-07 15:56:22,249 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:56:22,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2021-10-07 15:56:22,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843472416] [2021-10-07 15:56:22,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-07 15:56:22,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:56:22,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-07 15:56:22,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=115, Unknown=1, NotChecked=0, Total=156 [2021-10-07 15:56:22,250 INFO L87 Difference]: Start difference. First operand 662 states and 2704 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:56:22,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:56:22,814 INFO L93 Difference]: Finished difference Result 928 states and 3525 transitions. [2021-10-07 15:56:22,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-07 15:56:22,816 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:56:22,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:56:22,818 INFO L225 Difference]: With dead ends: 928 [2021-10-07 15:56:22,818 INFO L226 Difference]: Without dead ends: 926 [2021-10-07 15:56:22,819 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 2740.3ms TimeCoverageRelationStatistics Valid=84, Invalid=187, Unknown=1, NotChecked=0, Total=272 [2021-10-07 15:56:22,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2021-10-07 15:56:22,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 664. [2021-10-07 15:56:22,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 663 states have (on average 4.085972850678733) internal successors, (2709), 663 states have internal predecessors, (2709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:56:22,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 2709 transitions. [2021-10-07 15:56:22,834 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 2709 transitions. Word has length 20 [2021-10-07 15:56:22,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:56:22,834 INFO L470 AbstractCegarLoop]: Abstraction has 664 states and 2709 transitions. [2021-10-07 15:56:22,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:56:22,834 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 2709 transitions. [2021-10-07 15:56:22,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:56:22,835 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:56:22,836 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] [2021-10-07 15:56:22,849 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (139)] Ended with exit code 0 [2021-10-07 15:56:23,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 139 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:56:23,037 INFO L402 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:56:23,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:56:23,037 INFO L82 PathProgramCache]: Analyzing trace with hash 533841755, now seen corresponding path program 65 times [2021-10-07 15:56:23,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:56:23,038 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1168437668] [2021-10-07 15:56:23,038 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:56:23,038 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:56:23,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:56:23,040 INFO L229 MonitoredProcess]: Starting monitored process 140 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:56:23,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (140)] Waiting until timeout for monitored process [2021-10-07 15:56:24,119 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:56:24,119 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:56:24,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:56:24,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:56:24,409 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:56:24,409 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:56:27,412 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:56:27,413 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:56:27,413 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1168437668] [2021-10-07 15:56:27,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1168437668] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:56:27,413 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:56:27,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-10-07 15:56:27,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507511428] [2021-10-07 15:56:27,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:56:27,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:56:27,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:56:27,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=129, Unknown=1, NotChecked=0, Total=182 [2021-10-07 15:56:27,415 INFO L87 Difference]: Start difference. First operand 664 states and 2709 transitions. Second operand has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:56:41,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:56:41,923 INFO L93 Difference]: Finished difference Result 1572 states and 5350 transitions. [2021-10-07 15:56:41,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-07 15:56:41,947 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:56:41,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:56:41,951 INFO L225 Difference]: With dead ends: 1572 [2021-10-07 15:56:41,951 INFO L226 Difference]: Without dead ends: 1572 [2021-10-07 15:56:41,951 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 5497.8ms TimeCoverageRelationStatistics Valid=298, Invalid=757, Unknown=1, NotChecked=0, Total=1056 [2021-10-07 15:56:41,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1572 states. [2021-10-07 15:56:41,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1572 to 668. [2021-10-07 15:56:41,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 668 states, 667 states have (on average 4.10944527736132) internal successors, (2741), 667 states have internal predecessors, (2741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:56:41,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 2741 transitions. [2021-10-07 15:56:41,972 INFO L78 Accepts]: Start accepts. Automaton has 668 states and 2741 transitions. Word has length 20 [2021-10-07 15:56:41,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:56:41,973 INFO L470 AbstractCegarLoop]: Abstraction has 668 states and 2741 transitions. [2021-10-07 15:56:41,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:56:41,973 INFO L276 IsEmpty]: Start isEmpty. Operand 668 states and 2741 transitions. [2021-10-07 15:56:41,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:56:41,975 