/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 [2021-10-08 17:08:22,858 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-08 17:08:22,862 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-08 17:08:22,932 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-08 17:08:23,046 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-08 17:08:23,047 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-08 17:08:23,049 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-08 17:08:23,058 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-08 17:08:23,111 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-08 17:08:23,111 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-08 17:08:23,113 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-08 17:08:23,113 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-08 17:08:23,119 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-08 17:08:23,120 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-08 17:08:23,120 INFO L138 SettingsManager]: * Use SBE=true [2021-10-08 17:08:23,120 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-08 17:08:23,121 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-08 17:08:23,121 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-08 17:08:23,126 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-08 17:08:23,127 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-08 17:08:23,127 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-08 17:08:23,127 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-08 17:08:23,127 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-08 17:08:23,128 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-08 17:08:23,129 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-08 17:08:23,130 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-08 17:08:23,130 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-08 17:08:23,132 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-08 17:08:23,132 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-08 17:08:23,132 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-08 17:08:23,133 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-08 17:08:23,133 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-08 17:08:23,135 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-08 17:08:23,135 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-08 17:08:23,136 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-08 17:08:23,136 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-08 17:08:23,136 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-08 17:08:23,137 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-08 17:08:23,137 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-08 17:08:23,137 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-08 17:08:23,138 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-08 17:08:23,623 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-08 17:08:23,656 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-08 17:08:23,659 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-08 17:08:23,661 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-08 17:08:23,662 INFO L275 PluginConnector]: CDTParser initialized [2021-10-08 17:08:23,663 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/mult-dist.wvr.c [2021-10-08 17:08:23,746 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/97704f952/2af59fb915a5465aae2d31fe5d78f601/FLAG0891a1244 [2021-10-08 17:08:24,429 INFO L306 CDTParser]: Found 1 translation units. [2021-10-08 17:08:24,430 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/mult-dist.wvr.c [2021-10-08 17:08:24,439 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/97704f952/2af59fb915a5465aae2d31fe5d78f601/FLAG0891a1244 [2021-10-08 17:08:24,784 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/97704f952/2af59fb915a5465aae2d31fe5d78f601 [2021-10-08 17:08:24,788 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-08 17:08:24,799 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-08 17:08:24,801 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-08 17:08:24,801 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-08 17:08:24,805 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-08 17:08:24,806 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.10 05:08:24" (1/1) ... [2021-10-08 17:08:24,808 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a6649b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:08:24, skipping insertion in model container [2021-10-08 17:08:24,808 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.10 05:08:24" (1/1) ... [2021-10-08 17:08:24,817 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-08 17:08:24,837 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-08 17:08:25,026 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] [2021-10-08 17:08:25,031 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 17:08:25,047 INFO L203 MainTranslator]: Completed pre-run [2021-10-08 17:08:25,073 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] [2021-10-08 17:08:25,074 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 17:08:25,096 INFO L208 MainTranslator]: Completed translation [2021-10-08 17:08:25,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:08:25 WrapperNode [2021-10-08 17:08:25,097 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-08 17:08:25,099 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-08 17:08:25,100 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-08 17:08:25,100 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-08 17:08:25,108 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:08:25" (1/1) ... [2021-10-08 17:08:25,122 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:08:25" (1/1) ... [2021-10-08 17:08:25,148 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-08 17:08:25,149 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-08 17:08:25,149 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-08 17:08:25,149 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-08 17:08:25,158 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:08:25" (1/1) ... [2021-10-08 17:08:25,158 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:08:25" (1/1) ... [2021-10-08 17:08:25,163 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:08:25" (1/1) ... [2021-10-08 17:08:25,163 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:08:25" (1/1) ... [2021-10-08 17:08:25,172 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:08:25" (1/1) ... [2021-10-08 17:08:25,177 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:08:25" (1/1) ... [2021-10-08 17:08:25,179 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:08:25" (1/1) ... [2021-10-08 17:08:25,183 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-08 17:08:25,184 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-08 17:08:25,185 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-08 17:08:25,185 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-08 17:08:25,186 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:08:25" (1/1) ... [2021-10-08 17:08:25,195 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-08 17:08:25,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 17:08:25,229 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-08 17:08:25,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-08 17:08:25,303 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-08 17:08:25,303 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-08 17:08:25,303 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-08 17:08:25,304 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-08 17:08:25,304 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-08 17:08:25,304 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-08 17:08:25,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-08 17:08:25,305 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-08 17:08:25,306 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-08 17:08:25,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-08 17:08:25,309 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-08 17:08:25,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-08 17:08:25,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-08 17:08:25,313 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-08 17:08:25,885 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-08 17:08:25,886 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-10-08 17:08:25,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 05:08:25 BoogieIcfgContainer [2021-10-08 17:08:25,890 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-08 17:08:25,893 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-08 17:08:25,893 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-08 17:08:25,897 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-08 17:08:25,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.10 05:08:24" (1/3) ... [2021-10-08 17:08:25,899 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50630049 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.10 05:08:25, skipping insertion in model container [2021-10-08 17:08:25,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:08:25" (2/3) ... [2021-10-08 17:08:25,900 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50630049 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.10 05:08:25, skipping insertion in model container [2021-10-08 17:08:25,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 05:08:25" (3/3) ... [2021-10-08 17:08:25,902 INFO L111 eAbstractionObserver]: Analyzing ICFG mult-dist.wvr.c [2021-10-08 17:08:25,909 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-08 17:08:25,909 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2021-10-08 17:08:25,910 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-08 17:08:26,017 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:08:26,018 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:08:26,019 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:08:26,019 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:08:26,021 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:08:26,021 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:08:26,022 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:08:26,023 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:08:26,024 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:08:26,033 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:08:26,033 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:08:26,033 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:08:26,034 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:08:26,034 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:08:26,034 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:08:26,034 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:08:26,035 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:08:26,035 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:08:26,035 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:08:26,035 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:08:26,036 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:08:26,036 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:08:26,037 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:08:26,037 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:08:26,037 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:08:26,037 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:08:26,038 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:08:26,039 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:08:26,040 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:08:26,040 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:08:26,041 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:08:26,042 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:08:26,042 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:08:26,042 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:08:26,042 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:08:26,043 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:08:26,043 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:08:26,043 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:08:26,043 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:08:26,044 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:08:26,045 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:08:26,045 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:08:26,046 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:08:26,046 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:08:26,047 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:08:26,047 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:08:26,047 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:08:26,048 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:08:26,048 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:08:26,048 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:08:26,053 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:08:26,053 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:08:26,055 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:08:26,056 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:08:26,056 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:08:26,056 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:08:26,057 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:08:26,057 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:08:26,057 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:08:26,057 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:08:26,066 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:08:26,067 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:08:26,068 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:08:26,068 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:08:26,081 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:08:26,082 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:08:26,083 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:08:26,083 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:08:26,086 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:08:26,087 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:08:26,087 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:08:26,087 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:08:26,110 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-10-08 17:08:26,185 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-08 17:08:26,199 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-08 17:08:26,199 INFO L340 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2021-10-08 17:08:26,239 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-08 17:08:26,253 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 120 places, 117 transitions, 258 flow [2021-10-08 17:08:26,256 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 120 places, 117 transitions, 258 flow [2021-10-08 17:08:26,259 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 120 places, 117 transitions, 258 flow [2021-10-08 17:08:26,352 INFO L129 PetriNetUnfolder]: 7/114 cut-off events. [2021-10-08 17:08:26,352 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-08 17:08:26,358 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. [2021-10-08 17:08:26,365 INFO L116 LiptonReduction]: Number of co-enabled transitions 1680 [2021-10-08 17:08:36,131 INFO L131 LiptonReduction]: Checked pairs total: 1830 [2021-10-08 17:08:36,132 INFO L133 LiptonReduction]: Total number of compositions: 109 [2021-10-08 17:08:36,141 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 46 places, 39 transitions, 102 flow [2021-10-08 17:08:36,173 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) [2021-10-08 17:08:36,184 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) [2021-10-08 17:08:36,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2021-10-08 17:08:36,190 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:08:36,191 INFO L512 BasicCegarLoop]: trace histogram [1] [2021-10-08 17:08:36,191 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:08:36,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:08:36,197 INFO L82 PathProgramCache]: Analyzing trace with hash 437, now seen corresponding path program 1 times [2021-10-08 17:08:36,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:08:36,212 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [68034652] [2021-10-08 17:08:36,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:08:36,213 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:08:36,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:08:36,217 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:08:36,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-08 17:08:36,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:08:36,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-08 17:08:36,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:08:36,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:08:36,298 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:08:36,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:08:36,299 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:08:36,300 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [68034652] [2021-10-08 17:08:36,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [68034652] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:08:36,301 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:08:36,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0, 0] imperfect sequences [] total 0 [2021-10-08 17:08:36,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166907508] [2021-10-08 17:08:36,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-08 17:08:36,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:08:36,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-08 17:08:36,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-08 17:08:36,329 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) [2021-10-08 17:08:36,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:08:36,361 INFO L93 Difference]: Finished difference Result 208 states and 673 transitions. [2021-10-08 17:08:36,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-08 17:08:36,363 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1 [2021-10-08 17:08:36,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:08:36,383 INFO L225 Difference]: With dead ends: 208 [2021-10-08 17:08:36,383 INFO L226 Difference]: Without dead ends: 208 [2021-10-08 17:08:36,385 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-08 17:08:36,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-10-08 17:08:36,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2021-10-08 17:08:36,456 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) [2021-10-08 17:08:36,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 673 transitions. [2021-10-08 17:08:36,486 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 673 transitions. Word has length 1 [2021-10-08 17:08:36,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:08:36,487 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 673 transitions. [2021-10-08 17:08:36,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:08:36,488 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 673 transitions. [2021-10-08 17:08:36,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-08 17:08:36,488 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:08:36,489 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-08 17:08:36,503 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-08 17:08:36,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:08:36,703 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:08:36,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:08:36,705 INFO L82 PathProgramCache]: Analyzing trace with hash 430422, now seen corresponding path program 1 times [2021-10-08 17:08:36,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:08:36,707 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [544961575] [2021-10-08 17:08:36,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:08:36,707 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:08:36,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:08:36,708 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:08:36,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-08 17:08:36,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:08:36,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-08 17:08:36,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:08:36,960 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-10-08 17:08:36,962 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 [2021-10-08 17:08:37,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:08:37,051 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:08:37,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:08:37,073 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:08:37,073 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [544961575] [2021-10-08 17:08:37,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [544961575] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:08:37,074 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:08:37,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-08 17:08:37,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301477226] [2021-10-08 17:08:37,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 17:08:37,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:08:37,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 17:08:37,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 17:08:37,077 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) [2021-10-08 17:08:37,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:08:37,141 INFO L93 Difference]: Finished difference Result 196 states and 640 transitions. [2021-10-08 17:08:37,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 17:08:37,143 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 [2021-10-08 17:08:37,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:08:37,147 INFO L225 Difference]: With dead ends: 196 [2021-10-08 17:08:37,147 INFO L226 Difference]: Without dead ends: 196 [2021-10-08 17:08:37,148 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 27.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 17:08:37,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2021-10-08 17:08:37,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2021-10-08 17:08:37,168 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) [2021-10-08 17:08:37,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 640 transitions. [2021-10-08 17:08:37,171 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 640 transitions. Word has length 3 [2021-10-08 17:08:37,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:08:37,171 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 640 transitions. [2021-10-08 17:08:37,172 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) [2021-10-08 17:08:37,172 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 640 transitions. [2021-10-08 17:08:37,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-08 17:08:37,172 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:08:37,173 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-08 17:08:37,191 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-08 17:08:37,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:08:37,395 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:08:37,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:08:37,396 INFO L82 PathProgramCache]: Analyzing trace with hash 430423, now seen corresponding path program 1 times [2021-10-08 17:08:37,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:08:37,397 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [668765836] [2021-10-08 17:08:37,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:08:37,398 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:08:37,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:08:37,399 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:08:37,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-08 17:08:37,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:08:37,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-08 17:08:37,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:08:37,632 INFO L354 Elim1Store]: treesize reduction 141, result has 23.8 percent of original size [2021-10-08 17:08:37,632 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 [2021-10-08 17:08:37,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:08:37,745 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:08:37,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:08:37,812 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:08:37,812 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [668765836] [2021-10-08 17:08:37,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [668765836] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:08:37,812 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:08:37,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-08 17:08:37,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095256829] [2021-10-08 17:08:37,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 17:08:37,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:08:37,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 17:08:37,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:08:37,815 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) [2021-10-08 17:08:37,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:08:37,870 INFO L93 Difference]: Finished difference Result 184 states and 607 transitions. [2021-10-08 17:08:37,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 17:08:37,872 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-08 17:08:37,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:08:37,875 INFO L225 Difference]: With dead ends: 184 [2021-10-08 17:08:37,875 INFO L226 Difference]: Without dead ends: 184 [2021-10-08 17:08:37,876 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 41.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:08:37,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-10-08 17:08:37,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2021-10-08 17:08:37,890 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) [2021-10-08 17:08:37,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 607 transitions. [2021-10-08 17:08:37,893 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 607 transitions. Word has length 3 [2021-10-08 17:08:37,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:08:37,893 INFO L470 AbstractCegarLoop]: Abstraction has 184 states and 607 transitions. [2021-10-08 17:08:37,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:08:37,893 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 607 transitions. [2021-10-08 17:08:37,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-08 17:08:37,894 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:08:37,894 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-08 17:08:37,911 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-08 17:08:38,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:08:38,109 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:08:38,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:08:38,110 INFO L82 PathProgramCache]: Analyzing trace with hash 413646911, now seen corresponding path program 1 times [2021-10-08 17:08:38,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:08:38,112 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [616217922] [2021-10-08 17:08:38,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:08:38,112 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:08:38,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:08:38,114 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:08:38,116 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-08 17:08:38,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:08:38,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-08 17:08:38,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:08:38,211 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-10-08 17:08:38,212 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 [2021-10-08 17:08:38,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:08:38,261 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:08:38,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:08:38,282 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:08:38,283 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [616217922] [2021-10-08 17:08:38,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [616217922] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:08:38,283 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:08:38,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-08 17:08:38,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567805237] [2021-10-08 17:08:38,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 17:08:38,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:08:38,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 17:08:38,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 17:08:38,285 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) [2021-10-08 17:08:38,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:08:38,330 INFO L93 Difference]: Finished difference Result 172 states and 574 transitions. [2021-10-08 17:08:38,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 17:08:38,331 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 [2021-10-08 17:08:38,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:08:38,333 INFO L225 Difference]: With dead ends: 172 [2021-10-08 17:08:38,333 INFO L226 Difference]: Without dead ends: 172 [2021-10-08 17:08:38,334 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 17:08:38,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2021-10-08 17:08:38,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2021-10-08 17:08:38,346 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) [2021-10-08 17:08:38,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 574 transitions. [2021-10-08 17:08:38,348 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 574 transitions. Word has length 5 [2021-10-08 17:08:38,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:08:38,349 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 574 transitions. [2021-10-08 17:08:38,349 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) [2021-10-08 17:08:38,350 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 574 transitions. [2021-10-08 17:08:38,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-08 17:08:38,350 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:08:38,350 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-08 17:08:38,370 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-08 17:08:38,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:08:38,564 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:08:38,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:08:38,564 INFO L82 PathProgramCache]: Analyzing trace with hash 413646912, now seen corresponding path program 1 times [2021-10-08 17:08:38,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:08:38,565 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1252604508] [2021-10-08 17:08:38,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:08:38,566 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:08:38,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:08:38,567 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:08:38,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-08 17:08:38,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:08:38,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-08 17:08:38,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:08:38,803 INFO L354 Elim1Store]: treesize reduction 141, result has 23.8 percent of original size [2021-10-08 17:08:38,804 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 [2021-10-08 17:08:38,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:08:38,946 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:08:39,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:08:39,049 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:08:39,049 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1252604508] [2021-10-08 17:08:39,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1252604508] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:08:39,050 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:08:39,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-08 17:08:39,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315608808] [2021-10-08 17:08:39,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 17:08:39,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:08:39,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 17:08:39,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:08:39,052 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) [2021-10-08 17:08:39,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:08:39,084 INFO L93 Difference]: Finished difference Result 160 states and 541 transitions. [2021-10-08 17:08:39,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 17:08:39,085 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-08 17:08:39,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:08:39,088 INFO L225 Difference]: With dead ends: 160 [2021-10-08 17:08:39,088 INFO L226 Difference]: Without dead ends: 160 [2021-10-08 17:08:39,088 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:08:39,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-10-08 17:08:39,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2021-10-08 17:08:39,097 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) [2021-10-08 17:08:39,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 541 transitions. [2021-10-08 17:08:39,098 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 541 transitions. Word has length 5 [2021-10-08 17:08:39,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:08:39,099 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 541 transitions. [2021-10-08 17:08:39,099 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:08:39,099 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 541 transitions. [2021-10-08 17:08:39,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-08 17:08:39,100 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:08:39,100 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:08:39,115 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-08 17:08:39,313 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 [2021-10-08 17:08:39,314 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:08:39,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:08:39,315 INFO L82 PathProgramCache]: Analyzing trace with hash -1917265604, now seen corresponding path program 1 times [2021-10-08 17:08:39,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:08:39,316 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [71217927] [2021-10-08 17:08:39,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:08:39,316 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:08:39,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:08:39,318 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:08:39,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-08 17:08:39,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:08:39,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-08 17:08:39,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:08:39,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:08:39,504 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:08:39,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:08:39,596 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:08:39,596 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [71217927] [2021-10-08 17:08:39,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [71217927] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:08:39,597 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:08:39,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-08 17:08:39,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981607586] [2021-10-08 17:08:39,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 17:08:39,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:08:39,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 17:08:39,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 17:08:39,599 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) [2021-10-08 17:08:39,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:08:39,632 INFO L93 Difference]: Finished difference Result 133 states and 433 transitions. [2021-10-08 17:08:39,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 17:08:39,633 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-08 17:08:39,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:08:39,635 INFO L225 Difference]: With dead ends: 133 [2021-10-08 17:08:39,635 INFO L226 Difference]: Without dead ends: 133 [2021-10-08 17:08:39,636 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 17:08:39,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-10-08 17:08:39,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2021-10-08 17:08:39,642 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) [2021-10-08 17:08:39,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 433 transitions. [2021-10-08 17:08:39,644 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 433 transitions. Word has length 7 [2021-10-08 17:08:39,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:08:39,644 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 433 transitions. [2021-10-08 17:08:39,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:08:39,645 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 433 transitions. [2021-10-08 17:08:39,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-08 17:08:39,646 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:08:39,646 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:08:39,658 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-08 17:08:39,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:08:39,847 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-08 17:08:39,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:08:39,848 INFO L82 PathProgramCache]: Analyzing trace with hash -1917265602, now seen corresponding path program 1 times [2021-10-08 17:08:39,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:08:39,849 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [731698641] [2021-10-08 17:08:39,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:08:39,850 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:08:39,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:08:39,851 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:08:39,855 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-08 17:08:39,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:08:39,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-08 17:08:39,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:08:39,973 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-10-08 17:08:39,974 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 [2021-10-08 17:08:40,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:08:40,054 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:08:40,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:08:40,128 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:08:40,129 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [731698641] [2021-10-08 17:08:40,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [731698641] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:08:40,129 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:08:40,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-08 17:08:40,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126408495] [2021-10-08 17:08:40,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-08 17:08:40,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:08:40,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-08 17:08:40,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-08 17:08:40,131 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) [2021-10-08 17:08:40,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:08:40,166 INFO L93 Difference]: Finished difference Result 106 states and 325 transitions. [2021-10-08 17:08:40,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 17:08:40,167 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 [2021-10-08 17:08:40,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:08:40,169 INFO L225 Difference]: With dead ends: 106 [2021-10-08 17:08:40,169 INFO L226 Difference]: Without dead ends: 106 [2021-10-08 17:08:40,170 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 34.5ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-08 17:08:40,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-10-08 17:08:40,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2021-10-08 17:08:40,175 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) [2021-10-08 17:08:40,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 325 transitions. [2021-10-08 17:08:40,177 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 325 transitions. Word has length 7 [2021-10-08 17:08:40,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:08:40,177 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 325 transitions. [2021-10-08 17:08:40,177 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) [2021-10-08 17:08:40,177 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 325 transitions. [2021-10-08 17:08:40,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-08 17:08:40,179 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:08:40,179 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:08:40,193 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-08 17:08:40,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:08:40,393 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)] === [2021-10-08 17:08:40,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:08:40,394 INFO L82 PathProgramCache]: Analyzing trace with hash -843869938, now seen corresponding path program 1 times [2021-10-08 17:08:40,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:08:40,395 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [44332235] [2021-10-08 17:08:40,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:08:40,396 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:08:40,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:08:40,397 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:08:40,398 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-08 17:08:40,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:08:40,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-08 17:08:40,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:08:40,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:08:40,725 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:08:40,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:08:40,865 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:08:40,865 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [44332235] [2021-10-08 17:08:40,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [44332235] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:08:40,866 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:08:40,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-08 17:08:40,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363884977] [2021-10-08 17:08:40,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 17:08:40,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:08:40,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 17:08:40,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:08:40,868 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) [2021-10-08 17:08:40,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:08:40,897 INFO L93 Difference]: Finished difference Result 203 states and 630 transitions. [2021-10-08 17:08:40,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 17:08:40,898 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 [2021-10-08 17:08:40,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:08:40,901 INFO L225 Difference]: With dead ends: 203 [2021-10-08 17:08:40,901 INFO L226 Difference]: Without dead ends: 196 [2021-10-08 17:08:40,901 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:08:40,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2021-10-08 17:08:40,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2021-10-08 17:08:40,914 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) [2021-10-08 17:08:40,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 612 transitions. [2021-10-08 17:08:40,917 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 612 transitions. Word has length 19 [2021-10-08 17:08:40,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:08:40,917 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 612 transitions. [2021-10-08 17:08:40,917 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) [2021-10-08 17:08:40,918 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 612 transitions. [2021-10-08 17:08:40,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:08:40,927 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:08:40,927 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] [2021-10-08 17:08:40,952 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-08 17:08:41,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:08:41,154 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)] === [2021-10-08 17:08:41,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:08:41,155 INFO L82 PathProgramCache]: Analyzing trace with hash 1181483693, now seen corresponding path program 1 times [2021-10-08 17:08:41,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:08:41,156 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2012834381] [2021-10-08 17:08:41,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:08:41,156 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:08:41,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:08:41,159 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:08:41,166 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-08 17:08:41,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:08:41,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:08:41,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:08:41,491 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:08:41,492 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:08:41,879 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:08:41,880 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:08:41,880 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2012834381] [2021-10-08 17:08:41,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2012834381] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:08:41,881 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:08:41,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-10-08 17:08:41,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598132033] [2021-10-08 17:08:41,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 17:08:41,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:08:41,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 17:08:41,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-10-08 17:08:41,883 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) [2021-10-08 17:08:42,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:08:42,844 INFO L93 Difference]: Finished difference Result 448 states and 1331 transitions. [2021-10-08 17:08:42,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-08 17:08:42,845 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 [2021-10-08 17:08:42,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:08:42,850 INFO L225 Difference]: With dead ends: 448 [2021-10-08 17:08:42,850 INFO L226 Difference]: Without dead ends: 448 [2021-10-08 17:08:42,851 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 497.7ms TimeCoverageRelationStatistics Valid=156, Invalid=350, Unknown=0, NotChecked=0, Total=506 [2021-10-08 17:08:42,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2021-10-08 17:08:42,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 236. [2021-10-08 17:08:42,869 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) [2021-10-08 17:08:42,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 772 transitions. [2021-10-08 17:08:42,872 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 772 transitions. Word has length 20 [2021-10-08 17:08:42,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:08:42,872 INFO L470 AbstractCegarLoop]: Abstraction has 236 states and 772 transitions. [2021-10-08 17:08:42,872 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) [2021-10-08 17:08:42,873 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 772 transitions. [2021-10-08 17:08:42,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:08:42,874 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:08:42,874 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] [2021-10-08 17:08:42,891 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-08 17:08:43,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:08:43,105 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)] === [2021-10-08 17:08:43,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:08:43,106 INFO L82 PathProgramCache]: Analyzing trace with hash 413728867, now seen corresponding path program 1 times [2021-10-08 17:08:43,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:08:43,106 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [54898317] [2021-10-08 17:08:43,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:08:43,107 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:08:43,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:08:43,108 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:08:43,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-08 17:08:43,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:08:43,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:08:43,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:08:43,393 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:08:43,393 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:08:43,857 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:08:43,858 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:08:43,858 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [54898317] [2021-10-08 17:08:43,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [54898317] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-08 17:08:43,858 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 17:08:43,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2021-10-08 17:08:43,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100633961] [2021-10-08 17:08:43,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-08 17:08:43,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:08:43,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-08 17:08:43,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-10-08 17:08:43,860 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) [2021-10-08 17:08:44,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:08:44,104 INFO L93 Difference]: Finished difference Result 290 states and 900 transitions. [2021-10-08 17:08:44,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 17:08:44,105 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 [2021-10-08 17:08:44,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:08:44,108 INFO L225 Difference]: With dead ends: 290 [2021-10-08 17:08:44,108 INFO L226 Difference]: Without dead ends: 278 [2021-10-08 17:08:44,109 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 338.6ms TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2021-10-08 17:08:44,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2021-10-08 17:08:44,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 226. [2021-10-08 17:08:44,122 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) [2021-10-08 17:08:44,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 728 transitions. [2021-10-08 17:08:44,124 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 728 transitions. Word has length 20 [2021-10-08 17:08:44,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:08:44,124 INFO L470 AbstractCegarLoop]: Abstraction has 226 states and 728 transitions. [2021-10-08 17:08:44,124 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) [2021-10-08 17:08:44,125 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 728 transitions. [2021-10-08 17:08:44,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:08:44,126 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:08:44,126 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] [2021-10-08 17:08:44,141 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-08 17:08:44,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:08:44,339 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)] === [2021-10-08 17:08:44,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:08:44,340 INFO L82 PathProgramCache]: Analyzing trace with hash 1662713069, now seen corresponding path program 2 times [2021-10-08 17:08:44,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:08:44,341 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1632796067] [2021-10-08 17:08:44,341 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:08:44,341 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:08:44,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:08:44,342 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:08:44,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-08 17:08:44,504 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:08:44,504 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:08:44,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:08:44,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:08:44,709 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:08:44,710 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:08:45,271 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:08:45,272 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:08:45,272 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1632796067] [2021-10-08 17:08:45,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1632796067] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:08:45,272 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:08:45,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-10-08 17:08:45,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821653265] [2021-10-08 17:08:45,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 17:08:45,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:08:45,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 17:08:45,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-10-08 17:08:45,274 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) [2021-10-08 17:08:46,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:08:46,388 INFO L93 Difference]: Finished difference Result 390 states and 1134 transitions. [2021-10-08 17:08:46,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-08 17:08:46,389 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 [2021-10-08 17:08:46,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:08:46,393 INFO L225 Difference]: With dead ends: 390 [2021-10-08 17:08:46,393 INFO L226 Difference]: Without dead ends: 390 [2021-10-08 17:08:46,393 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 607.6ms TimeCoverageRelationStatistics Valid=126, Invalid=294, Unknown=0, NotChecked=0, Total=420 [2021-10-08 17:08:46,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2021-10-08 17:08:46,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 242. [2021-10-08 17:08:46,406 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) [2021-10-08 17:08:46,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 796 transitions. [2021-10-08 17:08:46,409 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 796 transitions. Word has length 20 [2021-10-08 17:08:46,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:08:46,409 INFO L470 AbstractCegarLoop]: Abstraction has 242 states and 796 transitions. [2021-10-08 17:08:46,409 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) [2021-10-08 17:08:46,410 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 796 transitions. [2021-10-08 17:08:46,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:08:46,411 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:08:46,411 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] [2021-10-08 17:08:46,428 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-10-08 17:08:46,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:08:46,624 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)] === [2021-10-08 17:08:46,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:08:46,625 INFO L82 PathProgramCache]: Analyzing trace with hash -568339617, now seen corresponding path program 3 times [2021-10-08 17:08:46,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:08:46,627 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1333891693] [2021-10-08 17:08:46,627 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:08:46,627 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:08:46,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:08:46,629 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:08:46,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-08 17:08:46,818 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-08 17:08:46,818 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:08:46,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-08 17:08:46,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:08:46,942 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:08:46,942 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:08:47,039 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:08:47,040 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:08:47,040 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1333891693] [2021-10-08 17:08:47,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1333891693] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:08:47,040 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:08:47,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 7 [2021-10-08 17:08:47,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900838216] [2021-10-08 17:08:47,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-08 17:08:47,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:08:47,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-08 17:08:47,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-08 17:08:47,042 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) [2021-10-08 17:08:47,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:08:47,210 INFO L93 Difference]: Finished difference Result 336 states and 1043 transitions. [2021-10-08 17:08:47,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 17:08:47,211 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 [2021-10-08 17:08:47,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:08:47,215 INFO L225 Difference]: With dead ends: 336 [2021-10-08 17:08:47,215 INFO L226 Difference]: Without dead ends: 322 [2021-10-08 17:08:47,215 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 70.8ms TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-10-08 17:08:47,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2021-10-08 17:08:47,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 258. [2021-10-08 17:08:47,227 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) [2021-10-08 17:08:47,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 833 transitions. [2021-10-08 17:08:47,228 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 833 transitions. Word has length 20 [2021-10-08 17:08:47,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:08:47,229 INFO L470 AbstractCegarLoop]: Abstraction has 258 states and 833 transitions. [2021-10-08 17:08:47,229 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) [2021-10-08 17:08:47,229 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 833 transitions. [2021-10-08 17:08:47,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:08:47,230 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:08:47,230 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] [2021-10-08 17:08:47,244 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-08 17:08:47,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:08:47,444 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)] === [2021-10-08 17:08:47,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:08:47,444 INFO L82 PathProgramCache]: Analyzing trace with hash -930482829, now seen corresponding path program 4 times [2021-10-08 17:08:47,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:08:47,445 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1292295692] [2021-10-08 17:08:47,445 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 17:08:47,446 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:08:47,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:08:47,447 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:08:47,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-08 17:08:47,570 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 17:08:47,571 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:08:47,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:08:47,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:08:47,787 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:08:47,787 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:08:48,343 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:08:48,343 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:08:48,344 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1292295692] [2021-10-08 17:08:48,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1292295692] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:08:48,344 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:08:48,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-10-08 17:08:48,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468686289] [2021-10-08 17:08:48,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 17:08:48,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:08:48,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 17:08:48,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2021-10-08 17:08:48,348 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) [2021-10-08 17:08:49,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:08:49,299 INFO L93 Difference]: Finished difference Result 388 states and 1150 transitions. [2021-10-08 17:08:49,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-08 17:08:49,304 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 [2021-10-08 17:08:49,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:08:49,311 INFO L225 Difference]: With dead ends: 388 [2021-10-08 17:08:49,311 INFO L226 Difference]: Without dead ends: 388 [2021-10-08 17:08:49,311 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 632.3ms TimeCoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2021-10-08 17:08:49,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2021-10-08 17:08:49,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 250. [2021-10-08 17:08:49,325 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) [2021-10-08 17:08:49,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 803 transitions. [2021-10-08 17:08:49,327 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 803 transitions. Word has length 20 [2021-10-08 17:08:49,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:08:49,327 INFO L470 AbstractCegarLoop]: Abstraction has 250 states and 803 transitions. [2021-10-08 17:08:49,328 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) [2021-10-08 17:08:49,328 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 803 transitions. [2021-10-08 17:08:49,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:08:49,329 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:08:49,329 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] [2021-10-08 17:08:49,342 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-08 17:08:49,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:08:49,543 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)] === [2021-10-08 17:08:49,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:08:49,544 INFO L82 PathProgramCache]: Analyzing trace with hash -47017307, now seen corresponding path program 5 times [2021-10-08 17:08:49,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:08:49,544 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [174686635] [2021-10-08 17:08:49,545 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 17:08:49,545 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:08:49,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:08:49,547 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:08:49,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-08 17:08:49,702 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:08:49,702 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:08:49,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:08:49,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:08:49,939 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:08:49,939 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:08:50,282 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:08:50,283 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:08:50,283 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [174686635] [2021-10-08 17:08:50,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [174686635] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:08:50,283 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:08:50,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-10-08 17:08:50,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197909469] [2021-10-08 17:08:50,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 17:08:50,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:08:50,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 17:08:50,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2021-10-08 17:08:50,285 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) [2021-10-08 17:08:51,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:08:51,633 INFO L93 Difference]: Finished difference Result 880 states and 2645 transitions. [2021-10-08 17:08:51,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-08 17:08:51,634 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 [2021-10-08 17:08:51,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:08:51,643 INFO L225 Difference]: With dead ends: 880 [2021-10-08 17:08:51,643 INFO L226 Difference]: Without dead ends: 880 [2021-10-08 17:08:51,644 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 677.6ms TimeCoverageRelationStatistics Valid=191, Invalid=409, Unknown=0, NotChecked=0, Total=600 [2021-10-08 17:08:51,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 880 states. [2021-10-08 17:08:51,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 880 to 270. [2021-10-08 17:08:51,664 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) [2021-10-08 17:08:51,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 894 transitions. [2021-10-08 17:08:51,665 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 894 transitions. Word has length 20 [2021-10-08 17:08:51,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:08:51,666 INFO L470 AbstractCegarLoop]: Abstraction has 270 states and 894 transitions. [2021-10-08 17:08:51,666 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) [2021-10-08 17:08:51,666 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 894 transitions. [2021-10-08 17:08:51,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:08:51,668 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:08:51,668 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] [2021-10-08 17:08:51,681 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-08 17:08:51,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:08:51,881 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)] === [2021-10-08 17:08:51,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:08:51,884 INFO L82 PathProgramCache]: Analyzing trace with hash 2090770861, now seen corresponding path program 6 times [2021-10-08 17:08:51,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:08:51,885 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1379797817] [2021-10-08 17:08:51,885 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 17:08:51,885 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:08:51,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:08:51,886 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:08:51,894 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-08 17:08:52,119 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-08 17:08:52,120 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:08:52,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:08:52,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:08:52,449 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:08:52,449 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:08:52,802 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:08:52,802 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:08:52,803 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1379797817] [2021-10-08 17:08:52,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1379797817] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:08:52,803 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:08:52,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-10-08 17:08:52,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690324026] [2021-10-08 17:08:52,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 17:08:52,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:08:52,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 17:08:52,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2021-10-08 17:08:52,805 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) [2021-10-08 17:08:54,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:08:54,316 INFO L93 Difference]: Finished difference Result 890 states and 2621 transitions. [2021-10-08 17:08:54,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-08 17:08:54,317 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 [2021-10-08 17:08:54,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:08:54,324 INFO L225 Difference]: With dead ends: 890 [2021-10-08 17:08:54,324 INFO L226 Difference]: Without dead ends: 890 [2021-10-08 17:08:54,325 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 774.5ms TimeCoverageRelationStatistics Valid=262, Invalid=550, Unknown=0, NotChecked=0, Total=812 [2021-10-08 17:08:54,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2021-10-08 17:08:54,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 278. [2021-10-08 17:08:54,346 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) [2021-10-08 17:08:54,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 942 transitions. [2021-10-08 17:08:54,348 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 942 transitions. Word has length 20 [2021-10-08 17:08:54,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:08:54,348 INFO L470 AbstractCegarLoop]: Abstraction has 278 states and 942 transitions. [2021-10-08 17:08:54,349 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) [2021-10-08 17:08:54,349 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 942 transitions. [2021-10-08 17:08:54,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:08:54,350 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:08:54,350 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] [2021-10-08 17:08:54,363 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-08 17:08:54,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:08:54,563 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)] === [2021-10-08 17:08:54,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:08:54,564 INFO L82 PathProgramCache]: Analyzing trace with hash 2105042365, now seen corresponding path program 7 times [2021-10-08 17:08:54,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:08:54,565 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [786059156] [2021-10-08 17:08:54,566 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 17:08:54,566 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:08:54,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:08:54,568 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:08:54,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-08 17:08:54,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:08:54,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:08:54,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:08:55,029 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:08:55,030 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:08:55,313 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:08:55,314 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:08:55,314 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [786059156] [2021-10-08 17:08:55,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [786059156] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:08:55,314 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:08:55,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-10-08 17:08:55,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989435467] [2021-10-08 17:08:55,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 17:08:55,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:08:55,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 17:08:55,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2021-10-08 17:08:55,316 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) [2021-10-08 17:08:56,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:08:56,953 INFO L93 Difference]: Finished difference Result 798 states and 2437 transitions. [2021-10-08 17:08:56,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-08 17:08:56,959 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 [2021-10-08 17:08:56,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:08:56,968 INFO L225 Difference]: With dead ends: 798 [2021-10-08 17:08:56,968 INFO L226 Difference]: Without dead ends: 798 [2021-10-08 17:08:56,969 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 950.2ms TimeCoverageRelationStatistics Valid=256, Invalid=500, Unknown=0, NotChecked=0, Total=756 [2021-10-08 17:08:56,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 798 states. [2021-10-08 17:08:56,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 798 to 280. [2021-10-08 17:08:56,992 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) [2021-10-08 17:08:56,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 949 transitions. [2021-10-08 17:08:56,994 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 949 transitions. Word has length 20 [2021-10-08 17:08:56,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:08:56,995 INFO L470 AbstractCegarLoop]: Abstraction has 280 states and 949 transitions. [2021-10-08 17:08:56,995 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) [2021-10-08 17:08:56,995 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 949 transitions. [2021-10-08 17:08:56,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:08:56,997 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:08:56,997 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] [2021-10-08 17:08:57,013 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-08 17:08:57,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:08:57,211 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)] === [2021-10-08 17:08:57,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:08:57,212 INFO L82 PathProgramCache]: Analyzing trace with hash -1006453781, now seen corresponding path program 2 times [2021-10-08 17:08:57,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:08:57,212 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [719664484] [2021-10-08 17:08:57,213 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:08:57,213 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:08:57,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:08:57,214 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:08:57,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-08 17:08:57,430 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:08:57,430 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:08:57,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:08:57,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:08:57,591 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:08:57,591 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:08:58,145 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:08:58,146 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:08:58,146 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [719664484] [2021-10-08 17:08:58,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [719664484] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-08 17:08:58,146 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 17:08:58,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2021-10-08 17:08:58,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787031363] [2021-10-08 17:08:58,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-08 17:08:58,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:08:58,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-08 17:08:58,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-10-08 17:08:58,148 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) [2021-10-08 17:08:58,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:08:58,403 INFO L93 Difference]: Finished difference Result 434 states and 1355 transitions. [2021-10-08 17:08:58,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 17:08:58,404 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 [2021-10-08 17:08:58,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:08:58,409 INFO L225 Difference]: With dead ends: 434 [2021-10-08 17:08:58,409 INFO L226 Difference]: Without dead ends: 422 [2021-10-08 17:08:58,410 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 317.0ms TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2021-10-08 17:08:58,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2021-10-08 17:08:58,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 300. [2021-10-08 17:08:58,424 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) [2021-10-08 17:08:58,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 1012 transitions. [2021-10-08 17:08:58,427 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 1012 transitions. Word has length 20 [2021-10-08 17:08:58,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:08:58,427 INFO L470 AbstractCegarLoop]: Abstraction has 300 states and 1012 transitions. [2021-10-08 17:08:58,427 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) [2021-10-08 17:08:58,427 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 1012 transitions. [2021-10-08 17:08:58,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:08:58,429 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:08:58,429 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] [2021-10-08 17:08:58,445 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-08 17:08:58,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:08:58,643 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)] === [2021-10-08 17:08:58,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:08:58,644 INFO L82 PathProgramCache]: Analyzing trace with hash -502422151, now seen corresponding path program 3 times [2021-10-08 17:08:58,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:08:58,645 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1736267544] [2021-10-08 17:08:58,645 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:08:58,645 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:08:58,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:08:58,646 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:08:58,648 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-08 17:08:58,914 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-08 17:08:58,914 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:08:58,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:08:58,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:08:59,065 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:08:59,065 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:09:00,249 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:09:00,250 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:09:00,250 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1736267544] [2021-10-08 17:09:00,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1736267544] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-08 17:09:00,250 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 17:09:00,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2021-10-08 17:09:00,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427081679] [2021-10-08 17:09:00,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-08 17:09:00,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:09:00,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-08 17:09:00,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-10-08 17:09:00,252 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) [2021-10-08 17:09:00,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:09:00,432 INFO L93 Difference]: Finished difference Result 440 states and 1374 transitions. [2021-10-08 17:09:00,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 17:09:00,433 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 [2021-10-08 17:09:00,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:09:00,439 INFO L225 Difference]: With dead ends: 440 [2021-10-08 17:09:00,440 INFO L226 Difference]: Without dead ends: 440 [2021-10-08 17:09:00,440 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 859.4ms TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2021-10-08 17:09:00,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2021-10-08 17:09:00,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 300. [2021-10-08 17:09:00,456 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) [2021-10-08 17:09:00,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 1012 transitions. [2021-10-08 17:09:00,458 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 1012 transitions. Word has length 20 [2021-10-08 17:09:00,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:09:00,459 INFO L470 AbstractCegarLoop]: Abstraction has 300 states and 1012 transitions. [2021-10-08 17:09:00,459 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) [2021-10-08 17:09:00,459 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 1012 transitions. [2021-10-08 17:09:00,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:09:00,462 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:09:00,462 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] [2021-10-08 17:09:00,480 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-08 17:09:00,677 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:09:00,678 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)] === [2021-10-08 17:09:00,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:09:00,679 INFO L82 PathProgramCache]: Analyzing trace with hash -877790757, now seen corresponding path program 4 times [2021-10-08 17:09:00,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:09:00,679 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [463693968] [2021-10-08 17:09:00,680 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 17:09:00,680 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:09:00,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:09:00,681 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:09:00,683 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-08 17:09:00,863 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 17:09:00,864 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:09:00,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:09:00,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:09:01,019 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:09:01,020 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:09:01,534 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:09:01,535 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:09:01,535 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [463693968] [2021-10-08 17:09:01,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [463693968] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-08 17:09:01,535 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 17:09:01,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2021-10-08 17:09:01,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802650707] [2021-10-08 17:09:01,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-08 17:09:01,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:09:01,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-08 17:09:01,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-10-08 17:09:01,538 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) [2021-10-08 17:09:01,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:09:01,824 INFO L93 Difference]: Finished difference Result 420 states and 1314 transitions. [2021-10-08 17:09:01,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 17:09:01,824 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 [2021-10-08 17:09:01,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:09:01,828 INFO L225 Difference]: With dead ends: 420 [2021-10-08 17:09:01,829 INFO L226 Difference]: Without dead ends: 408 [2021-10-08 17:09:01,829 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 332.0ms TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2021-10-08 17:09:01,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2021-10-08 17:09:01,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 306. [2021-10-08 17:09:01,844 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) [2021-10-08 17:09:01,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 1033 transitions. [2021-10-08 17:09:01,846 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 