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:56:41,975 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] [2021-10-07 15:56:41,994 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (140)] Ended with exit code 0 [2021-10-07 15:56:42,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 140 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:56:42,189 INFO L402 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:56:42,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:56:42,189 INFO L82 PathProgramCache]: Analyzing trace with hash -1466286365, now seen corresponding path program 66 times [2021-10-07 15:56:42,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:56:42,190 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1352527320] [2021-10-07 15:56:42,190 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:56:42,190 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:56:42,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:56:42,192 INFO L229 MonitoredProcess]: Starting monitored process 141 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:56:42,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (141)] Waiting until timeout for monitored process [2021-10-07 15:56:43,443 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-07 15:56:43,443 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:56:43,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:56:43,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:56:43,647 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:56:43,647 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:56:46,457 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:56:46,457 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:56:46,458 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1352527320] [2021-10-07 15:56:46,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1352527320] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-07 15:56:46,458 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:56:46,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2021-10-07 15:56:46,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770038558] [2021-10-07 15:56:46,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-07 15:56:46,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:56:46,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-07 15:56:46,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=119, Unknown=1, NotChecked=0, Total=156 [2021-10-07 15:56:46,459 INFO L87 Difference]: Start difference. First operand 668 states and 2741 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:56:46,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:56:46,950 INFO L93 Difference]: Finished difference Result 934 states and 3560 transitions. [2021-10-07 15:56:46,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-07 15:56:46,951 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:56:46,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:56:46,954 INFO L225 Difference]: With dead ends: 934 [2021-10-07 15:56:46,954 INFO L226 Difference]: Without dead ends: 932 [2021-10-07 15:56:46,954 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 2750.4ms TimeCoverageRelationStatistics Valid=78, Invalid=193, Unknown=1, NotChecked=0, Total=272 [2021-10-07 15:56:46,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 932 states. [2021-10-07 15:56:46,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 932 to 670. [2021-10-07 15:56:46,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 670 states, 669 states have (on average 4.104633781763827) internal successors, (2746), 669 states have internal predecessors, (2746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:56:46,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 2746 transitions. [2021-10-07 15:56:46,967 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 2746 transitions. Word has length 20 [2021-10-07 15:56:46,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:56:46,968 INFO L470 AbstractCegarLoop]: Abstraction has 670 states and 2746 transitions. [2021-10-07 15:56:46,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:56:46,968 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 2746 transitions. [2021-10-07 15:56:46,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:56:46,969 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:56:46,969 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] [2021-10-07 15:56:46,983 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (141)] Forceful destruction successful, exit code 0 [2021-10-07 15:56:47,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 141 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:56:47,170 INFO L402 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:56:47,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:56:47,171 INFO L82 PathProgramCache]: Analyzing trace with hash -158843045, now seen corresponding path program 67 times [2021-10-07 15:56:47,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:56:47,171 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1603614007] [2021-10-07 15:56:47,172 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:56:47,172 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:56:47,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:56:47,173 INFO L229 MonitoredProcess]: Starting monitored process 142 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:56:47,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (142)] Waiting until timeout for monitored process [2021-10-07 15:56:48,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:56:48,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:56:48,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:56:48,515 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:56:48,515 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:56:51,358 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:56:51,359 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:56:51,359 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1603614007] [2021-10-07 15:56:51,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1603614007] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:56:51,359 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:56:51,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-10-07 15:56:51,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562754328] [2021-10-07 15:56:51,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:56:51,360 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:56:51,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:56:51,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=137, Unknown=1, NotChecked=0, Total=182 [2021-10-07 15:56:51,361 INFO L87 Difference]: Start difference. First operand 670 states and 2746 transitions. Second operand has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:57:05,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:57:05,730 INFO L93 Difference]: Finished difference Result 1384 states and 4763 transitions. [2021-10-07 15:57:05,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-07 15:57:05,733 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:57:05,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:57:05,737 INFO L225 Difference]: With dead ends: 1384 [2021-10-07 15:57:05,737 INFO L226 Difference]: Without dead ends: 1384 [2021-10-07 15:57:05,737 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 5917.0ms TimeCoverageRelationStatistics Valid=296, Invalid=825, Unknown=1, NotChecked=0, Total=1122 [2021-10-07 15:57:05,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1384 states. [2021-10-07 15:57:05,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1384 to 670. [2021-10-07 15:57:05,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 670 states, 669 states have (on average 4.110612855007473) internal successors, (2750), 669 states have internal predecessors, (2750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:57:05,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 2750 transitions. [2021-10-07 15:57:05,756 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 2750 transitions. Word has length 20 [2021-10-07 15:57:05,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:57:05,756 INFO L470 AbstractCegarLoop]: Abstraction has 670 states and 2750 transitions. [2021-10-07 15:57:05,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:57:05,757 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 2750 transitions. [2021-10-07 15:57:05,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:57:05,758 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:57:05,758 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] [2021-10-07 15:57:05,772 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (142)] Forceful destruction successful, exit code 0 [2021-10-07 15:57:05,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 142 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:57:05,959 INFO L402 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:57:05,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:57:05,960 INFO L82 PathProgramCache]: Analyzing trace with hash 1552788419, now seen corresponding path program 68 times [2021-10-07 15:57:05,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:57:05,960 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1140909654] [2021-10-07 15:57:05,960 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:57:05,961 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:57:05,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:57:05,962 INFO L229 MonitoredProcess]: Starting monitored process 143 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:57:05,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (143)] Waiting until timeout for monitored process [2021-10-07 15:57:07,202 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:57:07,203 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:57:07,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:57:07,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:57:07,468 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:57:07,468 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:57:10,546 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:57:10,546 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:57:10,546 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1140909654] [2021-10-07 15:57:10,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1140909654] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:57:10,547 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:57:10,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-10-07 15:57:10,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387382417] [2021-10-07 15:57:10,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:57:10,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:57:10,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:57:10,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=128, Unknown=1, NotChecked=0, Total=182 [2021-10-07 15:57:10,548 INFO L87 Difference]: Start difference. First operand 670 states and 2750 transitions. Second operand has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:57:25,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:57:25,102 INFO L93 Difference]: Finished difference Result 1480 states and 5110 transitions. [2021-10-07 15:57:25,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-07 15:57:25,105 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:57:25,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:57:25,109 INFO L225 Difference]: With dead ends: 1480 [2021-10-07 15:57:25,109 INFO L226 Difference]: Without dead ends: 1480 [2021-10-07 15:57:25,109 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 7272.1ms TimeCoverageRelationStatistics Valid=288, Invalid=581, Unknown=1, NotChecked=0, Total=870 [2021-10-07 15:57:25,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1480 states. [2021-10-07 15:57:25,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1480 to 666. [2021-10-07 15:57:25,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 666 states, 665 states have (on average 4.09624060150376) internal successors, (2724), 665 states have internal predecessors, (2724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:57:25,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 2724 transitions. [2021-10-07 15:57:25,128 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 2724 transitions. Word has length 20 [2021-10-07 15:57:25,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:57:25,128 INFO L470 AbstractCegarLoop]: Abstraction has 666 states and 2724 transitions. [2021-10-07 15:57:25,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:57:25,128 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 2724 transitions. [2021-10-07 15:57:25,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:57:25,129 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:57:25,129 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] [2021-10-07 15:57:25,144 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (143)] Ended with exit code 0 [2021-10-07 15:57:25,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 143 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:57:25,330 INFO