1033 transitions. Word has length 20 [2021-10-08 17:09:01,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:09:01,846 INFO L470 AbstractCegarLoop]: Abstraction has 306 states and 1033 transitions. [2021-10-08 17:09:01,846 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) [2021-10-08 17:09:01,846 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 1033 transitions. [2021-10-08 17:09:01,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:09:01,848 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:09:01,848 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] [2021-10-08 17:09:01,864 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-08 17:09:02,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:09:02,062 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)] === [2021-10-08 17:09:02,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:09:02,063 INFO L82 PathProgramCache]: Analyzing trace with hash 1224305323, now seen corresponding path program 1 times [2021-10-08 17:09:02,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:09:02,064 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [79804596] [2021-10-08 17:09:02,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:09:02,064 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:09:02,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:09:02,067 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:09:02,070 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-08 17:09:02,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:09:02,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:09:02,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:09:02,481 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:09:02,481 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:09:02,716 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:09:02,717 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:09:02,717 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [79804596] [2021-10-08 17:09:02,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [79804596] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:09:02,717 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:09:02,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2021-10-08 17:09:02,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875757282] [2021-10-08 17:09:02,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 17:09:02,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:09:02,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 17:09:02,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-10-08 17:09:02,719 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) [2021-10-08 17:09:04,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:09:04,943 INFO L93 Difference]: Finished difference Result 756 states and 2300 transitions. [2021-10-08 17:09:04,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-08 17:09:04,944 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 [2021-10-08 17:09:04,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:09:04,951 INFO L225 Difference]: With dead ends: 756 [2021-10-08 17:09:04,951 INFO L226 Difference]: Without dead ends: 756 [2021-10-08 17:09:04,952 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 964.3ms TimeCoverageRelationStatistics Valid=227, Invalid=703, Unknown=0, NotChecked=0, Total=930 [2021-10-08 17:09:04,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2021-10-08 17:09:04,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 318. [2021-10-08 17:09:04,974 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) [2021-10-08 17:09:04,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 1063 transitions. [2021-10-08 17:09:04,976 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 1063 transitions. Word has length 20 [2021-10-08 17:09:04,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:09:04,976 INFO L470 AbstractCegarLoop]: Abstraction has 318 states and 1063 transitions. [2021-10-08 17:09:04,976 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) [2021-10-08 17:09:04,976 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 1063 transitions. [2021-10-08 17:09:04,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:09:04,978 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:09:04,978 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] [2021-10-08 17:09:04,989 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-10-08 17:09:05,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:09:05,185 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)] === [2021-10-08 17:09:05,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:09:05,185 INFO L82 PathProgramCache]: Analyzing trace with hash 1464852971, now seen corresponding path program 2 times [2021-10-08 17:09:05,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:09:05,186 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [500313909] [2021-10-08 17:09:05,186 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:09:05,187 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:09:05,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:09:05,189 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:09:05,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-08 17:09:05,450 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:09:05,451 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:09:05,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:09:05,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:09:05,603 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:09:05,604 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:09:05,878 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:09:05,878 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:09:05,878 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [500313909] [2021-10-08 17:09:05,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [500313909] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-08 17:09:05,879 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 17:09:05,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-10-08 17:09:05,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594677329] [2021-10-08 17:09:05,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-08 17:09:05,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:09:05,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-08 17:09:05,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-10-08 17:09:05,881 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) [2021-10-08 17:09:06,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:09:06,230 INFO L93 Difference]: Finished difference Result 410 states and 1316 transitions. [2021-10-08 17:09:06,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-08 17:09:06,230 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 [2021-10-08 17:09:06,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:09:06,234 INFO L225 Difference]: With dead ends: 410 [2021-10-08 17:09:06,234 INFO L226 Difference]: Without dead ends: 408 [2021-10-08 17:09:06,234 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 304.2ms TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2021-10-08 17:09:06,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2021-10-08 17:09:06,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 320. [2021-10-08 17:09:06,248 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) [2021-10-08 17:09:06,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 1068 transitions. [2021-10-08 17:09:06,250 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 1068 transitions. Word has length 20 [2021-10-08 17:09:06,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:09:06,250 INFO L470 AbstractCegarLoop]: Abstraction has 320 states and 1068 transitions. [2021-10-08 17:09:06,250 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) [2021-10-08 17:09:06,250 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 1068 transitions. [2021-10-08 17:09:06,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:09:06,252 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:09:06,252 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] [2021-10-08 17:09:06,268 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-10-08 17:09:06,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:09:06,465 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)] === [2021-10-08 17:09:06,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:09:06,466 INFO L82 PathProgramCache]: Analyzing trace with hash -835237757, now seen corresponding path program 3 times [2021-10-08 17:09:06,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:09:06,467 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1890481479] [2021-10-08 17:09:06,467 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:09:06,468 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:09:06,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:09:06,469 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:09:06,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-10-08 17:09:06,793 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-08 17:09:06,793 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:09:06,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:09:06,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:09:07,011 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:09:07,012 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:09:07,347 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:09:07,347 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:09:07,347 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1890481479] [2021-10-08 17:09:07,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1890481479] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:09:07,348 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:09:07,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2021-10-08 17:09:07,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268926817] [2021-10-08 17:09:07,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 17:09:07,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:09:07,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 17:09:07,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-10-08 17:09:07,351 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) [2021-10-08 17:09:09,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:09:09,742 INFO L93 Difference]: Finished difference Result 756 states and 2306 transitions. [2021-10-08 17:09:09,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-08 17:09:09,743 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 [2021-10-08 17:09:09,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:09:09,748 INFO L225 Difference]: With dead ends: 756 [2021-10-08 17:09:09,749 INFO L226 Difference]: Without dead ends: 756 [2021-10-08 17:09:09,750 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 1379.5ms TimeCoverageRelationStatistics Valid=226, Invalid=644, Unknown=0, NotChecked=0, Total=870 [2021-10-08 17:09:09,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2021-10-08 17:09:09,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 330. [2021-10-08 17:09:09,768 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) [2021-10-08 17:09:09,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 1109 transitions. [2021-10-08 17:09:09,770 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 1109 transitions. Word has length 20 [2021-10-08 17:09:09,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:09:09,771 INFO L470 AbstractCegarLoop]: Abstraction has 330 states and 1109 transitions. [2021-10-08 17:09:09,771 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) [2021-10-08 17:09:09,771 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 1109 transitions. [2021-10-08 17:09:09,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:09:09,772 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:09:09,773 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] [2021-10-08 17:09:09,786 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-10-08 17:09:09,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:09:09,986 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)] === [2021-10-08 17:09:09,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:09:09,987 INFO L82 PathProgramCache]: Analyzing trace with hash 238046889, now seen corresponding path program 4 times [2021-10-08 17:09:09,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:09:09,988 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1702263142] [2021-10-08 17:09:09,988 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 17:09:09,988 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:09:09,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:09:09,990 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:09:09,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-08 17:09:10,210 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 17:09:10,210 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:09:10,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:09:10,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:09:10,392 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:09:10,392 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:09:10,987 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:09:10,988 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:09:10,988 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1702263142] [2021-10-08 17:09:10,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1702263142] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:09:10,988 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:09:10,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2021-10-08 17:09:10,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944826865] [2021-10-08 17:09:10,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 17:09:10,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:09:10,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 17:09:10,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-10-08 17:09:10,991 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) [2021-10-08 17:09:15,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:09:15,379 INFO L93 Difference]: Finished difference Result 704 states and 2148 transitions. [2021-10-08 17:09:15,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-08 17:09:15,382 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 [2021-10-08 17:09:15,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:09:15,388 INFO L225 Difference]: With dead ends: 704 [2021-10-08 17:09:15,388 INFO L226 Difference]: Without dead ends: 704 [2021-10-08 17:09:15,389 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 2007.6ms TimeCoverageRelationStatistics Valid=156, Invalid=350, Unknown=0, NotChecked=0, Total=506 [2021-10-08 17:09:15,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2021-10-08 17:09:15,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 356. [2021-10-08 17:09:15,406 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) [2021-10-08 17:09:15,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 1234 transitions. [2021-10-08 17:09:15,408 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 1234 transitions. Word has length 20 [2021-10-08 17:09:15,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:09:15,409 INFO L470 AbstractCegarLoop]: Abstraction has 356 states and 1234 transitions. [2021-10-08 17:09:15,409 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) [2021-10-08 17:09:15,409 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 1234 transitions. [2021-10-08 17:09:15,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:09:15,411 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:09:15,411 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] [2021-10-08 17:09:15,424 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-10-08 17:09:15,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:09:15,624 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)] === [2021-10-08 17:09:15,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:09:15,625 INFO L82 PathProgramCache]: Analyzing trace with hash -277635321, now seen corresponding path program 5 times [2021-10-08 17:09:15,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:09:15,625 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2250010] [2021-10-08 17:09:15,625 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 17:09:15,625 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:09:15,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:09:15,627 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:09:15,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-10-08 17:09:15,889 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:09:15,889 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:09:15,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:09:15,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:09:16,109 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:09:16,109 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:09:16,965 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:09:16,966 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:09:16,966 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2250010] [2021-10-08 17:09:16,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2250010] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:09:16,966 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:09:16,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2021-10-08 17:09:16,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261658598] [2021-10-08 17:09:16,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 17:09:16,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:09:16,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 17:09:16,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2021-10-08 17:09:16,969 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) [2021-10-08 17:09:19,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:09:19,986 INFO L93 Difference]: Finished difference Result 660 states and 2060 transitions. [2021-10-08 17:09:19,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-08 17:09:19,988 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 [2021-10-08 17:09:19,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:09:19,992 INFO L225 Difference]: With dead ends: 660 [2021-10-08 17:09:19,992 INFO L226 Difference]: Without dead ends: 660 [2021-10-08 17:09:19,992 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 2162.8ms TimeCoverageRelationStatistics Valid=161, Invalid=345, Unknown=0, NotChecked=0, Total=506 [2021-10-08 17:09:19,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2021-10-08 17:09:20,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 354. [2021-10-08 17:09:20,009 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) [2021-10-08 17:09:20,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 1222 transitions. [2021-10-08 17:09:20,011 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 1222 transitions. Word has length 20 [2021-10-08 17:09:20,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:09:20,012 INFO L470 AbstractCegarLoop]: Abstraction has 354 states and 1222 transitions. [2021-10-08 17:09:20,012 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) [2021-10-08 17:09:20,012 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 1222 transitions. [2021-10-08 17:09:20,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:09:20,014 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:09:20,014 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] [2021-10-08 17:09:20,028 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-10-08 17:09:20,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:09:20,228 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)] === [2021-10-08 17:09:20,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:09:20,229 INFO L82 PathProgramCache]: Analyzing trace with hash 1696368881, now seen corresponding path program 8 times [2021-10-08 17:09:20,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:09:20,229 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1264142665] [2021-10-08 17:09:20,229 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:09:20,230 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:09:20,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:09:20,231 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:09:20,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-10-08 17:09:20,496 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:09:20,497 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:09:20,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:09:20,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:09:20,689 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:09:20,689 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:09:21,178 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:09:21,179 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:09:21,179 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1264142665] [2021-10-08 17:09:21,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1264142665] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:09:21,179 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:09:21,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-10-08 17:09:21,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098439205] [2021-10-08 17:09:21,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 17:09:21,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:09:21,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 17:09:21,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2021-10-08 17:09:21,182 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) [2021-10-08 17:09:25,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:09:25,536 INFO L93 Difference]: Finished difference Result 958 states and 2883 transitions. [2021-10-08 17:09:25,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-08 17:09:25,543 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 [2021-10-08 17:09:25,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:09:25,557 INFO L225 Difference]: With dead ends: 958 [2021-10-08 17:09:25,557 INFO L226 Difference]: Without dead ends: 954 [2021-10-08 17:09:25,558 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 1111.1ms TimeCoverageRelationStatistics Valid=156, Invalid=396, Unknown=0, NotChecked=0, Total=552 [2021-10-08 17:09:25,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 954 states. [2021-10-08 17:09:25,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 954 to 380. [2021-10-08 17:09:25,619 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) [2021-10-08 17:09:25,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 1373 transitions. [2021-10-08 17:09:25,622 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 1373 transitions. Word has length 20 [2021-10-08 17:09:25,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:09:25,624 INFO L470 AbstractCegarLoop]: Abstraction has 380 states and 1373 transitions. [2021-10-08 17:09:25,624 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) [2021-10-08 17:09:25,625 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 1373 transitions. [2021-10-08 17:09:25,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:09:25,626 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:09:25,626 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] [2021-10-08 17:09:25,642 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-10-08 17:09:25,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:09:25,840 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)] === [2021-10-08 17:09:25,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:09:25,840 INFO L82 PathProgramCache]: Analyzing trace with hash 1983399665, now seen corresponding path program 9 times [2021-10-08 17:09:25,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:09:25,841 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1219206803] [2021-10-08 17:09:25,841 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:09:25,842 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:09:25,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:09:25,843 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:09:25,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-10-08 17:09:26,151 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-08 17:09:26,152 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:09:26,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:09:26,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:09:26,401 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:09:26,401 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:09:26,866 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:09:26,867 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:09:26,867 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1219206803] [2021-10-08 17:09:26,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1219206803] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:09:26,867 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:09:26,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-10-08 17:09:26,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277555084] [2021-10-08 17:09:26,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 17:09:26,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:09:26,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 17:09:26,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-10-08 17:09:26,869 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) [2021-10-08 17:09:33,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:09:33,350 INFO L93 Difference]: Finished difference Result 914 states and 2808 transitions. [2021-10-08 17:09:33,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-08 17:09:33,350 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 [2021-10-08 17:09:33,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:09:33,357 INFO L225 Difference]: With dead ends: 914 [2021-10-08 17:09:33,358 INFO L226 Difference]: Without dead ends: 914 [2021-10-08 17:09:33,358 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 1126.4ms TimeCoverageRelationStatistics Valid=192, Invalid=408, Unknown=0, NotChecked=0, Total=600 [2021-10-08 17:09:33,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 914 states. [2021-10-08 17:09:33,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 914 to 380. [2021-10-08 17:09:33,378 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) [2021-10-08 17:09:33,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 1369 transitions. [2021-10-08 17:09:33,380 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 1369 transitions. Word has length 20 [2021-10-08 17:09:33,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:09:33,381 INFO L470 AbstractCegarLoop]: Abstraction has 380 states and 1369 transitions. [2021-10-08 17:09:33,381 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) [2021-10-08 17:09:33,381 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 1369 transitions. [2021-10-08 17:09:33,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:09:33,383 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:09:33,383 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] [2021-10-08 17:09:33,396 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Ended with exit code 0 [2021-10-08 17:09:33,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:09:33,597 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)] === [2021-10-08 17:09:33,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:09:33,598 INFO L82 PathProgramCache]: Analyzing trace with hash 1691117329, now seen corresponding path program 10 times [2021-10-08 17:09:33,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:09:33,598 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [962087605] [2021-10-08 17:09:33,598 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 17:09:33,599 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:09:33,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:09:33,600 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:09:33,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-10-08 17:09:33,850 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 17:09:33,850 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:09:33,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:09:33,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:09:34,061 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:09:34,062 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:09:34,736 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:09:34,736 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:09:34,736 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [962087605] [2021-10-08 17:09:34,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [962087605] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:09:34,737 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:09:34,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-10-08 17:09:34,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95408973] [2021-10-08 17:09:34,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 17:09:34,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:09:34,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 17:09:34,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-10-08 17:09:34,739 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) [2021-10-08 17:09:37,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:09:37,358 INFO L93 Difference]: Finished difference Result 776 states and 2419 transitions. [2021-10-08 17:09:37,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-08 17:09:37,361 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 [2021-10-08 17:09:37,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:09:37,368 INFO L225 Difference]: With dead ends: 776 [2021-10-08 17:09:37,368 INFO L226 Difference]: Without dead ends: 772 [2021-10-08 17:09:37,369 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 1220.7ms TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2021-10-08 17:09:37,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2021-10-08 17:09:37,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 398. [2021-10-08 17:09:37,388 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) [2021-10-08 17:09:37,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 1450 transitions. [2021-10-08 17:09:37,391 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 1450 transitions. Word has length 20 [2021-10-08 17:09:37,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:09:37,391 INFO L470 AbstractCegarLoop]: Abstraction has 398 states and 1450 transitions. [2021-10-08 17:09:37,391 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) [2021-10-08 17:09:37,391 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 1450 transitions. [2021-10-08 17:09:37,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:09:37,393 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:09:37,393 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] [2021-10-08 17:09:37,407 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Ended with exit code 0 [2021-10-08 17:09:37,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:09:37,608 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)] === [2021-10-08 17:09:37,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:09:37,608 INFO L82 PathProgramCache]: Analyzing trace with hash -2100823819, now seen corresponding path program 5 times [2021-10-08 17:09:37,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:09:37,609 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [524831815] [2021-10-08 17:09:37,609 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 17:09:37,610 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:09:37,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:09:37,611 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:09:37,614 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-10-08 17:09:37,876 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:09:37,877 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:09:37,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:09:37,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:09:38,101 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:09:38,102 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:09:41,124 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:09:41,125 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:09:41,125 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [524831815] [2021-10-08 17:09:41,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [524831815] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:09:41,125 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:09:41,126 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-10-08 17:09:41,126 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370053548] [2021-10-08 17:09:41,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 17:09:41,126 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:09:41,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 17:09:41,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=137, Unknown=1, NotChecked=0, Total=182 [2021-10-08 17:09:41,127 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) [2021-10-08 17:09:53,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:09:53,359 INFO L93 Difference]: Finished difference Result 1048 states and 3153 transitions. [2021-10-08 17:09:53,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-08 17:09:53,362 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 [2021-10-08 17:09:53,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:09:53,371 INFO L225 Difference]: With dead ends: 1048 [2021-10-08 17:09:53,371 INFO L226 Difference]: Without dead ends: 1048 [2021-10-08 17:09:53,372 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 5501.0ms TimeCoverageRelationStatistics Valid=296, Invalid=825, Unknown=1, NotChecked=0, Total=1122 [2021-10-08 17:09:53,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1048 states. [2021-10-08 17:09:53,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1048 to 436. [2021-10-08 17:09:53,396 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) [2021-10-08 17:09:53,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 1622 transitions. [2021-10-08 17:09:53,399 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 1622 transitions. Word has length 20 [2021-10-08 17:09:53,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:09:53,399 INFO L470 AbstractCegarLoop]: Abstraction has 436 states and 1622 transitions. [2021-10-08 17:09:53,399 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) [2021-10-08 17:09:53,399 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 1622 transitions. [2021-10-08 17:09:53,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:09:53,401 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:09:53,401 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] [2021-10-08 17:09:53,413 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Ended with exit code 0 [2021-10-08 17:09:53,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:09:53,612 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)] === [2021-10-08 17:09:53,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:09:53,612 INFO L82 PathProgramCache]: Analyzing trace with hash -1912160851, now seen corresponding path program 11 times [2021-10-08 17:09:53,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:09:53,613 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [311487464] [2021-10-08 17:09:53,613 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 17:09:53,614 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:09:53,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:09:53,615 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:09:53,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-10-08 17:09:53,885 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:09:53,885 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:09:53,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:09:53,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:09:54,054 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:09:54,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:09:54,861 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:09:54,861 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:09:54,862 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [311487464] [2021-10-08 17:09:54,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [311487464] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-08 17:09:54,862 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 17:09:54,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 12 [2021-10-08 17:09:54,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231411438] [2021-10-08 17:09:54,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-08 17:09:54,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:09:54,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-08 17:09:54,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-10-08 17:09:54,863 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) [2021-10-08 17:09:55,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:09:55,141 INFO L93 Difference]: Finished difference Result 568 states and 2000 transitions. [2021-10-08 17:09:55,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 17:09:55,142 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 [2021-10-08 17:09:55,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:09:55,146 INFO L225 Difference]: With dead ends: 568 [2021-10-08 17:09:55,146 INFO L226 Difference]: Without dead ends: 562 [2021-10-08 17:09:55,146 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 513.9ms TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2021-10-08 17:09:55,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2021-10-08 17:09:55,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 436. [2021-10-08 17:09:55,158 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) [2021-10-08 17:09:55,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 1618 transitions. [2021-10-08 17:09:55,161 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 1618 transitions. Word has length 20 [2021-10-08 17:09:55,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:09:55,161 INFO L470 AbstractCegarLoop]: Abstraction has 436 states and 1618 transitions. [2021-10-08 17:09:55,161 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) [2021-10-08 17:09:55,161 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 1618 transitions. [2021-10-08 17:09:55,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:09:55,163 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:09:55,163 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] [2021-10-08 17:09:55,182 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-10-08 17:09:55,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:09:55,377 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)] === [2021-10-08 17:09:55,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:09:55,378 INFO L82 PathProgramCache]: Analyzing trace with hash 53224269, now seen corresponding path program 6 times [2021-10-08 17:09:55,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:09:55,379 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [527886405] [2021-10-08 17:09:55,379 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 17:09:55,379 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:09:55,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:09:55,381 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:09:55,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-10-08 17:09:55,713 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-08 17:09:55,713 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:09:55,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:09:55,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:09:55,964 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:09:55,964 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:09:59,170 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:09:59,170 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:09:59,171 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [527886405] [2021-10-08 17:09:59,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [527886405] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:09:59,171 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:09:59,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-10-08 17:09:59,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982972408] [2021-10-08 17:09:59,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 17:09:59,171 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:09:59,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 17:09:59,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=134, Unknown=1, NotChecked=0, Total=182 [2021-10-08 17:09:59,172 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) [2021-10-08 17:10:19,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:10:19,468 INFO L93 Difference]: Finished difference Result 1168 states and 3558 transitions. [2021-10-08 17:10:19,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-08 17:10:19,471 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 [2021-10-08 17:10:19,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:10:19,497 INFO L225 Difference]: With dead ends: 1168 [2021-10-08 17:10:19,497 INFO L226 Difference]: Without dead ends: 1168 [2021-10-08 17:10:19,499 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 8495.0ms TimeCoverageRelationStatistics Valid=259, Invalid=670, Unknown=1, NotChecked=0, Total=930 [2021-10-08 17:10:19,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2021-10-08 17:10:19,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 444. [2021-10-08 17:10:19,526 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) [2021-10-08 17:10:19,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 1677 transitions. [2021-10-08 17:10:19,528 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 1677 transitions. Word has length 20 [2021-10-08 17:10:19,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:10:19,529 INFO L470 AbstractCegarLoop]: Abstraction has 444 states and 1677 transitions. [2021-10-08 17:10:19,529 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) [2021-10-08 17:10:19,529 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 1677 transitions. [2021-10-08 17:10:19,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:10:19,531 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:10:19,532 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] [2021-10-08 17:10:19,548 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-10-08 17:10:19,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:10:19,744 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)] === [2021-10-08 17:10:19,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:10:19,745 INFO L82 PathProgramCache]: Analyzing trace with hash -1781517933, now seen corresponding path program 6 times [2021-10-08 17:10:19,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:10:19,746 