L402 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:57:25,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:57:25,331 INFO L82 PathProgramCache]: Analyzing trace with hash 2118508909, now seen corresponding path program 22 times [2021-10-07 15:57:25,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:57:25,331 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [420578526] [2021-10-07 15:57:25,332 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:57:25,332 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:57:25,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:57:25,333 INFO L229 MonitoredProcess]: Starting monitored process 144 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:57:25,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (144)] Waiting until timeout for monitored process [2021-10-07 15:57:26,458 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:57:26,458 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:57:26,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:57:26,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:57:26,751 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:57:26,751 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:57:27,386 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:57:27,386 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:57:27,387 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [420578526] [2021-10-07 15:57:27,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [420578526] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:57:27,387 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:57:27,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2021-10-07 15:57:27,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309570009] [2021-10-07 15:57:27,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 15:57:27,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:57:27,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 15:57:27,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:57:27,388 INFO L87 Difference]: Start difference. First operand 666 states and 2724 transitions. Second operand has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:57:29,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:57:29,893 INFO L93 Difference]: Finished difference Result 1300 states and 4702 transitions. [2021-10-07 15:57:29,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-07 15:57:29,895 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:57:29,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:57:29,898 INFO L225 Difference]: With dead ends: 1300 [2021-10-07 15:57:29,898 INFO L226 Difference]: Without dead ends: 1300 [2021-10-07 15:57:29,898 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 1915.7ms TimeCoverageRelationStatistics Valid=166, Invalid=340, Unknown=0, NotChecked=0, Total=506 [2021-10-07 15:57:29,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1300 states. [2021-10-07 15:57:29,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1300 to 674. [2021-10-07 15:57:29,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 674 states, 673 states have (on average 4.112927191679049) internal successors, (2768), 673 states have internal predecessors, (2768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:57:29,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 674 states to 674 states and 2768 transitions. [2021-10-07 15:57:29,917 INFO L78 Accepts]: Start accepts. Automaton has 674 states and 2768 transitions. Word has length 20 [2021-10-07 15:57:29,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:57:29,917 INFO L470 AbstractCegarLoop]: Abstraction has 674 states and 2768 transitions. [2021-10-07 15:57:29,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:57:29,917 INFO L276 IsEmpty]: Start isEmpty. Operand 674 states and 2768 transitions. [2021-10-07 15:57:29,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:57:29,919 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:57:29,919 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] [2021-10-07 15:57:29,936 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (144)] Forceful destruction successful, exit code 0 [2021-10-07 15:57:30,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 144 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:57:30,120 INFO L402 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:57:30,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:57:30,121 INFO L82 PathProgramCache]: Analyzing trace with hash -1334140561, now seen corresponding path program 69 times [2021-10-07 15:57:30,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:57:30,121 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [521298652] [2021-10-07 15:57:30,122 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:57:30,122 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:57:30,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:57:30,123 INFO L229 MonitoredProcess]: Starting monitored process 145 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:57:30,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (145)] Waiting until timeout for monitored process [2021-10-07 15:57:31,346 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 15:57:31,346 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:57:31,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:57:31,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:57:31,573 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:57:31,573 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:57:32,089 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:57:32,089 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:57:32,089 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [521298652] [2021-10-07 15:57:32,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [521298652] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-07 15:57:32,089 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:57:32,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2021-10-07 15:57:32,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473917348] [2021-10-07 15:57:32,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-07 15:57:32,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:57:32,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-07 15:57:32,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:57:32,091 INFO L87 Difference]: Start difference. First operand 674 states and 2768 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:57:32,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:57:32,522 INFO L93 Difference]: Finished difference Result 874 states and 3394 transitions. [2021-10-07 15:57:32,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-07 15:57:32,523 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:57:32,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:57:32,525 INFO L225 Difference]: With dead ends: 874 [2021-10-07 15:57:32,526 INFO L226 Difference]: Without dead ends: 872 [2021-10-07 15:57:32,526 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 541.3ms TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2021-10-07 15:57:32,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2021-10-07 15:57:32,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 678. [2021-10-07 15:57:32,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 678 states, 677 states have (on average 4.1063515509601185) internal successors, (2780), 677 states have internal predecessors, (2780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:57:32,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 2780 transitions. [2021-10-07 15:57:32,540 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 2780 transitions. Word has length 20 [2021-10-07 15:57:32,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:57:32,540 INFO L470 AbstractCegarLoop]: Abstraction has 678 states and 2780 transitions. [2021-10-07 15:57:32,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:57:32,540 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 2780 transitions. [2021-10-07 15:57:32,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:57:32,542 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:57:32,542 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] [2021-10-07 15:57:32,557 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (145)] Forceful destruction successful, exit code 0 [2021-10-07 15:57:32,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 145 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:57:32,743 INFO L402 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:57:32,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:57:32,743 INFO L82 PathProgramCache]: Analyzing trace with hash 660736007, now seen corresponding path program 70 times [2021-10-07 15:57:32,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:57:32,744 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1628465403] [2021-10-07 15:57:32,744 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:57:32,744 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:57:32,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:57:32,746 INFO L229 MonitoredProcess]: Starting monitored process 146 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:57:32,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (146)] Waiting until timeout for monitored process [2021-10-07 15:57:33,882 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:57:33,882 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:57:33,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:57:33,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:57:34,187 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:57:34,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:57:34,661 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:57:34,661 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:57:34,661 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1628465403] [2021-10-07 15:57:34,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1628465403] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:57:34,662 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:57:34,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-10-07 15:57:34,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935140162] [2021-10-07 15:57:34,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:57:34,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:57:34,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:57:34,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:57:34,663 INFO L87 Difference]: Start difference. First operand 678 states and 2780 transitions. Second operand has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:57:37,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:57:37,813 INFO L93 Difference]: Finished difference Result 1444 states and 5017 transitions. [2021-10-07 15:57:37,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-07 15:57:37,814 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:57:37,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:57:37,818 INFO L225 Difference]: With dead ends: 1444 [2021-10-07 15:57:37,818 INFO L226 Difference]: Without dead ends: 1444 [2021-10-07 15:57:37,818 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 2005.0ms TimeCoverageRelationStatistics Valid=239, Invalid=517, Unknown=0, NotChecked=0, Total=756 [2021-10-07 15:57:37,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1444 states. [2021-10-07 15:57:37,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1444 to 676. [2021-10-07 15:57:37,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 676 states, 675 states have (on average 4.111111111111111) internal successors, (2775), 675 states have internal predecessors, (2775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:57:37,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 676 states to 676 states and 2775 transitions. [2021-10-07 15:57:37,838 INFO L78 Accepts]: Start accepts. Automaton has 676 states and 2775 transitions. Word has length 20 [2021-10-07 15:57:37,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:57:37,838 INFO L470 AbstractCegarLoop]: Abstraction has 676 states and 2775 transitions. [2021-10-07 15:57:37,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:57:37,838 INFO L276 IsEmpty]: Start isEmpty. Operand 676 states and 2775 transitions. [2021-10-07 15:57:37,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:57:37,839 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:57:37,839 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] [2021-10-07 15:57:37,854 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (146)] Forceful destruction successful, exit code 0 [2021-10-07 15:57:38,040 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 146 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:57:38,040 INFO L402 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-07 15:57:38,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:57:38,041 INFO L82 PathProgramCache]: Analyzing trace with hash -226920093, now seen corresponding path program 71 times [2021-10-07 15:57:38,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:57:38,042 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [845981147] [2021-10-07 15:57:38,042 