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [886820173] [2021-10-08 17:10:19,746 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 17:10:19,746 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:10:19,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:10:19,747 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:10:19,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-10-08 17:10:20,192 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-08 17:10:20,193 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:10:20,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:10:20,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:10:20,447 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:10:20,447 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:10:21,168 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:10:21,168 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:10:21,168 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [886820173] [2021-10-08 17:10:21,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [886820173] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-08 17:10:21,169 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 17:10:21,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-10-08 17:10:21,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852758797] [2021-10-08 17:10:21,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-08 17:10:21,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:10:21,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-08 17:10:21,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-10-08 17:10:21,170 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) [2021-10-08 17:10:21,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:10:21,549 INFO L93 Difference]: Finished difference Result 576 states and 2066 transitions. [2021-10-08 17:10:21,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-08 17:10:21,550 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 [2021-10-08 17:10:21,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:10:21,554 INFO L225 Difference]: With dead ends: 576 [2021-10-08 17:10:21,554 INFO L226 Difference]: Without dead ends: 574 [2021-10-08 17:10:21,555 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 699.7ms TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2021-10-08 17:10:21,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2021-10-08 17:10:21,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 446. [2021-10-08 17:10:21,569 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) [2021-10-08 17:10:21,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 1682 transitions. [2021-10-08 17:10:21,571 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 1682 transitions. Word has length 20 [2021-10-08 17:10:21,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:10:21,571 INFO L470 AbstractCegarLoop]: Abstraction has 446 states and 1682 transitions. [2021-10-08 17:10:21,571 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) [2021-10-08 17:10:21,572 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 1682 transitions. [2021-10-08 17:10:21,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:10:21,573 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:10:21,573 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] [2021-10-08 17:10:21,586 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Ended with exit code 0 [2021-10-08 17:10:21,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:10:21,783 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)] === [2021-10-08 17:10:21,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:10:21,783 INFO L82 PathProgramCache]: Analyzing trace with hash 213358635, now seen corresponding path program 7 times [2021-10-08 17:10:21,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:10:21,784 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [217545355] [2021-10-08 17:10:21,784 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 17:10:21,784 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:10:21,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:10:21,786 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:10:21,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-10-08 17:10:22,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:10:22,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:10:22,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:10:22,383 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:10:22,383 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:10:22,891 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:10:22,891 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:10:22,891 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [217545355] [2021-10-08 17:10:22,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [217545355] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:10:22,892 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:10:22,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2021-10-08 17:10:22,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837291369] [2021-10-08 17:10:22,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 17:10:22,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:10:22,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 17:10:22,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-10-08 17:10:22,894 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) [2021-10-08 17:10:30,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:10:30,434 INFO L93 Difference]: Finished difference Result 1130 states and 3545 transitions. [2021-10-08 17:10:30,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-08 17:10:30,435 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 [2021-10-08 17:10:30,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:10:30,454 INFO L225 Difference]: With dead ends: 1130 [2021-10-08 17:10:30,456 INFO L226 Difference]: Without dead ends: 1130 [2021-10-08 17:10:30,457 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 2299.4ms TimeCoverageRelationStatistics Valid=213, Invalid=717, Unknown=0, NotChecked=0, Total=930 [2021-10-08 17:10:30,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1130 states. [2021-10-08 17:10:30,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1130 to 446. [2021-10-08 17:10:30,483 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) [2021-10-08 17:10:30,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 1690 transitions. [2021-10-08 17:10:30,486 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 1690 transitions. Word has length 20 [2021-10-08 17:10:30,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:10:30,487 INFO L470 AbstractCegarLoop]: Abstraction has 446 states and 1690 transitions. [2021-10-08 17:10:30,487 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) [2021-10-08 17:10:30,487 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 1690 transitions. [2021-10-08 17:10:30,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:10:30,489 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:10:30,489 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] [2021-10-08 17:10:30,506 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2021-10-08 17:10:30,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:10:30,703 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)] === [2021-10-08 17:10:30,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:10:30,703 INFO L82 PathProgramCache]: Analyzing trace with hash 200732205, now seen corresponding path program 12 times [2021-10-08 17:10:30,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:10:30,704 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2075495516] [2021-10-08 17:10:30,704 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 17:10:30,704 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:10:30,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:10:30,706 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:10:30,707 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-10-08 17:10:31,067 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-08 17:10:31,067 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:10:31,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:10:31,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:10:31,311 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:10:31,312 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:10:32,466 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:10:32,467 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:10:32,467 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2075495516] [2021-10-08 17:10:32,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2075495516] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-08 17:10:32,468 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 17:10:32,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 12 [2021-10-08 17:10:32,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987837372] [2021-10-08 17:10:32,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-08 17:10:32,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:10:32,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-08 17:10:32,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-10-08 17:10:32,469 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) [2021-10-08 17:10:32,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:10:32,702 INFO L93 Difference]: Finished difference Result 592 states and 2105 transitions. [2021-10-08 17:10:32,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 17:10:32,703 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 [2021-10-08 17:10:32,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:10:32,706 INFO L225 Difference]: With dead ends: 592 [2021-10-08 17:10:32,707 INFO L226 Difference]: Without dead ends: 592 [2021-10-08 17:10:32,707 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 914.8ms TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2021-10-08 17:10:32,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2021-10-08 17:10:32,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 450. [2021-10-08 17:10:32,721 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) [2021-10-08 17:10:32,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 1706 transitions. [2021-10-08 17:10:32,723 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 1706 transitions. Word has length 20 [2021-10-08 17:10:32,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:10:32,724 INFO L470 AbstractCegarLoop]: Abstraction has 450 states and 1706 transitions. [2021-10-08 17:10:32,724 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) [2021-10-08 17:10:32,724 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 1706 transitions. [2021-10-08 17:10:32,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:10:32,726 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:10:32,726 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] [2021-10-08 17:10:32,740 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Ended with exit code 0 [2021-10-08 17:10:32,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:10:32,940 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)] === [2021-10-08 17:10:32,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:10:32,941 INFO L82 PathProgramCache]: Analyzing trace with hash 1170394125, now seen corresponding path program 13 times [2021-10-08 17:10:32,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:10:32,941 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [867922617] [2021-10-08 17:10:32,942 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 17:10:32,942 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:10:32,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:10:32,943 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:10:32,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-10-08 17:10:33,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:10:33,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-08 17:10:33,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:10:33,417 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:10:33,417 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:10:33,540 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:10:33,541 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:10:33,541 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [867922617] [2021-10-08 17:10:33,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [867922617] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:10:33,541 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:10:33,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 7 [2021-10-08 17:10:33,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610057606] [2021-10-08 17:10:33,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-08 17:10:33,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:10:33,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-08 17:10:33,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-08 17:10:33,543 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) [2021-10-08 17:10:33,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:10:33,831 INFO L93 Difference]: Finished difference Result 660 states and 2347 transitions. [2021-10-08 17:10:33,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 17:10:33,832 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 [2021-10-08 17:10:33,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:10:33,834 INFO L225 Difference]: With dead ends: 660 [2021-10-08 17:10:33,835 INFO L226 Difference]: Without dead ends: 646 [2021-10-08 17:10:33,835 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 131.8ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-08 17:10:33,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 646 states. [2021-10-08 17:10:33,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 646 to 464. [2021-10-08 17:10:33,849 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) [2021-10-08 17:10:33,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 1769 transitions. [2021-10-08 17:10:33,852 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 1769 transitions. Word has length 20 [2021-10-08 17:10:33,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:10:33,852 INFO L470 AbstractCegarLoop]: Abstraction has 464 states and 1769 transitions. [2021-10-08 17:10:33,853 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) [2021-10-08 17:10:33,853 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 1769 transitions. [2021-10-08 17:10:33,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:10:33,855 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:10:33,855 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] [2021-10-08 17:10:33,868 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Ended with exit code 0 [2021-10-08 17:10:34,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:10:34,068 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)] === [2021-10-08 17:10:34,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:10:34,069 INFO L82 PathProgramCache]: Analyzing trace with hash -1786769485, now seen corresponding path program 8 times [2021-10-08 17:10:34,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:10:34,070 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [226973367] [2021-10-08 17:10:34,070 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:10:34,070 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:10:34,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:10:34,071 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:10:34,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-10-08 17:10:34,443 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:10:34,443 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:10:34,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:10:34,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:10:34,676 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:10:34,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:10:35,982 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:10:35,982 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:10:35,982 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [226973367] [2021-10-08 17:10:35,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [226973367] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-08 17:10:35,983 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 17:10:35,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-10-08 17:10:35,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918773780] [2021-10-08 17:10:35,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-08 17:10:35,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:10:35,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-08 17:10:35,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-10-08 17:10:35,984 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) [2021-10-08 17:10:36,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:10:36,442 INFO L93 Difference]: Finished difference Result 586 states and 2135 transitions. [2021-10-08 17:10:36,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-08 17:10:36,443 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 [2021-10-08 17:10:36,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:10:36,445 INFO L225 Difference]: With dead ends: 586 [2021-10-08 17:10:36,445 INFO L226 Difference]: Without dead ends: 584 [2021-10-08 17:10:36,445 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1338.9ms TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2021-10-08 17:10:36,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2021-10-08 17:10:36,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 464. [2021-10-08 17:10:36,459 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) [2021-10-08 17:10:36,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 1767 transitions. [2021-10-08 17:10:36,462 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 1767 transitions. Word has length 20 [2021-10-08 17:10:36,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:10:36,462 INFO L470 AbstractCegarLoop]: Abstraction has 464 states and 1767 transitions. [2021-10-08 17:10:36,462 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) [2021-10-08 17:10:36,462 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 1767 transitions. [2021-10-08 17:10:36,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:10:36,464 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:10:36,465 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] [2021-10-08 17:10:36,483 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2021-10-08 17:10:36,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:10:36,679 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)] === [2021-10-08 17:10:36,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:10:36,680 INFO L82 PathProgramCache]: Analyzing trace with hash -479326165, now seen corresponding path program 9 times [2021-10-08 17:10:36,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:10:36,681 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [284042838] [2021-10-08 17:10:36,681 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:10:36,682 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:10:36,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:10:36,683 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:10:36,694 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2021-10-08 17:10:37,068 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-08 17:10:37,068 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:10:37,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:10:37,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:10:37,366 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:10:37,366 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:10:38,532 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:10:38,532 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:10:38,533 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [284042838] [2021-10-08 17:10:38,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [284042838] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:10:38,533 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:10:38,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2021-10-08 17:10:38,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571166932] [2021-10-08 17:10:38,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 17:10:38,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:10:38,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 17:10:38,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-10-08 17:10:38,535 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) [2021-10-08 17:10:53,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:10:53,372 INFO L93 Difference]: Finished difference Result 832 states and 2803 transitions. [2021-10-08 17:10:53,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-08 17:10:53,373 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 [2021-10-08 17:10:53,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:10:53,376 INFO L225 Difference]: With dead ends: 832 [2021-10-08 17:10:53,376 INFO L226 Difference]: Without dead ends: 832 [2021-10-08 17:10:53,377 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 3620.3ms TimeCoverageRelationStatistics Valid=187, Invalid=515, Unknown=0, NotChecked=0, Total=702 [2021-10-08 17:10:53,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 832 states. [2021-10-08 17:10:53,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 832 to 470. [2021-10-08 17:10:53,394 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) [2021-10-08 17:10:53,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 1792 transitions. [2021-10-08 17:10:53,397 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 1792 transitions. Word has length 20 [2021-10-08 17:10:53,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:10:53,397 INFO L470 AbstractCegarLoop]: Abstraction has 470 states and 1792 transitions. [2021-10-08 17:10:53,397 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) [2021-10-08 17:10:53,397 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 1792 transitions. [2021-10-08 17:10:53,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:10:53,399 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:10:53,399 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] [2021-10-08 17:10:53,414 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2021-10-08 17:10:53,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:10:53,614 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)] === [2021-10-08 17:10:53,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:10:53,614 INFO L82 PathProgramCache]: Analyzing trace with hash -960460377, now seen corresponding path program 10 times [2021-10-08 17:10:53,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:10:53,615 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [859619843] [2021-10-08 17:10:53,616 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 17:10:53,616 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:10:53,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:10:53,617 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:10:53,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2021-10-08 17:10:53,978 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 17:10:53,978 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:10:53,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:10:53,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:10:54,271 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:10:54,272 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:10:54,643 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:10:54,643 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:10:54,643 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [859619843] [2021-10-08 17:10:54,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [859619843] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-08 17:10:54,643 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 17:10:54,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2021-10-08 17:10:54,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576450] [2021-10-08 17:10:54,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-08 17:10:54,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:10:54,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-08 17:10:54,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-08 17:10:54,645 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) [2021-10-08 17:10:55,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:10:55,399 INFO L93 Difference]: Finished difference Result 830 states and 2944 transitions. [2021-10-08 17:10:55,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-08 17:10:55,400 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 [2021-10-08 17:10:55,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:10:55,403 INFO L225 Difference]: With dead ends: 830 [2021-10-08 17:10:55,404 INFO L226 Difference]: Without dead ends: 830 [2021-10-08 17:10:55,404 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 634.9ms TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2021-10-08 17:10:55,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2021-10-08 17:10:55,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 468. [2021-10-08 17:10:55,421 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) [2021-10-08 17:10:55,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 1782 transitions. [2021-10-08 17:10:55,424 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 1782 transitions. Word has length 20 [2021-10-08 17:10:55,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:10:55,424 INFO L470 AbstractCegarLoop]: Abstraction has 468 states and 1782 transitions. [2021-10-08 17:10:55,424 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) [2021-10-08 17:10:55,425 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 1782 transitions. [2021-10-08 17:10:55,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:10:55,426 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:10:55,426 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] [2021-10-08 17:10:55,441 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2021-10-08 17:10:55,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:10:55,641 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)] === [2021-10-08 17:10:55,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:10:55,641 INFO L82 PathProgramCache]: Analyzing trace with hash 25668397, now seen corresponding path program 11 times [2021-10-08 17:10:55,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:10:55,642 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2068637137] [2021-10-08 17:10:55,643 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 17:10:55,643 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:10:55,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:10:55,644 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:10:55,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2021-10-08 17:10:55,984 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:10:55,984 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:10:55,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:10:55,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:10:56,291 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:10:56,291 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:10:57,180 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:10:57,181 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:10:57,181 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2068637137] [2021-10-08 17:10:57,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2068637137] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-08 17:10:57,181 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 17:10:57,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2021-10-08 17:10:57,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133720131] [2021-10-08 17:10:57,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-08 17:10:57,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:10:57,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-08 17:10:57,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-08 17:10:57,183 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) [2021-10-08 17:10:58,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:10:58,385 INFO L93 Difference]: Finished difference Result 672 states and 2434 transitions. [2021-10-08 17:10:58,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 17:10:58,387 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 [2021-10-08 17:10:58,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:10:58,389 INFO L225 Difference]: With dead ends: 672 [2021-10-08 17:10:58,389 INFO L226 Difference]: Without dead ends: 672 [2021-10-08 17:10:58,389 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1018.6ms TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-10-08 17:10:58,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2021-10-08 17:10:58,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 472. [2021-10-08 17:10:58,400 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) [2021-10-08 17:10:58,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 1805 transitions. [2021-10-08 17:10:58,402 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 1805 transitions. Word has length 20 [2021-10-08 17:10:58,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:10:58,402 INFO L470 AbstractCegarLoop]: Abstraction has 472 states and 1805 transitions. [2021-10-08 17:10:58,403 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) [2021-10-08 17:10:58,403 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 1805 transitions. [2021-10-08 17:10:58,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:10:58,404 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:10:58,404 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] [2021-10-08 17:10:58,415 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2021-10-08 17:10:58,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:10:58,605 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)] === [2021-10-08 17:10:58,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:10:58,606 INFO L82 PathProgramCache]: Analyzing trace with hash -490013813, now seen corresponding path program 12 times [2021-10-08 17:10:58,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:10:58,606 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2136434392] [2021-10-08 17:10:58,606 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 17:10:58,607 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:10:58,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:10:58,608 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:10:58,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2021-10-08 17:10:59,051 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-08 17:10:59,052 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:10:59,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:10:59,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:10:59,344 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:10:59,344 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:10:59,813 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:10:59,813 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:10:59,813 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2136434392] [2021-10-08 17:10:59,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2136434392] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-08 17:10:59,814 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 17:10:59,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2021-10-08 17:10:59,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539254301] [2021-10-08 17:10:59,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-08 17:10:59,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:10:59,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-08 17:10:59,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-10-08 17:10:59,815 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) [2021-10-08 17:11:00,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:11:00,995 INFO L93 Difference]: Finished difference Result 646 states and 2368 transitions. [2021-10-08 17:11:00,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 17:11:00,997 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 [2021-10-08 17:11:00,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:11:00,999 INFO L225 Difference]: With dead ends: 646 [2021-10-08 17:11:01,000 INFO L226 Difference]: Without dead ends: 646 [2021-10-08 17:11:01,000 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 573.7ms TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2021-10-08 17:11:01,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 646 states. [2021-10-08 17:11:01,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 646 to 456. [2021-10-08 17:11:01,014 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) [2021-10-08 17:11:01,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 1721 transitions. [2021-10-08 17:11:01,017 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 1721 transitions. Word has length 20 [2021-10-08 17:11:01,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:11:01,017 INFO L470 AbstractCegarLoop]: Abstraction has 456 states and 1721 transitions. [2021-10-08 17:11:01,018 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) [2021-10-08 17:11:01,018 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 1721 transitions. [2021-10-08 17:11:01,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:11:01,019 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:11:01,020 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] [2021-10-08 17:11:01,033 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2021-10-08 17:11:01,232 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:11:01,233 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)] === [2021-10-08 17:11:01,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:11:01,233 INFO L82 PathProgramCache]: Analyzing trace with hash -1582003737, now seen corresponding path program 13 times [2021-10-08 17:11:01,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:11:01,234 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [269088522] [2021-10-08 17:11:01,234 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 17:11:01,235 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:11:01,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:11:01,236 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:11:01,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2021-10-08 17:11:01,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:11:01,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:11:01,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:11:01,892 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:11:01,892 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:11:02,784 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:11:02,784 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:11:02,784 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [269088522] [2021-10-08 17:11:02,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [269088522] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-08 17:11:02,785 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 17:11:02,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2021-10-08 17:11:02,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546900203] [2021-10-08 17:11:02,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-08 17:11:02,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:11:02,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-08 17:11:02,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-08 17:11:02,787 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) [2021-10-08 17:11:03,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:11:03,813 INFO L93 Difference]: Finished difference Result 654 states and 2344 transitions. [2021-10-08 17:11:03,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 17:11:03,815 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 [2021-10-08 17:11:03,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:11:03,817 INFO L225 Difference]: With dead ends: 654 [2021-10-08 17:11:03,817 INFO L226 Difference]: Without dead ends: 654 [2021-10-08 17:11:03,817 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1052.9ms TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-10-08 17:11:03,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654 states. [2021-10-08 17:11:03,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 468. [2021-10-08 17:11:03,828 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) [2021-10-08 17:11:03,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 1776 transitions. [2021-10-08 17:11:03,830 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 1776 transitions. Word has length 20 [2021-10-08 17:11:03,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:11:03,830 INFO L470 AbstractCegarLoop]: Abstraction has 468 states and 1776 transitions. [2021-10-08 17:11:03,830 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) [2021-10-08 17:11:03,831 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 1776 transitions. [2021-10-08 17:11:03,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:11:03,832 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:11:03,832 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] [2021-10-08 17:11:03,843 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Ended with exit code 0 [2021-10-08 17:11:04,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:11:04,033 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)] === [2021-10-08 17:11:04,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:11:04,034 INFO L82 PathProgramCache]: Analyzing trace with hash -2097685947, now seen corresponding path program 14 times [2021-10-08 17:11:04,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:11:04,034 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1850403646] [2021-10-08 17:11:04,034 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:11:04,035 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:11:04,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:11:04,036 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:11:04,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2021-10-08 17:11:04,491 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:11:04,491 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:11:04,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:11:04,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:11:04,788 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:11:04,789 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:11:05,503 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:11:05,503 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:11:05,503 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1850403646] [2021-10-08 17:11:05,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1850403646] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-08 17:11:05,504 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 17:11:05,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2021-10-08 17:11:05,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532969421] [2021-10-08 17:11:05,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-08 17:11:05,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:11:05,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-08 17:11:05,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-10-08 17:11:05,506 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) [2021-10-08 17:11:06,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:11:06,481 INFO L93 Difference]: Finished difference Result 662 states and 2362 transitions. [2021-10-08 17:11:06,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 17:11:06,482 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 [2021-10-08 17:11:06,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:11:06,484 INFO L225 Difference]: With dead ends: 662 [2021-10-08 17:11:06,484 INFO L226 Difference]: Without dead ends: 662 [2021-10-08 17:11:06,485 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 802.9ms TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-10-08 17:11:06,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2021-10-08 17:11:06,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 466. [2021-10-08 17:11:06,496 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) [2021-10-08 17:11:06,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 1763 transitions. [2021-10-08 17:11:06,499 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 1763 transitions. Word has length 20 [2021-10-08 17:11:06,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:11:06,499 INFO L470 AbstractCegarLoop]: Abstraction has 466 states and 1763 transitions. [2021-10-08 17:11:06,499 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) [2021-10-08 17:11:06,500 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 1763 transitions. [2021-10-08 17:11:06,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:11:06,501 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:11:06,501 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] [2021-10-08 17:11:06,513 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2021-10-08 17:11:06,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:11:06,707 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)] === [2021-10-08 17:11:06,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:11:06,708 INFO L82 PathProgramCache]: Analyzing trace with hash -389451223, now seen corresponding path program 15 times [2021-10-08 17:11:06,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:11:06,708 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2112522366] [2021-10-08 17:11:06,708 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:11:06,709 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:11:06,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:11:06,710 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:11:06,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2021-10-08 17:11:07,223 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-08 17:11:07,224 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:11:07,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:11:07,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:11:07,573 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:11:07,574 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:11:07,924 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:11:07,924 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:11:07,925 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2112522366] [2021-10-08 17:11:07,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2112522366] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-08 17:11:07,925 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 17:11:07,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2021-10-08 17:11:07,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725750773] [2021-10-08 17:11:07,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-08 17:11:07,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:11:07,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-08 17:11:07,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-10-08 17:11:07,927 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) [2021-10-08 17:11:08,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:11:08,902 INFO L93 Difference]: Finished difference Result 786 states and 2754 transitions. [2021-10-08 17:11:08,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-08 17:11:08,904 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 [2021-10-08 17:11:08,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:11:08,917 INFO L225 Difference]: With dead ends: 786 [2021-10-08 17:11:08,917 INFO L226 Difference]: Without dead ends: 786 [2021-10-08 17:11:08,918 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 633.6ms TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2021-10-08 17:11:08,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 786 states. [2021-10-08 17:11:08,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 786 to 470. [2021-10-08 17:11:08,963 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) [2021-10-08 17:11:08,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 1776 transitions. [2021-10-08 17:11:08,971 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 1776 transitions. Word has length 20 [2021-10-08 17:11:08,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:11:08,972 INFO L470 AbstractCegarLoop]: Abstraction has 470 states and 1776 transitions. [2021-10-08 17:11:08,972 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) [2021-10-08 17:11:08,972 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 1776 transitions. [2021-10-08 17:11:08,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:11:08,976 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:11:08,977 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] [2021-10-08 17:11:08,997 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2021-10-08 17:11:09,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:11:09,193 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)] === [2021-10-08 17:11:09,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:11:09,194 INFO L82 PathProgramCache]: Analyzing trace with hash -598023483, now seen corresponding path program 14 times [2021-10-08 17:11:09,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:11:09,194 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [81334140] [2021-10-08 17:11:09,194 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:11:09,195 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:11:09,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:11:09,196 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:11:09,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2021-10-08 17:11:09,713 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:11:09,713 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:11:09,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:11:09,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:11:10,012 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:11:10,012 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:11:10,612 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:11:10,613 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:11:10,613 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [81334140] [2021-10-08 17:11:10,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [81334140] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:11:10,615 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:11:10,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-10-08 17:11:10,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471498865] [2021-10-08 17:11:10,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 17:11:10,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:11:10,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 17:11:10,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-08 17:11:10,619 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) [2021-10-08 17:11:12,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:11:12,325 INFO L93 Difference]: Finished difference Result 780 states and 2608 transitions. [2021-10-08 17:11:12,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-08 17:11:12,325 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 [2021-10-08 17:11:12,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:11:12,328 INFO L225 Difference]: With dead ends: 780 [2021-10-08 17:11:12,328 INFO L226 Difference]: Without dead ends: 780 [2021-10-08 17:11:12,328 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 869.9ms TimeCoverageRelationStatistics Valid=112, Invalid=268, Unknown=0, NotChecked=0, Total=380 [2021-10-08 17:11:12,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2021-10-08 17:11:12,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 484. [2021-10-08 17:11:12,342 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) [2021-10-08 17:11:12,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 1827 transitions. [2021-10-08 17:11:12,344 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 1827 transitions. Word has length 20 [2021-10-08 17:11:12,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:11:12,346 INFO L470 AbstractCegarLoop]: Abstraction has 484 states and 1827 transitions. [2021-10-08 17:11:12,346 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) [2021-10-08 17:11:12,347 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 1827 transitions. [2021-10-08 17:11:12,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:11:12,349 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:11:12,349 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] [2021-10-08 17:11:12,361 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2021-10-08 17:11:12,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:11:12,550 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)] === [2021-10-08 17:11:12,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:11:12,551 INFO L82 PathProgramCache]: Analyzing trace with hash 1202976017, now seen corresponding path program 15 times [2021-10-08 17:11:12,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:11:12,551 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2012143132] [2021-10-08 17:11:12,551 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:11:12,551 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:11:12,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:11:12,553 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:11:12,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2021-10-08 17:11:13,085 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-08 17:11:13,085 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:11:13,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-08 17:11:13,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:11:13,260 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:11:13,260 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:11:13,419 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:11:13,420 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:11:13,420 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2012143132] [2021-10-08 17:11:13,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2012143132] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:11:13,420 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:11:13,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 7 [2021-10-08 17:11:13,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127403871] [2021-10-08 17:11:13,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-08 17:11:13,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:11:13,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-08 17:11:13,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-08 17:11:13,422 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) [2021-10-08 17:11:13,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:11:13,733 INFO L93 Difference]: Finished difference Result 668 states and 2314 transitions. [2021-10-08 17:11:13,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 17:11:13,734 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 [2021-10-08 17:11:13,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:11:13,738 INFO L225 Difference]: With dead ends: 668 [2021-10-08 17:11:13,738 INFO L226 Difference]: Without dead ends: 654 [2021-10-08 17:11:13,738 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 150.1ms TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-10-08 17:11:13,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654 states. [2021-10-08 17:11:13,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 480. [2021-10-08 17:11:13,755 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) [2021-10-08 17:11:13,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 1794 transitions. [2021-10-08 17:11:13,758 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 1794 transitions. Word has length 20 [2021-10-08 17:11:13,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:11:13,758 INFO L470 AbstractCegarLoop]: Abstraction has 480 states and 1794 transitions. [2021-10-08 17:11:13,758 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) [2021-10-08 17:11:13,758 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 1794 transitions. [2021-10-08 17:11:13,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:11:13,760 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:11:13,760 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] [2021-10-08 17:11:13,777 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Forceful destruction successful, exit code 0 [2021-10-08 17:11:13,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:11:13,974 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)] === [2021-10-08 17:11:13,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:11:13,975 INFO L82 PathProgramCache]: Analyzing trace with hash 2076214169, now seen corresponding path program 7 times [2021-10-08 17:11:13,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:11:13,975 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [149039716] [2021-10-08 17:11:13,975 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 17:11:13,976 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:11:13,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:11:13,977 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:11:13,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2021-10-08 17:11:14,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:11:14,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:11:14,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:11:14,700 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:11:14,701 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:11:16,189 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:11:16,189 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:11:16,189 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [149039716] [2021-10-08 17:11:16,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [149039716] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-08 17:11:16,189 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 17:11:16,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2021-10-08 17:11:16,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589404825] [2021-10-08 17:11:16,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-08 17:11:16,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:11:16,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-08 17:11:16,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-10-08 17:11:16,191 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) [2021-10-08 17:11:16,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:11:16,654 INFO L93 Difference]: Finished difference Result 718 states and 2517 transitions. [2021-10-08 17:11:16,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 17:11:16,655 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 [2021-10-08 17:11:16,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:11:16,658 INFO L225 Difference]: With dead ends: 718 [2021-10-08 17:11:16,658 INFO L226 Difference]: Without dead ends: 718 [2021-10-08 17:11:16,659 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1163.5ms TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2021-10-08 17:11:16,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2021-10-08 17:11:16,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 480. [2021-10-08 17:11:16,689 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) [2021-10-08 17:11:16,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 1794 transitions. [2021-10-08 17:11:16,692 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 1794 transitions. Word has length 20 [2021-10-08 17:11:16,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:11:16,692 INFO L470 AbstractCegarLoop]: Abstraction has 480 states and 1794 transitions. [2021-10-08 17:11:16,693 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) [2021-10-08 17:11:16,693 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 1794 transitions. [2021-10-08 17:11:16,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:11:16,695 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:11:16,695 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] [2021-10-08 17:11:16,715 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Forceful destruction successful, exit code 0 [2021-10-08 17:11:16,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:11:16,909 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)] === [2021-10-08 17:11:16,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:11:16,909 INFO L82 PathProgramCache]: Analyzing trace with hash -384102715, now seen corresponding path program 16 times [2021-10-08 17:11:16,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:11:16,910 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1975494308] [2021-10-08 17:11:16,910 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 17:11:16,910 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:11:16,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:11:16,912 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:11:16,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2021-10-08 17:11:17,340 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 17:11:17,340 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:11:17,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:11:17,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:11:17,660 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:11:17,660 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:11:18,293 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:11:18,293 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:11:18,293 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1975494308] [2021-10-08 17:11:18,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1975494308] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:11:18,294 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:11:18,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-10-08 17:11:18,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332851600] [2021-10-08 17:11:18,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 17:11:18,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:11:18,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 17:11:18,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-10-08 17:11:18,295 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) [2021-10-08 17:11:23,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:11:23,098 INFO L93 Difference]: Finished difference Result 978 states and 3202 transitions. [2021-10-08 17:11:23,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-08 17:11:23,099 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 [2021-10-08 17:11:23,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:11:23,103 INFO L225 Difference]: With dead ends: 978 [2021-10-08 17:11:23,103 INFO L226 Difference]: Without dead ends: 978 [2021-10-08 17:11:23,103 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 2016.4ms TimeCoverageRelationStatistics Valid=136, Invalid=284, Unknown=0, NotChecked=0, Total=420 [2021-10-08 17:11:23,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 978 states. [2021-10-08 17:11:23,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 978 to 492. [2021-10-08 17:11:23,121 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) [2021-10-08 17:11:23,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 1872 transitions. [2021-10-08 17:11:23,124 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 1872 transitions. Word has length 20 [2021-10-08 17:11:23,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:11:23,124 INFO L470 AbstractCegarLoop]: Abstraction has 492 states and 1872 transitions. [2021-10-08 17:11:23,124 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) [2021-10-08 17:11:23,124 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 1872 transitions. [2021-10-08 17:11:23,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:11:23,126 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:11:23,126 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] [2021-10-08 17:11:23,141 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (47)] Forceful destruction successful, exit code 0 [2021-10-08 17:11:23,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:11:23,341 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)] === [2021-10-08 17:11:23,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:11:23,341 INFO L82 PathProgramCache]: Analyzing trace with hash -97071931, now seen corresponding path program 17 times [2021-10-08 17:11:23,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:11:23,342 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1180191285] [2021-10-08 17:11:23,342 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 17:11:23,343 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:11:23,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:11:23,344 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:11:23,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2021-10-08 17:11:23,758 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:11:23,759 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:11:23,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:11:23,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:11:24,110 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:11:24,110 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:11:24,649 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:11:24,649 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:11:24,649 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1180191285] [2021-10-08 17:11:24,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1180191285] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:11:24,650 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:11:24,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-10-08 17:11:24,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020042585] [2021-10-08 17:11:24,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 17:11:24,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:11:24,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 17:11:24,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2021-10-08 17:11:24,651 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) [2021-10-08 17:11:31,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:11:31,121 INFO L93 Difference]: Finished difference Result 942 states and 3115 transitions. [2021-10-08 17:11:31,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-08 17:11:31,122 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 [2021-10-08 17:11:31,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:11:31,126 INFO L225 Difference]: With dead ends: 942 [2021-10-08 17:11:31,126 INFO L226 Difference]: Without dead ends: 942 [2021-10-08 17:11:31,127 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 1256.8ms TimeCoverageRelationStatistics Valid=200, Invalid=352, Unknown=0, NotChecked=0, Total=552 [2021-10-08 17:11:31,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 942 states. [2021-10-08 17:11:31,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 942 to 480. [2021-10-08 17:11:31,157 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) [2021-10-08 17:11:31,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 1794 transitions. [2021-10-08 17:11:31,160 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 1794 transitions. Word has length 20 [2021-10-08 17:11:31,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:11:31,160 INFO L470 AbstractCegarLoop]: Abstraction has 480 states and 1794 transitions. [2021-10-08 17:11:31,161 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) [2021-10-08 17:11:31,161 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 1794 transitions. [2021-10-08 17:11:31,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:11:31,163 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:11:31,163 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] [2021-10-08 17:11:31,179 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (48)] Forceful destruction successful, exit code 0 [2021-10-08 17:11:31,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:11:31,378 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)] === [2021-10-08 17:11:31,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:11:31,380 INFO L82 PathProgramCache]: Analyzing trace with hash 970762473, now seen corresponding path program 8 times [2021-10-08 17:11:31,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:11:31,381 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1770311839] [2021-10-08 17:11:31,381 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:11:31,381 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:11:31,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:11:31,382 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:11:31,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2021-10-08 17:11:31,883 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:11:31,883 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:11:31,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:11:31,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:11:32,115 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:11:32,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:11:33,605 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:11:33,606 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:11:33,606 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1770311839] [2021-10-08 17:11:33,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1770311839] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-08 17:11:33,606 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 17:11:33,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2021-10-08 17:11:33,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178289444] [2021-10-08 17:11:33,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-08 17:11:33,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:11:33,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-08 17:11:33,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-10-08 17:11:33,607 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) [2021-10-08 17:11:34,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:11:34,034 INFO L93 Difference]: Finished difference Result 624 states and 2222 transitions. [2021-10-08 17:11:34,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 17:11:34,035 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 [2021-10-08 17:11:34,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:11:34,037 INFO L225 Difference]: With dead ends: 624 [2021-10-08 17:11:34,037 INFO L226 Difference]: Without dead ends: 624 [2021-10-08 17:11:34,037 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1055.8ms TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2021-10-08 17:11:34,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2021-10-08 17:11:34,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 476. [2021-10-08 17:11:34,047 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) [2021-10-08 17:11:34,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 1783 transitions. [2021-10-08 17:11:34,049 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 1783 transitions. Word has length 20 [2021-10-08 17:11:34,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:11:34,049 INFO L470 AbstractCegarLoop]: Abstraction has 476 states and 1783 transitions. [2021-10-08 17:11:34,049 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) [2021-10-08 17:11:34,049 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 1783 transitions. [2021-10-08 17:11:34,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:11:34,051 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:11:34,051 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] [2021-10-08 17:11:34,063 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (49)] Forceful destruction successful, exit code 0 [2021-10-08 17:11:34,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:11:34,252 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)] === [2021-10-08 17:11:34,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:11:34,252 INFO L82 PathProgramCache]: Analyzing trace with hash 432977767, now seen corresponding path program 16 times [2021-10-08 17:11:34,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:11:34,253 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2062028030] [2021-10-08 17:11:34,253 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 17:11:34,253 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:11:34,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:11:34,255 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:11:34,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2021-10-08 17:11:34,727 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 17:11:34,727 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:11:34,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:11:34,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:11:34,980 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:11:34,980 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:11:35,693 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:11:35,694 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:11:35,694 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2062028030] [2021-10-08 17:11:35,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2062028030] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-08 17:11:35,694 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 17:11:35,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-10-08 17:11:35,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119452052] [2021-10-08 17:11:35,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-08 17:11:35,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:11:35,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-08 17:11:35,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-10-08 17:11:35,696 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) [2021-10-08 17:11:36,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:11:36,306 INFO L93 Difference]: Finished difference Result 630 states and 2215 transitions. [2021-10-08 17:11:36,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-08 17:11:36,307 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 [2021-10-08 17:11:36,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:11:36,308 INFO L225 Difference]: With dead ends: 630 [2021-10-08 17:11:36,308 INFO L226 Difference]: Without dead ends: 628 [2021-10-08 17:11:36,309 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 706.8ms TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2021-10-08 17:11:36,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2021-10-08 17:11:36,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 478. [2021-10-08 17:11:36,319 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) [2021-10-08 17:11:36,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 1788 transitions. [2021-10-08 17:11:36,321 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 1788 transitions. Word has length 20 [2021-10-08 17:11:36,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:11:36,321 INFO L470 AbstractCegarLoop]: Abstraction has 478 states and 1788 transitions. [2021-10-08 17:11:36,322 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) [2021-10-08 17:11:36,322 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 1788 transitions. [2021-10-08 17:11:36,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:11:36,323 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:11:36,324 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:11:36,334 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (50)] Forceful destruction successful, exit code 0 [2021-10-08 17:11:36,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:11:36,526 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)] === [2021-10-08 17:11:36,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:11:36,537 INFO L82 PathProgramCache]: Analyzing trace with hash -1867112961, now seen corresponding path program 17 times [2021-10-08 17:11:36,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:11:36,538 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1916650400] [2021-10-08 17:11:36,538 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 17:11:36,538 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:11:36,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:11:36,550 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:11:36,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2021-10-08 17:11:37,086 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:11:37,086 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:11:37,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:11:37,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:11:37,408 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:11:37,409 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:11:38,192 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:11:38,192 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:11:38,192 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1916650400] [2021-10-08 17:11:38,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1916650400] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:11:38,193 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:11:38,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2021-10-08 17:11:38,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294851544] [2021-10-08 17:11:38,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 17:11:38,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:11:38,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 17:11:38,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2021-10-08 17:11:38,195 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) [2021-10-08 17:11:46,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:11:46,924 INFO L93 Difference]: Finished difference Result 1294 states and 4079 transitions. [2021-10-08 17:11:46,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-08 17:11:46,925 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 [2021-10-08 17:11:46,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:11:46,929 INFO L225 Difference]: With dead ends: 1294 [2021-10-08 17:11:46,929 INFO L226 Difference]: Without dead ends: 1294 [2021-10-08 17:11:46,930 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 2749.9ms TimeCoverageRelationStatistics Valid=236, Invalid=694, Unknown=0, NotChecked=0, Total=930 [2021-10-08 17:11:46,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1294 states. [2021-10-08 17:11:46,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1294 to 492. [2021-10-08 17:11:46,948 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) [2021-10-08 17:11:46,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 1873 transitions. [2021-10-08 17:11:46,950 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 1873 transitions. Word has length 20 [2021-10-08 17:11:46,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:11:46,950 INFO L470 AbstractCegarLoop]: Abstraction has 492 states and 1873 transitions. [2021-10-08 17:11:46,950 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) [2021-10-08 17:11:46,950 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 1873 transitions. [2021-10-08 17:11:46,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:11:46,952 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:11:46,952 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] [2021-10-08 17:11:46,963 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (51)] Forceful destruction successful, exit code 0 [2021-10-08 17:11:47,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:11:47,153 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)] === [2021-10-08 17:11:47,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:11:47,154 INFO L82 PathProgramCache]: Analyzing trace with hash -1879739391, now seen corresponding path program 18 times [2021-10-08 17:11:47,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:11:47,154 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [387860358] [2021-10-08 17:11:47,155 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 17:11:47,155 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:11:47,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:11:47,157 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:11:47,158 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2021-10-08 17:11:47,660 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-08 17:11:47,660 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:11:47,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:11:47,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:11:47,913 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:11:47,914 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:11:48,588 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:11:48,589 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:11:48,589 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [387860358] [2021-10-08 17:11:48,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [387860358] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-08 17:11:48,589 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 17:11:48,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 11 [2021-10-08 17:11:48,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682280491] [2021-10-08 17:11:48,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-08 17:11:48,590 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:11:48,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-08 17:11:48,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-10-08 17:11:48,591 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) [2021-10-08 17:11:49,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:11:49,040 INFO L93 Difference]: Finished difference Result 638 states and 2304 transitions. [2021-10-08 17:11:49,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 17:11:49,041 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 [2021-10-08 17:11:49,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:11:49,043 INFO L225 Difference]: With dead ends: 638 [2021-10-08 17:11:49,043 INFO L226 Difference]: Without dead ends: 638 [2021-10-08 17:11:49,043 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 538.2ms TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2021-10-08 17:11:49,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2021-10-08 17:11:49,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 494. [2021-10-08 17:11:49,054 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) [2021-10-08 17:11:49,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 1880 transitions. [2021-10-08 17:11:49,057 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 1880 transitions. Word has length 20 [2021-10-08 17:11:49,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:11:49,057 INFO L470 AbstractCegarLoop]: Abstraction has 494 states and 1880 transitions. [2021-10-08 17:11:49,057 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) [2021-10-08 17:11:49,057 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 1880 transitions. [2021-10-08 17:11:49,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:11:49,059 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:11:49,059 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] [2021-10-08 17:11:49,074 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (52)] Forceful destruction successful, exit code 0 [2021-10-08 17:11:49,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:11:49,274 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)] === [2021-10-08 17:11:49,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:11:49,274 INFO L82 PathProgramCache]: Analyzing trace with hash 427726215, now seen corresponding path program 18 times [2021-10-08 17:11:49,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:11:49,275 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [585218351] [2021-10-08 17:11:49,275 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 17:11:49,276 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:11:49,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:11:49,277 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:11:49,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2021-10-08 17:11:50,170 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-08 17:11:50,170 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:11:50,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:11:50,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:11:50,450 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:11:50,450 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:11:51,865 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:11:51,865 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:11:51,865 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [585218351] [2021-10-08 17:11:51,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [585218351] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-08 17:11:51,865 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 17:11:51,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-10-08 17:11:51,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360219799] [2021-10-08 17:11:51,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-08 17:11:51,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:11:51,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-08 17:11:51,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-08 17:11:51,867 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) [2021-10-08 17:11:52,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:11:52,361 INFO L93 Difference]: Finished difference Result 634 states and 2292 transitions. [2021-10-08 17:11:52,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-08 17:11:52,362 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 [2021-10-08 17:11:52,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:11:52,365 INFO L225 Difference]: With dead ends: 634 [2021-10-08 17:11:52,365 INFO L226 Difference]: Without dead ends: 632 [2021-10-08 17:11:52,365 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1344.3ms TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2021-10-08 17:11:52,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2021-10-08 17:11:52,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 494. [2021-10-08 17:11:52,377 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) [2021-10-08 17:11:52,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 1878 transitions. [2021-10-08 17:11:52,378 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 1878 transitions. Word has length 20 [2021-10-08 17:11:52,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:11:52,379 INFO L470 AbstractCegarLoop]: Abstraction has 494 states and 1878 transitions. [2021-10-08 17:11:52,379 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) [2021-10-08 17:11:52,379 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 1878 transitions. [2021-10-08 17:11:52,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:11:52,380 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:11:52,380 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:11:52,393 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (53)] Ended with exit code 0 [2021-10-08 17:11:52,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:11:52,581 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)] === [2021-10-08 17:11:52,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:11:52,582 INFO L82 PathProgramCache]: Analyzing trace with hash 1735169535, now seen corresponding path program 19 times [2021-10-08 17:11:52,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:11:52,583 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [150064594] [2021-10-08 17:11:52,583 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 17:11:52,583 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:11:52,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:11:52,584 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:11:52,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2021-10-08 17:11:53,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:11:53,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:11:53,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:11:53,357 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:11:53,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:11:54,229 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:11:54,230 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:11:54,230 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [150064594] [2021-10-08 17:11:54,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [150064594] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:11:54,230 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:11:54,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2021-10-08 17:11:54,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691219866] [2021-10-08 17:11:54,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 17:11:54,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:11:54,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 17:11:54,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-10-08 17:11:54,232 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) [2021-10-08 17:12:23,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:12:23,261 INFO L93 Difference]: Finished difference Result 1058 states and 3484 transitions. [2021-10-08 17:12:23,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-08 17:12:23,271 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 [2021-10-08 17:12:23,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:12:23,275 INFO L225 Difference]: With dead ends: 1058 [2021-10-08 17:12:23,275 INFO L226 Difference]: Without dead ends: 1058 [2021-10-08 17:12:23,275 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 5727.6ms