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:57:38,042 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:57:38,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:57:38,044 INFO L229 MonitoredProcess]: Starting monitored process 147 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:57:38,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (147)] Waiting until timeout for monitored process [2021-10-07 15:57:39,135 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:57:39,135 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:57:39,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:57:39,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:57:39,329 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:57:39,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:57:39,783 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:57:39,784 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:57:39,784 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [845981147] [2021-10-07 15:57:39,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [845981147] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-07 15:57:39,784 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 15:57:39,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2021-10-07 15:57:39,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740297062] [2021-10-07 15:57:39,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-07 15:57:39,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:57:39,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-07 15:57:39,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:57:39,786 INFO L87 Difference]: Start difference. First operand 676 states and 2775 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2021-10-07 15:57:40,195 WARN L223 SmtUtils]: Removed 1 from assertion stack [2021-10-07 15:57:40,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-07 15:57:40,196 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK [2021-10-07 15:57:40,198 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (147)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-07 15:57:40,199 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-07 15:57:40,214 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (147)] Forceful destruction successful, exit code 0 [2021-10-07 15:57:40,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 147 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:57:40,397 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (676states) and FLOYD_HOARE automaton (currently 6 states, 7 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 17 for 0ms.. [2021-10-07 15:57:40,400 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-07 15:57:40,400 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-07 15:57:40,400 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-07 15:57:40,400 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-07 15:57:40,401 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-07 15:57:40,401 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-07 15:57:40,401 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-07 15:57:40,401 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-07 15:57:40,401 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-07 15:57:40,401 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-07 15:57:40,401 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr10REQUIRES_VIOLATION [2021-10-07 15:57:40,401 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr11REQUIRES_VIOLATION [2021-10-07 15:57:40,402 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK [2021-10-07 15:57:40,402 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-07 15:57:40,402 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-07 15:57:40,402 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-07 15:57:40,408 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-07 15:57:40,408 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-07 15:57:40,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.10 03:57:40 BasicIcfg [2021-10-07 15:57:40,412 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-07 15:57:40,413 INFO L168 Benchmark]: Toolchain (without parser) took 831920.13 ms. Allocated memory was 175.1 MB in the beginning and 260.0 MB in the end (delta: 84.9 MB). Free memory was 149.6 MB in the beginning and 212.4 MB in the end (delta: -62.8 MB). Peak memory consumption was 23.4 MB. Max. memory is 8.0 GB. [2021-10-07 15:57:40,413 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 175.1 MB. Free memory is still 146.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-07 15:57:40,413 INFO L168 Benchmark]: CACSL2BoogieTranslator took 331.84 ms. Allocated memory is still 175.1 MB. Free memory was 149.4 MB in the beginning and 138.5 MB in the end (delta: 10.8 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-10-07 15:57:40,413 INFO L168 Benchmark]: Boogie Procedure Inliner took 73.92 ms. Allocated memory is still 175.1 MB. Free memory was 138.5 MB in the beginning and 136.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-07 15:57:40,414 INFO L168 Benchmark]: Boogie Preprocessor took 62.36 ms. Allocated memory is still 175.1 MB. Free memory was 136.8 MB in the beginning and 135.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-07 15:57:40,414 INFO L168 Benchmark]: RCFGBuilder took 691.54 ms. Allocated memory is still 175.1 MB. Free memory was 135.4 MB in the beginning and 122.0 MB in the end (delta: 13.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-10-07 15:57:40,414 INFO L168 Benchmark]: TraceAbstraction took 830735.73 ms. Allocated memory was 175.1 MB in the beginning and 260.0 MB in the end (delta: 84.9 MB). Free memory was 121.4 MB in the beginning and 212.4 MB in the end (delta: -91.0 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-10-07 15:57:40,416 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 175.1 MB. Free memory is still 146.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 331.84 ms. Allocated memory is still 175.1 MB. Free memory was 149.4 MB in the beginning and 138.5 MB in the end (delta: 10.8 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 73.92 ms. Allocated memory is still 175.1 MB. Free memory was 138.5 MB in the beginning and 136.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 62.36 ms. Allocated memory is still 175.1 MB. Free memory was 136.8 MB in the beginning and 135.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 691.54 ms. Allocated memory is still 175.1 MB. Free memory was 135.4 MB in the beginning and 122.0 MB in the end (delta: 13.