TimeCoverageRelationStatistics Valid=178, Invalid=578, Unknown=0, NotChecked=0, Total=756 [2021-10-08 17:12:23,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1058 states. [2021-10-08 17:12:23,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1058 to 494. [2021-10-08 17:12:23,296 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) [2021-10-08 17:12:23,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 1886 transitions. [2021-10-08 17:12:23,298 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 1886 transitions. Word has length 20 [2021-10-08 17:12:23,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:12:23,299 INFO L470 AbstractCegarLoop]: Abstraction has 494 states and 1886 transitions. [2021-10-08 17:12:23,299 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) [2021-10-08 17:12:23,299 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 1886 transitions. [2021-10-08 17:12:23,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:12:23,301 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:12:23,301 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] [2021-10-08 17:12:23,315 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (54)] Forceful destruction successful, exit code 0 [2021-10-08 17:12:23,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:12:23,503 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)] === [2021-10-08 17:12:23,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:12:23,503 INFO L82 PathProgramCache]: Analyzing trace with hash -848166297, now seen corresponding path program 20 times [2021-10-08 17:12:23,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:12:23,504 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1597154367] [2021-10-08 17:12:23,504 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:12:23,504 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:12:23,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:12:23,505 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:12:23,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (55)] Waiting until timeout for monitored process [2021-10-08 17:12:24,097 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:12:24,098 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:12:24,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:12:24,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:12:24,430 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:12:24,430 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:12:25,709 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:12:25,709 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:12:25,709 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1597154367] [2021-10-08 17:12:25,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1597154367] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:12:25,709 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:12:25,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2021-10-08 17:12:25,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333167416] [2021-10-08 17:12:25,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 17:12:25,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:12:25,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 17:12:25,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-10-08 17:12:25,711 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) [2021-10-08 17:12:44,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:12:44,709 INFO L93 Difference]: Finished difference Result 1108 states and 3663 transitions. [2021-10-08 17:12:44,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-08 17:12:44,717 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 [2021-10-08 17:12:44,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:12:44,720 INFO L225 Difference]: With dead ends: 1108 [2021-10-08 17:12:44,720 INFO L226 Difference]: Without dead ends: 1108 [2021-10-08 17:12:44,720 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 2824.5ms TimeCoverageRelationStatistics Valid=138, Invalid=368, Unknown=0, NotChecked=0, Total=506 [2021-10-08 17:12:44,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1108 states. [2021-10-08 17:12:44,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1108 to 496. [2021-10-08 17:12:44,735 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) [2021-10-08 17:12:44,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 1899 transitions. [2021-10-08 17:12:44,736 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 1899 transitions. Word has length 20 [2021-10-08 17:12:44,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:12:44,736 INFO L470 AbstractCegarLoop]: Abstraction has 496 states and 1899 transitions. [2021-10-08 17:12:44,737 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) [2021-10-08 17:12:44,737 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 1899 transitions. [2021-10-08 17:12:44,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:12:44,738 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:12:44,738 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] [2021-10-08 17:12:44,750 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (55)] Ended with exit code 0 [2021-10-08 17:12:44,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:12:44,939 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)] === [2021-10-08 17:12:44,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:12:44,939 INFO L82 PathProgramCache]: Analyzing trace with hash 28342757, now seen corresponding path program 19 times [2021-10-08 17:12:44,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:12:44,940 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [857106076] [2021-10-08 17:12:44,941 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 17:12:44,941 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:12:44,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:12:44,943 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:12:44,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (56)] Waiting until timeout for monitored process [2021-10-08 17:12:45,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:12:45,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:12:45,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:12:45,663 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:12:45,663 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:12:46,258 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:12:46,258 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:12:46,258 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [857106076] [2021-10-08 17:12:46,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [857106076] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-08 17:12:46,259 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 17:12:46,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 11 [2021-10-08 17:12:46,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155050328] [2021-10-08 17:12:46,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-08 17:12:46,260 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:12:46,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-08 17:12:46,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-10-08 17:12:46,260 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) [2021-10-08 17:12:46,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:12:46,643 INFO L93 Difference]: Finished difference Result 628 states and 2293 transitions. [2021-10-08 17:12:46,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 17:12:46,644 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 [2021-10-08 17:12:46,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:12:46,646 INFO L225 Difference]: With dead ends: 628 [2021-10-08 17:12:46,647 INFO L226 Difference]: Without dead ends: 628 [2021-10-08 17:12:46,647 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 564.0ms TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2021-10-08 17:12:46,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2021-10-08 17:12:46,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 498. [2021-10-08 17:12:46,663 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) [2021-10-08 17:12:46,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 1906 transitions. [2021-10-08 17:12:46,665 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 1906 transitions. Word has length 20 [2021-10-08 17:12:46,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:12:46,666 INFO L470 AbstractCegarLoop]: Abstraction has 498 states and 1906 transitions. [2021-10-08 17:12:46,666 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) [2021-10-08 17:12:46,666 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 1906 transitions. [2021-10-08 17:12:46,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:12:46,667 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:12:46,667 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] [2021-10-08 17:12:46,678 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (56)] Ended with exit code 0 [2021-10-08 17:12:46,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:12:46,868 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)] === [2021-10-08 17:12:46,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:12:46,868 INFO L82 PathProgramCache]: Analyzing trace with hash -1959158933, now seen corresponding path program 21 times [2021-10-08 17:12:46,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:12:46,869 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1858606280] [2021-10-08 17:12:46,869 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:12:46,869 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:12:46,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:12:46,870 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:12:46,874 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (57)] Waiting until timeout for monitored process [2021-10-08 17:12:47,478 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-08 17:12:47,478 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:12:47,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:12:47,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:12:47,720 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:12:47,721 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:12:48,243 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:12:48,244 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:12:48,244 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1858606280] [2021-10-08 17:12:48,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1858606280] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-08 17:12:48,244 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 17:12:48,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-10-08 17:12:48,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846822417] [2021-10-08 17:12:48,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-08 17:12:48,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:12:48,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-08 17:12:48,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-08 17:12:48,246 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) [2021-10-08 17:12:48,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:12:48,716 INFO L93 Difference]: Finished difference Result 624 states and 2281 transitions. [2021-10-08 17:12:48,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-08 17:12:48,717 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 [2021-10-08 17:12:48,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:12:48,718 INFO L225 Difference]: With dead ends: 624 [2021-10-08 17:12:48,719 INFO L226 Difference]: Without dead ends: 622 [2021-10-08 17:12:48,719 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 593.9ms TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2021-10-08 17:12:48,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2021-10-08 17:12:48,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 498. [2021-10-08 17:12:48,740 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) [2021-10-08 17:12:48,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 1904 transitions. [2021-10-08 17:12:48,743 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 1904 transitions. Word has length 20 [2021-10-08 17:12:48,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:12:48,743 INFO L470 AbstractCegarLoop]: Abstraction has 498 states and 1904 transitions. [2021-10-08 17:12:48,743 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) [2021-10-08 17:12:48,743 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 1904 transitions. [2021-10-08 17:12:48,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:12:48,745 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:12:48,745 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] [2021-10-08 17:12:48,761 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (57)] Forceful destruction successful, exit code 0 [2021-10-08 17:12:48,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:12:48,961 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)] === [2021-10-08 17:12:48,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:12:48,961 INFO L82 PathProgramCache]: Analyzing trace with hash -651715613, now seen corresponding path program 22 times [2021-10-08 17:12:48,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:12:48,962 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1466934297] [2021-10-08 17:12:48,962 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 17:12:48,962 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:12:48,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:12:48,966 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:12:48,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (58)] Waiting until timeout for monitored process [2021-10-08 17:12:49,514 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 17:12:49,514 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:12:49,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:12:49,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:12:49,788 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:12:49,789 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:12:50,397 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:12:50,398 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:12:50,398 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1466934297] [2021-10-08 17:12:50,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1466934297] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:12:50,398 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:12:50,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2021-10-08 17:12:50,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218874123] [2021-10-08 17:12:50,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 17:12:50,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:12:50,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 17:12:50,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-10-08 17:12:50,401 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) [2021-10-08 17:12:58,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:12:58,150 INFO L93 Difference]: Finished difference Result 902 states and 3019 transitions. [2021-10-08 17:12:58,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-08 17:12:58,152 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 [2021-10-08 17:12:58,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:12:58,156 INFO L225 Difference]: With dead ends: 902 [2021-10-08 17:12:58,156 INFO L226 Difference]: Without dead ends: 902 [2021-10-08 17:12:58,156 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 1313.5ms TimeCoverageRelationStatistics Valid=142, Invalid=410, Unknown=0, NotChecked=0, Total=552 [2021-10-08 17:12:58,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 902 states. [2021-10-08 17:12:58,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 902 to 498. [2021-10-08 17:12:58,169 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) [2021-10-08 17:12:58,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 1894 transitions. [2021-10-08 17:12:58,171 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 1894 transitions. Word has length 20 [2021-10-08 17:12:58,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:12:58,171 INFO L470 AbstractCegarLoop]: Abstraction has 498 states and 1894 transitions. [2021-10-08 17:12:58,171 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) [2021-10-08 17:12:58,171 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 1894 transitions. [2021-10-08 17:12:58,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:12:58,173 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:12:58,173 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] [2021-10-08 17:12:58,187 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (58)] Ended with exit code 0 [2021-10-08 17:12:58,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:12:58,389 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)] === [2021-10-08 17:12:58,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:12:58,389 INFO L82 PathProgramCache]: Analyzing trace with hash -1930147481, now seen corresponding path program 23 times [2021-10-08 17:12:58,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:12:58,390 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1492081148] [2021-10-08 17:12:58,390 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 17:12:58,390 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:12:58,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:12:58,395 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:12:58,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (59)] Waiting until timeout for monitored process [2021-10-08 17:12:58,955 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:12:58,955 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:12:58,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:12:58,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:12:59,219 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:12:59,219 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:12:59,674 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:12:59,675 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:12:59,675 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1492081148] [2021-10-08 17:12:59,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1492081148] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:12:59,675 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:12:59,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2021-10-08 17:12:59,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944473105] [2021-10-08 17:12:59,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 17:12:59,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:12:59,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 17:12:59,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-10-08 17:12:59,676 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) [2021-10-08 17:13:07,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:13:07,518 INFO L93 Difference]: Finished difference Result 1312 states and 4236 transitions. [2021-10-08 17:13:07,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-08 17:13:07,520 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 [2021-10-08 17:13:07,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:13:07,523 INFO L225 Difference]: With dead ends: 1312 [2021-10-08 17:13:07,523 INFO L226 Difference]: Without dead ends: 1312 [2021-10-08 17:13:07,523 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 2044.0ms TimeCoverageRelationStatistics Valid=265, Invalid=857, Unknown=0, NotChecked=0, Total=1122 [2021-10-08 17:13:07,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1312 states. [2021-10-08 17:13:07,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1312 to 502. [2021-10-08 17:13:07,540 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) [2021-10-08 17:13:07,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 1905 transitions. [2021-10-08 17:13:07,541 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 1905 transitions. Word has length 20 [2021-10-08 17:13:07,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:13:07,542 INFO L470 AbstractCegarLoop]: Abstraction has 502 states and 1905 transitions. [2021-10-08 17:13:07,542 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) [2021-10-08 17:13:07,542 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 1905 transitions. [2021-10-08 17:13:07,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:13:07,543 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:13:07,543 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] [2021-10-08 17:13:07,554 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (59)] Forceful destruction successful, exit code 0 [2021-10-08 17:13:07,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:13:07,744 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)] === [2021-10-08 17:13:07,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:13:07,745 INFO L82 PathProgramCache]: Analyzing trace with hash -967757949, now seen corresponding path program 24 times [2021-10-08 17:13:07,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:13:07,745 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [151894944] [2021-10-08 17:13:07,746 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 17:13:07,746 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:13:07,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:13:07,748 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:13:07,751 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (60)] Waiting until timeout for monitored process [2021-10-08 17:13:08,356 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-08 17:13:08,356 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:13:08,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:13:08,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:13:08,662 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:13:08,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:13:10,137 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:13:10,138 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:13:10,138 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [151894944] [2021-10-08 17:13:10,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [151894944] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:13:10,138 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:13:10,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2021-10-08 17:13:10,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987494675] [2021-10-08 17:13:10,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 17:13:10,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:13:10,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 17:13:10,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-10-08 17:13:10,140 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) [2021-10-08 17:13:19,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:13:19,090 INFO L93 Difference]: Finished difference Result 1246 states and 4139 transitions. [2021-10-08 17:13:19,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-08 17:13:19,092 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 [2021-10-08 17:13:19,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:13:19,096 INFO L225 Difference]: With dead ends: 1246 [2021-10-08 17:13:19,096 INFO L226 Difference]: Without dead ends: 1246 [2021-10-08 17:13:19,096 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 4907.0ms TimeCoverageRelationStatistics Valid=175, Invalid=425, Unknown=0, NotChecked=0, Total=600 [2021-10-08 17:13:19,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1246 states. [2021-10-08 17:13:19,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1246 to 532. [2021-10-08 17:13:19,113 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) [2021-10-08 17:13:19,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 2046 transitions. [2021-10-08 17:13:19,116 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 2046 transitions. Word has length 20 [2021-10-08 17:13:19,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:13:19,117 INFO L470 AbstractCegarLoop]: Abstraction has 532 states and 2046 transitions. [2021-10-08 17:13:19,117 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) [2021-10-08 17:13:19,117 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 2046 transitions. [2021-10-08 17:13:19,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:13:19,119 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:13:19,119 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] [2021-10-08 17:13:19,134 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (60)] Forceful destruction successful, exit code 0 [2021-10-08 17:13:19,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:13:19,324 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)] === [2021-10-08 17:13:19,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:13:19,324 INFO L82 PathProgramCache]: Analyzing trace with hash -1824848541, now seen corresponding path program 25 times [2021-10-08 17:13:19,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:13:19,325 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [509510594] [2021-10-08 17:13:19,325 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 17:13:19,325 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:13:19,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:13:19,327 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:13:19,330 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (61)] Waiting until timeout for monitored process [2021-10-08 17:13:19,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:13:19,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:13:19,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:13:20,205 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:13:20,206 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:13:21,785 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:13:21,786 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:13:21,786 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [509510594] [2021-10-08 17:13:21,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [509510594] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:13:21,787 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:13:21,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2021-10-08 17:13:21,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115180527] [2021-10-08 17:13:21,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 17:13:21,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:13:21,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 17:13:21,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-10-08 17:13:21,789 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) [2021-10-08 17:13:29,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:13:29,257 INFO L93 Difference]: Finished difference Result 1272 states and 4205 transitions. [2021-10-08 17:13:29,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-08 17:13:29,259 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 [2021-10-08 17:13:29,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:13:29,263 INFO L225 Difference]: With dead ends: 1272 [2021-10-08 17:13:29,263 INFO L226 Difference]: Without dead ends: 1272 [2021-10-08 17:13:29,263 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 4706.0ms TimeCoverageRelationStatistics Valid=174, Invalid=426, Unknown=0, NotChecked=0, Total=600 [2021-10-08 17:13:29,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1272 states. [2021-10-08 17:13:29,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1272 to 524. [2021-10-08 17:13:29,284 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) [2021-10-08 17:13:29,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 2001 transitions. [2021-10-08 17:13:29,286 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 2001 transitions. Word has length 20 [2021-10-08 17:13:29,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:13:29,287 INFO L470 AbstractCegarLoop]: Abstraction has 524 states and 2001 transitions. [2021-10-08 17:13:29,288 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) [2021-10-08 17:13:29,288 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 2001 transitions. [2021-10-08 17:13:29,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:13:29,290 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:13:29,290 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] [2021-10-08 17:13:29,302 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (61)] Ended with exit code 0 [2021-10-08 17:13:29,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:13:29,491 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)] === [2021-10-08 17:13:29,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:13:29,492 INFO L82 PathProgramCache]: Analyzing trace with hash -409179649, now seen corresponding path program 26 times [2021-10-08 17:13:29,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:13:29,492 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [511902145] [2021-10-08 17:13:29,492 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:13:29,493 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:13:29,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:13:29,494 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:13:29,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (62)] Waiting until timeout for monitored process [2021-10-08 17:13:30,147 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:13:30,147 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:13:30,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:13:30,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:13:30,466 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:13:30,467 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:13:31,016 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:13:31,016 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:13:31,016 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [511902145] [2021-10-08 17:13:31,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [511902145] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:13:31,017 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:13:31,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2021-10-08 17:13:31,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191685111] [2021-10-08 17:13:31,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 17:13:31,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:13:31,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 17:13:31,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-10-08 17:13:31,018 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) [2021-10-08 17:13:36,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:13:36,653 INFO L93 Difference]: Finished difference Result 1576 states and 5117 transitions. [2021-10-08 17:13:36,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-08 17:13:36,655 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 [2021-10-08 17:13:36,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:13:36,659 INFO L225 Difference]: With dead ends: 1576 [2021-10-08 17:13:36,659 INFO L226 Difference]: Without dead ends: 1576 [2021-10-08 17:13:36,659 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 2507.5ms TimeCoverageRelationStatistics Valid=279, Invalid=843, Unknown=0, NotChecked=0, Total=1122 [2021-10-08 17:13:36,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1576 states. [2021-10-08 17:13:36,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1576 to 510. [2021-10-08 17:13:36,678 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) [2021-10-08 17:13:36,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 1946 transitions. [2021-10-08 17:13:36,680 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 1946 transitions. Word has length 20 [2021-10-08 17:13:36,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:13:36,680 INFO L470 AbstractCegarLoop]: Abstraction has 510 states and 1946 transitions. [2021-10-08 17:13:36,680 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) [2021-10-08 17:13:36,680 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 1946 transitions. [2021-10-08 17:13:36,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:13:36,681 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:13:36,682 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:13:36,693 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (62)] Ended with exit code 0 [2021-10-08 17:13:36,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:13:36,882 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)] === [2021-10-08 17:13:36,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:13:36,883 INFO L82 PathProgramCache]: Analyzing trace with hash 868128645, now seen corresponding path program 20 times [2021-10-08 17:13:36,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:13:36,884 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2097030584] [2021-10-08 17:13:36,884 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:13:36,884 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:13:36,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:13:36,886 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:13:36,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (63)] Waiting until timeout for monitored process [2021-10-08 17:13:37,510 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:13:37,510 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:13:37,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:13:37,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:13:37,857 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:13:37,857 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:13:38,171 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:13:38,171 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:13:38,171 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2097030584] [2021-10-08 17:13:38,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2097030584] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-08 17:13:38,172 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 17:13:38,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2021-10-08 17:13:38,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141931909] [2021-10-08 17:13:38,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-08 17:13:38,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:13:38,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-08 17:13:38,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2021-10-08 17:13:38,174 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) [2021-10-08 17:13:38,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:13:38,423 INFO L93 Difference]: Finished difference Result 786 states and 2835 transitions. [2021-10-08 17:13:38,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 17:13:38,425 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 [2021-10-08 17:13:38,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:13:38,427 INFO L225 Difference]: With dead ends: 786 [2021-10-08 17:13:38,427 INFO L226 Difference]: Without dead ends: 786 [2021-10-08 17:13:38,427 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 389.6ms TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2021-10-08 17:13:38,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 786 states. [2021-10-08 17:13:38,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 786 to 510. [2021-10-08 17:13:38,441 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) [2021-10-08 17:13:38,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 1946 transitions. [2021-10-08 17:13:38,443 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 1946 transitions. Word has length 20 [2021-10-08 17:13:38,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:13:38,443 INFO L470 AbstractCegarLoop]: Abstraction has 510 states and 1946 transitions. [2021-10-08 17:13:38,443 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) [2021-10-08 17:13:38,443 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 1946 transitions. [2021-10-08 17:13:38,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:13:38,444 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:13:38,445 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] [2021-10-08 17:13:38,456 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (63)] Ended with exit code 0 [2021-10-08 17:13:38,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:13:38,646 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)] === [2021-10-08 17:13:38,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:13:38,647 INFO L82 PathProgramCache]: Analyzing trace with hash 1854257419, now seen corresponding path program 21 times [2021-10-08 17:13:38,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:13:38,647 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2087638881] [2021-10-08 17:13:38,647 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:13:38,648 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:13:38,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:13:38,649 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:13:38,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (64)] Waiting until timeout for monitored process [2021-10-08 17:13:39,315 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-08 17:13:39,315 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:13:39,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:13:39,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:13:39,653 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:13:39,653 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:13:40,024 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:13:40,024 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:13:40,025 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2087638881] [2021-10-08 17:13:40,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2087638881] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-08 17:13:40,025 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 17:13:40,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2021-10-08 17:13:40,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711140987] [2021-10-08 17:13:40,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-08 17:13:40,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:13:40,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-08 17:13:40,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-10-08 17:13:40,027 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) [2021-10-08 17:13:40,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:13:40,441 INFO L93 Difference]: Finished difference Result 808 states and 2890 transitions. [2021-10-08 17:13:40,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 17:13:40,442 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 [2021-10-08 17:13:40,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:13:40,445 INFO L225 Difference]: With dead ends: 808 [2021-10-08 17:13:40,445 INFO L226 Difference]: Without dead ends: 808 [2021-10-08 17:13:40,445 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 413.1ms TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-10-08 17:13:40,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2021-10-08 17:13:40,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 514. [2021-10-08 17:13:40,457 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) [2021-10-08 17:13:40,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 1965 transitions. [2021-10-08 17:13:40,458 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 1965 transitions. Word has length 20 [2021-10-08 17:13:40,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:13:40,458 INFO L470 AbstractCegarLoop]: Abstraction has 514 states and 1965 transitions. [2021-10-08 17:13:40,459 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) [2021-10-08 17:13:40,459 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 1965 transitions. [2021-10-08 17:13:40,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:13:40,460 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:13:40,460 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] [2021-10-08 17:13:40,471 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (64)] Ended with exit code 0 [2021-10-08 17:13:40,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:13:40,661 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)] === [2021-10-08 17:13:40,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:13:40,661 INFO L82 PathProgramCache]: Analyzing trace with hash 1338575209, now seen corresponding path program 22 times [2021-10-08 17:13:40,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:13:40,662 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2042303815] [2021-10-08 17:13:40,662 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 17:13:40,662 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:13:40,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:13:40,664 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:13:40,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (65)] Waiting until timeout for monitored process [2021-10-08 17:13:41,237 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 17:13:41,237 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:13:41,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:13:41,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:13:41,506 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:13:41,506 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:13:41,884 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:13:41,884 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:13:41,885 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2042303815] [2021-10-08 17:13:41,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2042303815] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:13:41,885 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:13:41,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-10-08 17:13:41,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969847892] [2021-10-08 17:13:41,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 17:13:41,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:13:41,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 17:13:41,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-10-08 17:13:41,887 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) [2021-10-08 17:13:43,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:13:43,435 INFO L93 Difference]: Finished difference Result 1114 states and 3871 transitions. [2021-10-08 17:13:43,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-08 17:13:43,436 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 [2021-10-08 17:13:43,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:13:43,439 INFO L225 Difference]: With dead ends: 1114 [2021-10-08 17:13:43,439 INFO L226 Difference]: Without dead ends: 1108 [2021-10-08 17:13:43,440 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 654.5ms TimeCoverageRelationStatistics Valid=108, Invalid=234, Unknown=0, NotChecked=0, Total=342 [2021-10-08 17:13:43,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1108 states. [2021-10-08 17:13:43,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1108 to 524. [2021-10-08 17:13:43,464 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) [2021-10-08 17:13:43,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 2013 transitions. [2021-10-08 17:13:43,468 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 2013 transitions. Word has length 20 [2021-10-08 17:13:43,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:13:43,468 INFO L470 AbstractCegarLoop]: Abstraction has 524 states and 2013 transitions. [2021-10-08 17:13:43,468 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) [2021-10-08 17:13:43,468 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 2013 transitions. [2021-10-08 17:13:43,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:13:43,470 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:13:43,470 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] [2021-10-08 17:13:43,482 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (65)] Forceful destruction successful, exit code 0 [2021-10-08 17:13:43,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:13:43,671 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)] === [2021-10-08 17:13:43,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:13:43,672 INFO L82 PathProgramCache]: Analyzing trace with hash -1289050483, now seen corresponding path program 23 times [2021-10-08 17:13:43,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:13:43,672 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1602914562] [2021-10-08 17:13:43,673 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 17:13:43,673 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:13:43,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:13:43,674 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:13:43,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (66)] Waiting until timeout for monitored process [2021-10-08 17:13:44,288 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:13:44,288 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:13:44,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:13:44,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:13:44,680 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:13:44,680 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:13:45,005 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:13:45,005 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:13:45,005 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1602914562] [2021-10-08 17:13:45,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1602914562] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-08 17:13:45,006 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 17:13:45,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2021-10-08 17:13:45,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936182467] [2021-10-08 17:13:45,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-08 17:13:45,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:13:45,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-08 17:13:45,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2021-10-08 17:13:45,008 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) [2021-10-08 17:13:45,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:13:45,381 INFO L93 Difference]: Finished difference Result 804 states and 2925 transitions. [2021-10-08 17:13:45,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 17:13:45,382 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 [2021-10-08 17:13:45,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:13:45,384 INFO L225 Difference]: With dead ends: 804 [2021-10-08 17:13:45,385 INFO L226 Difference]: Without dead ends: 804 [2021-10-08 17:13:45,385 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 438.4ms TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2021-10-08 17:13:45,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2021-10-08 17:13:45,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 508. [2021-10-08 17:13:45,399 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) [2021-10-08 17:13:45,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 1952 transitions. [2021-10-08 17:13:45,402 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 1952 transitions. Word has length 20 [2021-10-08 17:13:45,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:13:45,402 INFO L470 AbstractCegarLoop]: Abstraction has 508 states and 1952 transitions. [2021-10-08 17:13:45,403 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) [2021-10-08 17:13:45,403 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 1952 transitions. [2021-10-08 17:13:45,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:13:45,405 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:13:45,405 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] [2021-10-08 17:13:45,423 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (66)] Forceful destruction successful, exit code 0 [2021-10-08 17:13:45,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:13:45,620 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)] === [2021-10-08 17:13:45,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:13:45,620 INFO L82 PathProgramCache]: Analyzing trace with hash 2062351461, now seen corresponding path program 24 times [2021-10-08 17:13:45,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:13:45,621 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1535103454] [2021-10-08 17:13:45,621 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 17:13:45,622 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:13:45,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:13:45,623 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:13:45,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (67)] Waiting until timeout for monitored process [2021-10-08 17:13:46,331 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-08 17:13:46,331 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:13:46,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:13:46,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:13:46,754 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:13:46,754 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:13:47,008 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:13:47,008 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:13:47,009 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1535103454] [2021-10-08 17:13:47,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1535103454] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-08 17:13:47,009 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 17:13:47,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2021-10-08 17:13:47,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397973978] [2021-10-08 17:13:47,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-08 17:13:47,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:13:47,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-08 17:13:47,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-10-08 17:13:47,011 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) [2021-10-08 17:13:47,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:13:47,354 INFO L93 Difference]: Finished difference Result 760 states and 2764 transitions. [2021-10-08 17:13:47,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 17:13:47,355 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 [2021-10-08 17:13:47,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:13:47,357 INFO L225 Difference]: With dead ends: 760 [2021-10-08 17:13:47,357 INFO L226 Difference]: Without dead ends: 760 [2021-10-08 17:13:47,357 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 388.2ms TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-10-08 17:13:47,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2021-10-08 17:13:47,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 514. [2021-10-08 17:13:47,368 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) [2021-10-08 17:13:47,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 1983 transitions. [2021-10-08 17:13:47,369 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 1983 transitions. Word has length 20 [2021-10-08 17:13:47,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:13:47,370 INFO L470 AbstractCegarLoop]: Abstraction has 514 states and 1983 transitions. [2021-10-08 17:13:47,370 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) [2021-10-08 17:13:47,370 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 1983 transitions. [2021-10-08 17:13:47,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:13:47,371 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:13:47,371 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] [2021-10-08 17:13:47,383 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (67)] Forceful destruction successful, exit code 0 [2021-10-08 17:13:47,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:13:47,572 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)] === [2021-10-08 17:13:47,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:13:47,573 INFO L82 PathProgramCache]: Analyzing trace with hash 2076622965, now seen corresponding path program 25 times [2021-10-08 17:13:47,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:13:47,574 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [836976318] [2021-10-08 17:13:47,574 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 17:13:47,575 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:13:47,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:13:47,575 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:13:47,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (68)] Waiting until timeout for monitored process [2021-10-08 17:13:48,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:13:48,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:13:48,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:13:48,540 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:13:48,540 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:13:48,790 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:13:48,791 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:13:48,791 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [836976318] [2021-10-08 17:13:48,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [836976318] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-08 17:13:48,791 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 17:13:48,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2021-10-08 17:13:48,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321065770] [2021-10-08 17:13:48,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-08 17:13:48,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:13:48,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-08 17:13:48,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-10-08 17:13:48,793 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) [2021-10-08 17:13:49,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:13:49,104 INFO L93 Difference]: Finished difference Result 764 states and 2774 transitions. [2021-10-08 17:13:49,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 17:13:49,106 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 [2021-10-08 17:13:49,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:13:49,108 INFO L225 Difference]: With dead ends: 764 [2021-10-08 17:13:49,108 INFO L226 Difference]: Without dead ends: 764 [2021-10-08 17:13:49,108 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 384.1ms TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-10-08 17:13:49,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2021-10-08 17:13:49,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 512. [2021-10-08 17:13:49,118 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) [2021-10-08 17:13:49,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 1970 transitions. [2021-10-08 17:13:49,120 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 1970 transitions. Word has length 20 [2021-10-08 17:13:49,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:13:49,120 INFO L470 AbstractCegarLoop]: Abstraction has 512 states and 1970 transitions. [2021-10-08 17:13:49,120 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) [2021-10-08 17:13:49,120 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 1970 transitions. [2021-10-08 17:13:49,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:13:49,122 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:13:49,122 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] [2021-10-08 17:13:49,133 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (68)] Ended with exit code 0 [2021-10-08 17:13:49,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:13:49,323 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)] === [2021-10-08 17:13:49,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:13:49,323 INFO L82 PathProgramCache]: Analyzing trace with hash 726866433, now seen corresponding path program 26 times [2021-10-08 17:13:49,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:13:49,324 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [96162534] [2021-10-08 17:13:49,324 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:13:49,325 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:13:49,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:13:49,326 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:13:49,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (69)] Waiting until timeout for monitored process [2021-10-08 17:13:50,044 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:13:50,045 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:13:50,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:13:50,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:13:50,427 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:13:50,428 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:13:50,707 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:13:50,707 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:13:50,707 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [96162534] [2021-10-08 17:13:50,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [96162534] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-08 17:13:50,708 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 17:13:50,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2021-10-08 17:13:50,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872780055] [2021-10-08 17:13:50,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-08 17:13:50,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:13:50,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-08 17:13:50,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-10-08 17:13:50,709 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) [2021-10-08 17:13:50,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:13:50,963 INFO L93 Difference]: Finished difference Result 684 states and 2500 transitions. [2021-10-08 17:13:50,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 17:13:50,965 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 [2021-10-08 17:13:50,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:13:50,968 INFO L225 Difference]: With dead ends: 684 [2021-10-08 17:13:50,968 INFO L226 Difference]: Without dead ends: 684 [2021-10-08 17:13:50,969 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 402.0ms TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-10-08 17:13:50,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2021-10-08 17:13:50,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 510. [2021-10-08 17:13:50,985 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) [2021-10-08 17:13:50,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 1965 transitions. [2021-10-08 17:13:50,988 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 1965 transitions. Word has length 20 [2021-10-08 17:13:50,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:13:50,988 INFO L470 AbstractCegarLoop]: Abstraction has 510 states and 1965 transitions. [2021-10-08 17:13:50,988 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) [2021-10-08 17:13:50,988 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 1965 transitions. [2021-10-08 17:13:50,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:13:50,991 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:13:50,991 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] [2021-10-08 17:13:51,009 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (69)] Forceful destruction successful, exit code 0 [2021-10-08 17:13:51,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:13:51,205 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)] === [2021-10-08 17:13:51,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:13:51,205 INFO L82 PathProgramCache]: Analyzing trace with hash 1598635075, now seen corresponding path program 9 times [2021-10-08 17:13:51,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:13:51,206 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1002041555] [2021-10-08 17:13:51,206 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:13:51,206 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:13:51,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:13:51,207 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:13:51,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (70)] Waiting until timeout for monitored process [2021-10-08 17:13:51,932 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-08 17:13:51,932 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:13:51,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:13:51,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:13:52,149 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:13:52,149 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:13:52,759 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:13:52,759 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:13:52,760 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1002041555] [2021-10-08 17:13:52,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1002041555] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-08 17:13:52,760 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 17:13:52,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 12 [2021-10-08 17:13:52,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076653658] [2021-10-08 17:13:52,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-08 17:13:52,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:13:52,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-08 17:13:52,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-10-08 17:13:52,761 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) [2021-10-08 17:13:53,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:13:53,058 INFO L93 Difference]: Finished difference Result 690 states and 2481 transitions. [2021-10-08 17:13:53,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 17:13:53,059 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 [2021-10-08 17:13:53,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:13:53,061 INFO L225 Difference]: With dead ends: 690 [2021-10-08 17:13:53,061 INFO L226 Difference]: Without dead ends: 678 [2021-10-08 17:13:53,062 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 595.7ms TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2021-10-08 17:13:53,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 678 states. [2021-10-08 17:13:53,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 678 to 524. [2021-10-08 17:13:53,072 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) [2021-10-08 17:13:53,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 2024 transitions. [2021-10-08 17:13:53,075 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 2024 transitions. Word has length 20 [2021-10-08 17:13:53,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:13:53,075 INFO L470 AbstractCegarLoop]: Abstraction has 524 states and 2024 transitions. [2021-10-08 17:13:53,075 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) [2021-10-08 17:13:53,075 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 2024 transitions. [2021-10-08 17:13:53,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:13:53,077 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:13:53,077 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] [2021-10-08 17:13:53,090 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (70)] Ended with exit code 0 [2021-10-08 17:13:53,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:13:53,278 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)] === [2021-10-08 17:13:53,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:13:53,286 INFO L82 PathProgramCache]: Analyzing trace with hash 2102666705, now seen corresponding path program 10 times [2021-10-08 17:13:53,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:13:53,286 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [511973886] [2021-10-08 17:13:53,286 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 17:13:53,287 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:13:53,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:13:53,287 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:13:53,289 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (71)] Waiting until timeout for monitored process [2021-10-08 17:13:53,907 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 17:13:53,907 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:13:53,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:13:53,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:13:54,136 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:13:54,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:13:55,032 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:13:55,032 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:13:55,033 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [511973886] [2021-10-08 17:13:55,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [511973886] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-08 17:13:55,033 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 17:13:55,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 12 [2021-10-08 17:13:55,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300879755] [2021-10-08 17:13:55,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-08 17:13:55,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:13:55,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-08 17:13:55,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-10-08 17:13:55,034 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) [2021-10-08 17:13:55,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:13:55,361 INFO L93 Difference]: Finished difference Result 700 states and 2511 transitions. [2021-10-08 17:13:55,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 17:13:55,363 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 [2021-10-08 17:13:55,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:13:55,365 INFO L225 Difference]: With dead ends: 700 [2021-10-08 17:13:55,366 INFO L226 Difference]: Without dead ends: 700 [2021-10-08 17:13:55,366 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 848.7ms TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2021-10-08 17:13:55,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2021-10-08 17:13:55,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 520. [2021-10-08 17:13:55,381 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) [2021-10-08 17:13:55,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 2013 transitions. [2021-10-08 17:13:55,384 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 2013 transitions. Word has length 20 [2021-10-08 17:13:55,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:13:55,384 INFO L470 AbstractCegarLoop]: Abstraction has 520 states and 2013 transitions. [2021-10-08 17:13:55,385 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) [2021-10-08 17:13:55,385 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 2013 transitions. [2021-10-08 17:13:55,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:13:55,386 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:13:55,387 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] [2021-10-08 17:13:55,401 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (71)] Ended with exit code 0 [2021-10-08 17:13:55,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:13:55,598 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)] === [2021-10-08 17:13:55,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:13:55,598 INFO L82 PathProgramCache]: Analyzing trace with hash 1727298099, now seen corresponding path program 11 times [2021-10-08 17:13:55,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:13:55,599 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1913519838] [2021-10-08 17:13:55,599 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 17:13:55,600 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:13:55,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:13:55,601 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:13:55,602 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (72)] Waiting until timeout for monitored process [2021-10-08 17:13:56,225 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:13:56,226 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:13:56,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:13:56,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:13:56,493 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:13:56,494 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:13:56,968 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:13:56,969 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:13:56,969 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1913519838] [2021-10-08 17:13:56,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1913519838] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-08 17:13:56,969 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 17:13:56,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 12 [2021-10-08 17:13:56,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728237730] [2021-10-08 17:13:56,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-08 17:13:56,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:13:56,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-08 17:13:56,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-10-08 17:13:56,971 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) [2021-10-08 17:13:57,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:13:57,447 INFO L93 Difference]: Finished difference Result 716 states and 2527 transitions. [2021-10-08 17:13:57,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 17:13:57,448 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 [2021-10-08 17:13:57,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:13:57,450 INFO L225 Difference]: With dead ends: 716 [2021-10-08 17:13:57,450 INFO L226 Difference]: Without dead ends: 704 [2021-10-08 17:13:57,450 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 523.5ms TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2021-10-08 17:13:57,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2021-10-08 17:13:57,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 526. [2021-10-08 17:13:57,468 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) [2021-10-08 17:13:57,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 2034 transitions. [2021-10-08 17:13:57,471 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 2034 transitions. Word has length 20 [2021-10-08 17:13:57,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:13:57,471 INFO L470 AbstractCegarLoop]: Abstraction has 526 states and 2034 transitions. [2021-10-08 17:13:57,472 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) [2021-10-08 17:13:57,472 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 2034 transitions. [2021-10-08 17:13:57,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:13:57,474 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:13:57,474 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] [2021-10-08 17:13:57,491 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (72)] Forceful destruction successful, exit code 0 [2021-10-08 17:13:57,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:13:57,691 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)] === [2021-10-08 17:13:57,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:13:57,691 INFO L82 PathProgramCache]: Analyzing trace with hash -465573117, now seen corresponding path program 27 times [2021-10-08 17:13:57,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:13:57,692 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [633273803] [2021-10-08 17:13:57,692 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:13:57,692 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:13:57,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:13:57,694 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:13:57,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (73)] Waiting until timeout for monitored process [2021-10-08 17:13:58,448 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-08 17:13:58,448 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:13:58,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:13:58,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:13:58,750 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:13:58,751 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:13:59,180 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:13:59,181 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:13:59,181 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [633273803] [2021-10-08 17:13:59,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [633273803] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:13:59,181 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:13:59,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-10-08 17:13:59,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210717799] [2021-10-08 17:13:59,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 17:13:59,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:13:59,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 17:13:59,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-10-08 17:13:59,183 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) [2021-10-08 17:14:01,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:14:01,127 INFO L93 Difference]: Finished difference Result 1030 states and 3487 transitions. [2021-10-08 17:14:01,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-08 17:14:01,128 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 [2021-10-08 17:14:01,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:14:01,131 INFO L225 Difference]: With dead ends: 1030 [2021-10-08 17:14:01,131 INFO L226 Difference]: Without dead ends: 1030 [2021-10-08 17:14:01,131 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 1162.0ms TimeCoverageRelationStatistics Valid=208, Invalid=494, Unknown=0, NotChecked=0, Total=702 [2021-10-08 17:14:01,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1030 states. [2021-10-08 17:14:01,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1030 to 528. [2021-10-08 17:14:01,144 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) [2021-10-08 17:14:01,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 2039 transitions. [2021-10-08 17:14:01,146 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 2039 transitions. Word has length 20 [2021-10-08 17:14:01,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:14:01,146 INFO L470 AbstractCegarLoop]: Abstraction has 528 states and 2039 transitions. [2021-10-08 17:14:01,146 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) [2021-10-08 17:14:01,146 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 2039 transitions. [2021-10-08 17:14:01,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:14:01,148 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:14:01,148 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] [2021-10-08 17:14:01,159 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (73)] Ended with exit code 0 [2021-10-08 17:14:01,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:14:01,349 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)] === [2021-10-08 17:14:01,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:14:01,349 INFO L82 PathProgramCache]: Analyzing trace with hash -225025469, now seen corresponding path program 28 times [2021-10-08 17:14:01,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:14:01,350 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [389300222] [2021-10-08 17:14:01,350 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 17:14:01,351 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:14:01,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:14:01,352 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:14:01,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (74)] Waiting until timeout for monitored process [2021-10-08 17:14:01,993 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 17:14:01,993 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:14:01,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:14:02,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:14:02,215 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:14:02,215 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:14:02,746 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:14:02,746 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:14:02,746 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [389300222] [2021-10-08 17:14:02,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [389300222] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-08 17:14:02,747 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 17:14:02,747 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 12 [2021-10-08 17:14:02,747 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094850429] [2021-10-08 17:14:02,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-08 17:14:02,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:14:02,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-08 17:14:02,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-10-08 17:14:02,748 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) [2021-10-08 17:14:03,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:14:03,320 INFO L93 Difference]: Finished difference Result 734 states and 2602 transitions. [2021-10-08 17:14:03,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-08 17:14:03,321 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 [2021-10-08 17:14:03,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:14:03,323 INFO L225 Difference]: With dead ends: 734 [2021-10-08 17:14:03,323 INFO L226 Difference]: Without dead ends: 732 [2021-10-08 17:14:03,323 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 586.7ms TimeCoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2021-10-08 17:14:03,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2021-10-08 17:14:03,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 530. [2021-10-08 17:14:03,334 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) [2021-10-08 17:14:03,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 2044 transitions. [2021-10-08 17:14:03,335 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 2044 transitions. Word has length 20 [2021-10-08 17:14:03,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:14:03,336 INFO L470 AbstractCegarLoop]: Abstraction has 530 states and 2044 transitions. [2021-10-08 17:14:03,336 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) [2021-10-08 17:14:03,336 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 2044 transitions. [2021-10-08 17:14:03,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:14:03,337 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:14:03,337 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] [2021-10-08 17:14:03,350 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (74)] Forceful destruction successful, exit code 0 [2021-10-08 17:14:03,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 74 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:14:03,538 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)] === [2021-10-08 17:14:03,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:14:03,539 INFO L82 PathProgramCache]: Analyzing trace with hash 1769851099, now seen corresponding path program 29 times [2021-10-08 17:14:03,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:14:03,539 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [529309515] [2021-10-08 17:14:03,540 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 17:14:03,540 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:14:03,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:14:03,541 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:14:03,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (75)] Waiting until timeout for monitored process [2021-10-08 17:14:04,227 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:14:04,227 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:14:04,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:14:04,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:14:04,544 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:14:04,544 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:14:05,052 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:14:05,053 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:14:05,053 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [529309515] [2021-10-08 17:14:05,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [529309515] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:14:05,053 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:14:05,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-10-08 17:14:05,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133009974] [2021-10-08 17:14:05,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 17:14:05,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:14:05,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 17:14:05,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-10-08 17:14:05,054 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) [2021-10-08 17:14:07,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:14:07,529 INFO L93 Difference]: Finished difference Result 1044 states and 3534 transitions. [2021-10-08 17:14:07,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-08 17:14:07,530 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 [2021-10-08 17:14:07,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:14:07,532 INFO L225 Difference]: With dead ends: 1044 [2021-10-08 17:14:07,532 INFO L226 Difference]: Without dead ends: 1044 [2021-10-08 17:14:07,533 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 1506.8ms TimeCoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2021-10-08 17:14:07,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1044 states. [2021-10-08 17:14:07,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1044 to 528. [2021-10-08 17:14:07,548 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) [2021-10-08 17:14:07,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 2043 transitions. [2021-10-08 17:14:07,550 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 2043 transitions. Word has length 20 [2021-10-08 17:14:07,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:14:07,550 INFO L470 AbstractCegarLoop]: Abstraction has 528 states and 2043 transitions. [2021-10-08 17:14:07,551 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) [2021-10-08 17:14:07,551 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 2043 transitions. [2021-10-08 17:14:07,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:14:07,552 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:14:07,553 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] [2021-10-08 17:14:07,565 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (75)] Forceful destruction successful, exit code 0 [2021-10-08 17:14:07,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:14:07,757 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)] === [2021-10-08 17:14:07,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:14:07,758 INFO L82 PathProgramCache]: Analyzing trace with hash 1857006971, now seen corresponding path program 30 times [2021-10-08 17:14:07,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:14:07,759 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1300090145] [2021-10-08 17:14:07,759 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 17:14:07,759 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:14:07,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:14:07,761 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:14:07,762 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (76)] Waiting until timeout for monitored process [2021-10-08 17:14:08,520 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-08 17:14:08,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:14:08,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:14:08,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:14:08,820 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:14:08,820 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:14:09,278 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:14:09,279 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:14:09,279 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1300090145] [2021-10-08 17:14:09,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1300090145] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:14:09,279 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:14:09,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-10-08 17:14:09,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354097191] [2021-10-08 17:14:09,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 17:14:09,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:14:09,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 17:14:09,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-10-08 17:14:09,281 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) [2021-10-08 17:14:12,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:14:12,041 INFO L93 Difference]: Finished difference Result 1364 states and 4503 transitions. [2021-10-08 17:14:12,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-08 17:14:12,043 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 [2021-10-08 17:14:12,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:14:12,045 INFO L225 Difference]: With dead ends: 1364 [2021-10-08 17:14:12,046 INFO L226 Difference]: Without dead ends: 1364 [2021-10-08 17:14:12,046 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 1396.4ms TimeCoverageRelationStatistics Valid=286, Invalid=644, Unknown=0, NotChecked=0, Total=930 [2021-10-08 17:14:12,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1364 states. [2021-10-08 17:14:12,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1364 to 538. [2021-10-08 17:14:12,062 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) [2021-10-08 