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 830735.73 ms. Allocated memory was 175.1 MB in the beginning and 260.0 MB in the end (delta: 84.9 MB). Free memory was 121.4 MB in the beginning and 212.4 MB in the end (delta: -91.0 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 9229.7ms, 120 PlacesBefore, 46 PlacesAfterwards, 117 TransitionsBefore, 39 TransitionsAfterwards, 1680 CoEnabledTransitionPairs, 6 FixpointIterations, 56 TrivialSequentialCompositions, 43 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 4 ChoiceCompositions, 109 TotalNumberOfCompositions, 1830 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1830, positive: 1830, positive conditional: 0, positive unconditional: 1830, 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: 1040, positive: 1040, positive conditional: 0, positive unconditional: 1040, 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: 1040, positive: 1040, positive conditional: 0, positive unconditional: 1040, 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: 1830, positive: 790, positive conditional: 0, positive unconditional: 790, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 1040, unknown conditional: 0, unknown unconditional: 1040] , Statistics on independence cache: Total cache size (in pairs): 78, Positive cache size: 78, Positive conditional cache size: 0, Positive unconditional cache size: 78, 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: 80]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while BasicCegarLoop was constructing difference of abstraction (676states) and FLOYD_HOARE automaton (currently 6 states, 7 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 17 for 0ms.. - TimeoutResultAtElement [Line: 72]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (676states) and FLOYD_HOARE automaton (currently 6 states, 7 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 17 for 0ms.. - TimeoutResultAtElement [Line: 72]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (676states) and FLOYD_HOARE automaton (currently 6 states, 7 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 17 for 0ms.. - TimeoutResultAtElement [Line: 73]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (676states) and FLOYD_HOARE automaton (currently 6 states, 7 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 17 for 0ms.. - TimeoutResultAtElement [Line: 73]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (676states) and FLOYD_HOARE automaton (currently 6 states, 7 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 17 for 0ms.. - TimeoutResultAtElement [Line: 74]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (676states) and FLOYD_HOARE automaton (currently 6 states, 7 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 17 for 0ms.. - TimeoutResultAtElement [Line: 74]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (676states) and FLOYD_HOARE automaton (currently 6 states, 7 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 17 for 0ms.. - TimeoutResultAtElement [Line: 75]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (676states) and FLOYD_HOARE automaton (currently 6 states, 7 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 17 for 0ms.. - TimeoutResultAtElement [Line: 75]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (676states) and FLOYD_HOARE automaton (currently 6 states, 7 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 17 for 0ms.. - TimeoutResultAtElement [Line: 76]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (676states) and FLOYD_HOARE automaton (currently 6 states, 7 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 17 for 0ms.. - TimeoutResultAtElement [Line: 76]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (676states) and FLOYD_HOARE automaton (currently 6 states, 7 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 17 for 0ms.. - TimeoutResultAtElement [Line: 77]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (676states) and FLOYD_HOARE automaton (currently 6 states, 7 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 17 for 0ms.. - TimeoutResultAtElement [Line: 77]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (676states) and FLOYD_HOARE automaton (currently 6 states, 7 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 17 for 0ms.. - TimeoutResultAtElement [Line: 64]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while BasicCegarLoop was constructing difference of abstraction (676states) and FLOYD_HOARE automaton (currently 6 states, 7 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 17 for 0ms.. - TimeoutResultAtElement [Line: 73]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (676states) and FLOYD_HOARE automaton (currently 6 states, 7 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 17 for 0ms.. - TimeoutResultAtElement [Line: 72]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (676states) and FLOYD_HOARE automaton (currently 6 states, 7 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 17 for 0ms.. - TimeoutResultAtElement [Line: 74]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (676states) and FLOYD_HOARE automaton (currently 6 states, 7 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 17 for 0ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 141 locations, 17 error locations. Started 1 CEGAR loops. OverallTime: 830491.0ms, OverallIterations: 146, TraceHistogramMax: 1, EmptinessCheckTime: 228.1ms, AutomataDifference: 529142.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9305.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 9410 SDtfs, 16133 SDslu, 32887 SDs, 0 SdLazy, 29772 SolverSat, 1226 SolverUnsat, 60 SolverUnknown, 0 SolverNotchecked, 321616.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7441 GetRequests, 4746 SyntacticMatches, 74 SemanticMatches, 2620 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10977 ImplicationChecksByTransitivity, 303894.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=686occurred in iteration=131, InterpolantAutomatonStates: 2072, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 2464.4ms AutomataMinimizationTime, 145 MinimizatonAttempts, 56862 StatesRemovedByMinimization, 137 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1055.8ms SsaConstructionTime, 15877.4ms SatisfiabilityAnalysisTime, 164675.2ms InterpolantComputationTime, 2810 NumberOfCodeBlocks, 2810 NumberOfCodeBlocksAsserted, 237 NumberOfCheckSat, 5328 ConstructedInterpolants, 554 QuantifiedInterpolants, 24895 SizeOfPredicates, 868 NumberOfNonLiveVariables, 13062 ConjunctsInSsa, 1109 ConjunctsInUnsatCore, 292 InterpolantComputations, 95 PerfectInterpolantSequences, 79/276 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