17:14:12,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 2090 transitions. [2021-10-08 17:14:12,064 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 2090 transitions. Word has length 20 [2021-10-08 17:14:12,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:14:12,064 INFO L470 AbstractCegarLoop]: Abstraction has 538 states and 2090 transitions. [2021-10-08 17:14:12,064 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) [2021-10-08 17:14:12,064 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 2090 transitions. [2021-10-08 17:14:12,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:14:12,066 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:14:12,066 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] [2021-10-08 17:14:12,078 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (76)] Ended with exit code 0 [2021-10-08 17:14:12,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:14:12,267 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)] === [2021-10-08 17:14:12,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:14:12,267 INFO L82 PathProgramCache]: Analyzing trace with hash -1451831551, now seen corresponding path program 31 times [2021-10-08 17:14:12,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:14:12,268 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1765628655] [2021-10-08 17:14:12,268 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 17:14:12,269 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:14:12,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:14:12,270 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:14:12,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (77)] Waiting until timeout for monitored process [2021-10-08 17:14:12,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:14:12,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:14:12,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:14:13,191 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:14:13,191 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:14:14,490 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:14:14,491 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:14:14,491 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1765628655] [2021-10-08 17:14:14,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1765628655] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:14:14,491 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:14:14,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-10-08 17:14:14,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484806163] [2021-10-08 17:14:14,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 17:14:14,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:14:14,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 17:14:14,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2021-10-08 17:14:14,492 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) [2021-10-08 17:14:20,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:14:20,788 INFO L93 Difference]: Finished difference Result 1136 states and 3787 transitions. [2021-10-08 17:14:20,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-08 17:14:20,790 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 [2021-10-08 17:14:20,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:14:20,793 INFO L225 Difference]: With dead ends: 1136 [2021-10-08 17:14:20,793 INFO L226 Difference]: Without dead ends: 1136 [2021-10-08 17:14:20,793 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 4075.3ms TimeCoverageRelationStatistics Valid=217, Invalid=433, Unknown=0, NotChecked=0, Total=650 [2021-10-08 17:14:20,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1136 states. [2021-10-08 17:14:20,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1136 to 536. [2021-10-08 17:14:20,806 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) [2021-10-08 17:14:20,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 2083 transitions. [2021-10-08 17:14:20,808 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 2083 transitions. Word has length 20 [2021-10-08 17:14:20,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:14:20,808 INFO L470 AbstractCegarLoop]: Abstraction has 536 states and 2083 transitions. [2021-10-08 17:14:20,808 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) [2021-10-08 17:14:20,808 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 2083 transitions. [2021-10-08 17:14:20,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:14:20,810 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:14:20,810 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] [2021-10-08 17:14:20,821 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (77)] Ended with exit code 0 [2021-10-08 17:14:21,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:14:21,012 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)] === [2021-10-08 17:14:21,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:14:21,012 INFO L82 PathProgramCache]: Analyzing trace with hash 1361355629, now seen corresponding path program 12 times [2021-10-08 17:14:21,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:14:21,013 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1727333077] [2021-10-08 17:14:21,013 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 17:14:21,013 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:14:21,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:14:21,015 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:14:21,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (78)] Waiting until timeout for monitored process [2021-10-08 17:14:21,773 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-08 17:14:21,773 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:14:21,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:14:21,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:14:22,021 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:14:22,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:14:22,880 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:14:22,881 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:14:22,881 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1727333077] [2021-10-08 17:14:22,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1727333077] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-08 17:14:22,881 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 17:14:22,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 12 [2021-10-08 17:14:22,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271497042] [2021-10-08 17:14:22,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-08 17:14:22,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:14:22,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-08 17:14:22,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-08 17:14:22,883 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) [2021-10-08 17:14:23,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:14:23,231 INFO L93 Difference]: Finished difference Result 738 states and 2650 transitions. [2021-10-08 17:14:23,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 17:14:23,231 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 [2021-10-08 17:14:23,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:14:23,233 INFO L225 Difference]: With dead ends: 738 [2021-10-08 17:14:23,233 INFO L226 Difference]: Without dead ends: 738 [2021-10-08 17:14:23,234 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 725.0ms TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2021-10-08 17:14:23,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738 states. [2021-10-08 17:14:23,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738 to 532. [2021-10-08 17:14:23,245 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) [2021-10-08 17:14:23,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 2072 transitions. [2021-10-08 17:14:23,247 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 2072 transitions. Word has length 20 [2021-10-08 17:14:23,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:14:23,248 INFO L470 AbstractCegarLoop]: Abstraction has 532 states and 2072 transitions. [2021-10-08 17:14:23,248 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) [2021-10-08 17:14:23,248 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 2072 transitions. [2021-10-08 17:14:23,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:14:23,249 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:14:23,249 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] [2021-10-08 17:14:23,262 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (78)] Forceful destruction successful, exit code 0 [2021-10-08 17:14:23,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:14:23,451 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)] === [2021-10-08 17:14:23,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:14:23,452 INFO L82 PathProgramCache]: Analyzing trace with hash -779563579, now seen corresponding path program 13 times [2021-10-08 17:14:23,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:14:23,452 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [813707658] [2021-10-08 17:14:23,452 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 17:14:23,455 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:14:23,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:14:23,456 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:14:23,469 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (79)] Waiting until timeout for monitored process [2021-10-08 17:14:24,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:14:24,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:14:24,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:14:24,421 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:14:24,422 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:14:25,298 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:14:25,298 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:14:25,298 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [813707658] [2021-10-08 17:14:25,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [813707658] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-08 17:14:25,298 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 17:14:25,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 12 [2021-10-08 17:14:25,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743269902] [2021-10-08 17:14:25,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-08 17:14:25,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:14:25,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-08 17:14:25,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-10-08 17:14:25,299 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) [2021-10-08 17:14:25,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:14:25,616 INFO L93 Difference]: Finished difference Result 764 states and 2722 transitions. [2021-10-08 17:14:25,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 17:14:25,617 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 [2021-10-08 17:14:25,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:14:25,619 INFO L225 Difference]: With dead ends: 764 [2021-10-08 17:14:25,619 INFO L226 Difference]: Without dead ends: 764 [2021-10-08 17:14:25,619 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 689.3ms TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-10-08 17:14:25,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2021-10-08 17:14:25,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 532. [2021-10-08 17:14:25,630 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) [2021-10-08 17:14:25,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 2072 transitions. [2021-10-08 17:14:25,632 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 2072 transitions. Word has length 20 [2021-10-08 17:14:25,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:14:25,633 INFO L470 AbstractCegarLoop]: Abstraction has 532 states and 2072 transitions. [2021-10-08 17:14:25,633 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) [2021-10-08 17:14:25,633 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 2072 transitions. [2021-10-08 17:14:25,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:14:25,634 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:14:25,634 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] [2021-10-08 17:14:25,646 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (79)] Ended with exit code 0 [2021-10-08 17:14:25,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 79 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:14:25,835 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)] === [2021-10-08 17:14:25,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:14:25,836 INFO L82 PathProgramCache]: Analyzing trace with hash 823570923, now seen corresponding path program 32 times [2021-10-08 17:14:25,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:14:25,836 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1018373821] [2021-10-08 17:14:25,836 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:14:25,837 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:14:25,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:14:25,838 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:14:25,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (80)] Waiting until timeout for monitored process [2021-10-08 17:14:26,748 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:14:26,748 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:14:26,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:14:26,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:14:27,042 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:14:27,043 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:14:27,753 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:14:27,754 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:14:27,754 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1018373821] [2021-10-08 17:14:27,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1018373821] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-08 17:14:27,754 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 17:14:27,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 12 [2021-10-08 17:14:27,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539298433] [2021-10-08 17:14:27,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-08 17:14:27,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:14:27,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-08 17:14:27,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-10-08 17:14:27,756 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) [2021-10-08 17:14:28,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:14:28,388 INFO L93 Difference]: Finished difference Result 750 states and 2690 transitions. [2021-10-08 17:14:28,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-08 17:14:28,390 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 [2021-10-08 17:14:28,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:14:28,392 INFO L225 Difference]: With dead ends: 750 [2021-10-08 17:14:28,392 INFO L226 Difference]: Without dead ends: 748 [2021-10-08 17:14:28,392 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 666.1ms TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2021-10-08 17:14:28,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2021-10-08 17:14:28,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 534. [2021-10-08 17:14:28,403 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) [2021-10-08 17:14:28,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 2077 transitions. [2021-10-08 17:14:28,405 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 2077 transitions. Word has length 20 [2021-10-08 17:14:28,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:14:28,405 INFO L470 AbstractCegarLoop]: Abstraction has 534 states and 2077 transitions. [2021-10-08 17:14:28,405 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) [2021-10-08 17:14:28,406 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 2077 transitions. [2021-10-08 17:14:28,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:14:28,408 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:14:28,408 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] [2021-10-08 17:14:28,426 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (80)] Forceful destruction successful, exit code 0 [2021-10-08 17:14:28,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:14:28,622 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)] === [2021-10-08 17:14:28,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:14:28,622 INFO L82 PathProgramCache]: Analyzing trace with hash -1476519805, now seen corresponding path program 33 times [2021-10-08 17:14:28,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:14:28,623 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [724651540] [2021-10-08 17:14:28,623 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:14:28,623 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:14:28,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:14:28,625 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:14:28,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (81)] Waiting until timeout for monitored process [2021-10-08 17:14:29,463 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-08 17:14:29,463 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:14:29,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:14:29,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:14:29,795 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:14:29,795 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:14:30,551 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:14:30,552 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:14:30,552 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [724651540] [2021-10-08 17:14:30,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [724651540] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:14:30,552 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:14:30,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-10-08 17:14:30,552 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181343171] [2021-10-08 17:14:30,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 17:14:30,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:14:30,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 17:14:30,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-10-08 17:14:30,554 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) [2021-10-08 17:14:40,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:14:40,463 INFO L93 Difference]: Finished difference Result 1190 states and 3879 transitions. [2021-10-08 17:14:40,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-08 17:14:40,465 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 [2021-10-08 17:14:40,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:14:40,472 INFO L225 Difference]: With dead ends: 1190 [2021-10-08 17:14:40,473 INFO L226 Difference]: Without dead ends: 1190 [2021-10-08 17:14:40,473 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 2491.6ms TimeCoverageRelationStatistics Valid=218, Invalid=594, Unknown=0, NotChecked=0, Total=812 [2021-10-08 17:14:40,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1190 states. [2021-10-08 17:14:40,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1190 to 538. [2021-10-08 17:14:40,498 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) [2021-10-08 17:14:40,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 2107 transitions. [2021-10-08 17:14:40,501 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 2107 transitions. Word has length 20 [2021-10-08 17:14:40,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:14:40,502 INFO L470 AbstractCegarLoop]: Abstraction has 538 states and 2107 transitions. [2021-10-08 17:14:40,502 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) [2021-10-08 17:14:40,502 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 2107 transitions. [2021-10-08 17:14:40,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:14:40,504 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:14:40,505 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] [2021-10-08 17:14:40,526 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (81)] Forceful destruction successful, exit code 0 [2021-10-08 17:14:40,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:14:40,706 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)] === [2021-10-08 17:14:40,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:14:40,706 INFO L82 PathProgramCache]: Analyzing trace with hash 818319371, now seen corresponding path program 34 times [2021-10-08 17:14:40,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:14:40,707 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [665137548] [2021-10-08 17:14:40,707 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 17:14:40,708 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:14:40,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:14:40,709 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:14:40,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (82)] Waiting until timeout for monitored process [2021-10-08 17:14:41,401 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 17:14:41,401 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:14:41,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:14:41,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:14:41,620 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:14:41,621 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:14:42,545 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:14:42,545 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:14:42,545 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [665137548] [2021-10-08 17:14:42,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [665137548] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-08 17:14:42,546 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 17:14:42,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 12 [2021-10-08 17:14:42,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879073422] [2021-10-08 17:14:42,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-08 17:14:42,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:14:42,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-08 17:14:42,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-10-08 17:14:42,547 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) [2021-10-08 17:14:43,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:14:43,023 INFO L93 Difference]: Finished difference Result 760 states and 2722 transitions. [2021-10-08 17:14:43,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-08 17:14:43,024 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 [2021-10-08 17:14:43,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:14:43,026 INFO L225 Difference]: With dead ends: 760 [2021-10-08 17:14:43,026 INFO L226 Difference]: Without dead ends: 758 [2021-10-08 17:14:43,027 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 910.7ms TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2021-10-08 17:14:43,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2021-10-08 17:14:43,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 540. [2021-10-08 17:14:43,038 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) [2021-10-08 17:14:43,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 2112 transitions. [2021-10-08 17:14:43,040 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 2112 transitions. Word has length 20 [2021-10-08 17:14:43,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:14:43,040 INFO L470 AbstractCegarLoop]: Abstraction has 540 states and 2112 transitions. [2021-10-08 17:14:43,040 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) [2021-10-08 17:14:43,040 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 2112 transitions. [2021-10-08 17:14:43,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:14:43,042 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:14:43,042 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] [2021-10-08 17:14:43,056 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (82)] Forceful destruction successful, exit code 0 [2021-10-08 17:14:43,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:14:43,244 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)] === [2021-10-08 17:14:43,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:14:43,247 INFO L82 PathProgramCache]: Analyzing trace with hash 2125762691, now seen corresponding path program 35 times [2021-10-08 17:14:43,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:14:43,247 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1211429499] [2021-10-08 17:14:43,247 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 17:14:43,247 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:14:43,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:14:43,248 INFO L229 MonitoredProcess]: Starting monitored process 83 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:14:43,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (83)] Waiting until timeout for monitored process [2021-10-08 17:14:44,026 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:14:44,027 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:14:44,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:14:44,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:14:44,320 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:14:44,321 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:14:45,414 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:14:45,415 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:14:45,415 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1211429499] [2021-10-08 17:14:45,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1211429499] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:14:45,415 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:14:45,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-10-08 17:14:45,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697305618] [2021-10-08 17:14:45,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 17:14:45,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:14:45,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 17:14:45,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2021-10-08 17:14:45,417 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) [2021-10-08 17:14:59,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:14:59,356 INFO L93 Difference]: Finished difference Result 1034 states and 3392 transitions. [2021-10-08 17:14:59,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-08 17:14:59,358 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 [2021-10-08 17:14:59,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:14:59,362 INFO L225 Difference]: With dead ends: 1034 [2021-10-08 17:14:59,362 INFO L226 Difference]: Without dead ends: 1034 [2021-10-08 17:14:59,362 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 7077.7ms TimeCoverageRelationStatistics Valid=243, Invalid=627, Unknown=0, NotChecked=0, Total=870 [2021-10-08 17:14:59,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2021-10-08 17:14:59,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 538. [2021-10-08 17:14:59,377 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) [2021-10-08 17:14:59,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 2107 transitions. [2021-10-08 17:14:59,379 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 2107 transitions. Word has length 20 [2021-10-08 17:14:59,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:14:59,379 INFO L470 AbstractCegarLoop]: Abstraction has 538 states and 2107 transitions. [2021-10-08 17:14:59,379 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) [2021-10-08 17:14:59,379 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 2107 transitions. [2021-10-08 17:14:59,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:14:59,380 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:14:59,380 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:14:59,394 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (83)] Forceful destruction successful, exit code 0 [2021-10-08 17:14:59,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:14:59,581 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)] === [2021-10-08 17:14:59,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:14:59,582 INFO L82 PathProgramCache]: Analyzing trace with hash 399517451, now seen corresponding path program 36 times [2021-10-08 17:14:59,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:14:59,583 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1552466139] [2021-10-08 17:14:59,583 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 17:14:59,584 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:14:59,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:14:59,585 INFO L229 MonitoredProcess]: Starting monitored process 84 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:14:59,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (84)] Waiting until timeout for monitored process [2021-10-08 17:15:00,428 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-08 17:15:00,428 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:15:00,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:15:00,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:15:00,783 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:15:00,783 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:15:01,783 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:15:01,783 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:15:01,783 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1552466139] [2021-10-08 17:15:01,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1552466139] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:15:01,783 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:15:01,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-10-08 17:15:01,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191226056] [2021-10-08 17:15:01,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 17:15:01,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:15:01,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 17:15:01,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-10-08 17:15:01,785 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) [2021-10-08 17:15:08,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:15:08,404 INFO L93 Difference]: Finished difference Result 1178 states and 3905 transitions. [2021-10-08 17:15:08,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-08 17:15:08,406 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 [2021-10-08 17:15:08,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:15:08,410 INFO L225 Difference]: With dead ends: 1178 [2021-10-08 17:15:08,410 INFO L226 Difference]: Without dead ends: 1178 [2021-10-08 17:15:08,411 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 3387.1ms TimeCoverageRelationStatistics Valid=236, Invalid=520, Unknown=0, NotChecked=0, Total=756 [2021-10-08 17:15:08,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1178 states. [2021-10-08 17:15:08,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1178 to 546. [2021-10-08 17:15:08,433 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) [2021-10-08 17:15:08,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 2156 transitions. [2021-10-08 17:15:08,436 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 2156 transitions. Word has length 20 [2021-10-08 17:15:08,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:15:08,436 INFO L470 AbstractCegarLoop]: Abstraction has 546 states and 2156 transitions. [2021-10-08 17:15:08,436 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) [2021-10-08 17:15:08,436 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 2156 transitions. [2021-10-08 17:15:08,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:15:08,437 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:15:08,438 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] [2021-10-08 17:15:08,451 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (84)] Forceful destruction successful, exit code 0 [2021-10-08 17:15:08,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 84 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:15:08,639 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)] === [2021-10-08 17:15:08,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:15:08,639 INFO L82 PathProgramCache]: Analyzing trace with hash -457573141, now seen corresponding path program 37 times [2021-10-08 17:15:08,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:15:08,640 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1952514156] [2021-10-08 17:15:08,641 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 17:15:08,641 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:15:08,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:15:08,642 INFO L229 MonitoredProcess]: Starting monitored process 85 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:15:08,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (85)] Waiting until timeout for monitored process [2021-10-08 17:15:09,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:15:09,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:15:09,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:15:09,710 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:15:09,710 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:15:10,808 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:15:10,809 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:15:10,809 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1952514156] [2021-10-08 17:15:10,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1952514156] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:15:10,809 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:15:10,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-10-08 17:15:10,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42209773] [2021-10-08 17:15:10,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 17:15:10,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:15:10,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 17:15:10,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2021-10-08 17:15:10,811 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) [2021-10-08 17:15:16,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:15:16,135 INFO L93 Difference]: Finished difference Result 1188 states and 3901 transitions. [2021-10-08 17:15:16,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-08 17:15:16,136 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 [2021-10-08 17:15:16,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:15:16,139 INFO L225 Difference]: With dead ends: 1188 [2021-10-08 17:15:16,139 INFO L226 Difference]: Without dead ends: 1188 [2021-10-08 17:15:16,139 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 2893.8ms TimeCoverageRelationStatistics Valid=238, Invalid=518, Unknown=0, NotChecked=0, Total=756 [2021-10-08 17:15:16,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1188 states. [2021-10-08 17:15:16,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1188 to 542. [2021-10-08 17:15:16,154 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) [2021-10-08 17:15:16,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 2137 transitions. [2021-10-08 17:15:16,156 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 2137 transitions. Word has length 20 [2021-10-08 17:15:16,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:15:16,156 INFO L470 AbstractCegarLoop]: Abstraction has 542 states and 2137 transitions. [2021-10-08 17:15:16,156 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) [2021-10-08 17:15:16,157 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 2137 transitions. [2021-10-08 17:15:16,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:15:16,158 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:15:16,158 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] [2021-10-08 17:15:16,172 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (85)] Ended with exit code 0 [2021-10-08 17:15:16,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:15:16,359 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)] === [2021-10-08 17:15:16,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:15:16,360 INFO L82 PathProgramCache]: Analyzing trace with hash 1366052615, now seen corresponding path program 14 times [2021-10-08 17:15:16,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:15:16,361 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [955656460] [2021-10-08 17:15:16,361 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:15:16,361 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:15:16,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:15:16,362 INFO L229 MonitoredProcess]: Starting monitored process 86 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:15:16,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (86)] Waiting until timeout for monitored process [2021-10-08 17:15:17,265 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:15:17,265 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:15:17,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:15:17,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:15:17,489 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:15:17,489 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:15:17,890 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:15:17,890 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:15:17,890 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [955656460] [2021-10-08 17:15:17,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [955656460] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-08 17:15:17,890 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 17:15:17,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 12 [2021-10-08 17:15:17,891 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683691186] [2021-10-08 17:15:17,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-08 17:15:17,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:15:17,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-08 17:15:17,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-10-08 17:15:17,892 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) [2021-10-08 17:15:18,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:15:18,485 INFO L93 Difference]: Finished difference Result 670 states and 2502 transitions. [2021-10-08 17:15:18,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 17:15:18,486 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 [2021-10-08 17:15:18,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:15:18,488 INFO L225 Difference]: With dead ends: 670 [2021-10-08 17:15:18,488 INFO L226 Difference]: Without dead ends: 658 [2021-10-08 17:15:18,488 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 542.6ms TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2021-10-08 17:15:18,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2021-10-08 17:15:18,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 554. [2021-10-08 17:15:18,499 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) [2021-10-08 17:15:18,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 2177 transitions. [2021-10-08 17:15:18,501 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 2177 transitions. Word has length 20 [2021-10-08 17:15:18,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:15:18,502 INFO L470 AbstractCegarLoop]: Abstraction has 554 states and 2177 transitions. [2021-10-08 17:15:18,502 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) [2021-10-08 17:15:18,502 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 2177 transitions. [2021-10-08 17:15:18,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:15:18,504 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:15:18,504 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] [2021-10-08 17:15:18,519 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (86)] Forceful destruction successful, exit code 0 [2021-10-08 17:15:18,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 86 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:15:18,705 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)] === [2021-10-08 17:15:18,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:15:18,705 INFO L82 PathProgramCache]: Analyzing trace with hash -826818601, now seen corresponding path program 38 times [2021-10-08 17:15:18,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:15:18,707 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1351059155] [2021-10-08 17:15:18,707 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:15:18,708 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:15:18,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:15:18,709 INFO L229 MonitoredProcess]: Starting monitored process 87 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:15:18,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (87)] Waiting until timeout for monitored process [2021-10-08 17:15:19,650 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:15:19,650 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:15:19,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:15:19,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:15:19,998 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:15:19,998 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:15:20,372 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:15:20,373 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:15:20,373 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1351059155] [2021-10-08 17:15:20,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1351059155] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:15:20,373 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:15:20,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-10-08 17:15:20,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910136000] [2021-10-08 17:15:20,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 17:15:20,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:15:20,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 17:15:20,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2021-10-08 17:15:20,375 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) [2021-10-08 17:15:22,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:15:22,234 INFO L93 Difference]: Finished difference Result 888 states and 3154 transitions. [2021-10-08 17:15:22,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-08 17:15:22,235 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 [2021-10-08 17:15:22,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:15:22,238 INFO L225 Difference]: With dead ends: 888 [2021-10-08 17:15:22,238 INFO L226 Difference]: Without dead ends: 888 [2021-10-08 17:15:22,238 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 1126.7ms TimeCoverageRelationStatistics Valid=200, Invalid=400, Unknown=0, NotChecked=0, Total=600 [2021-10-08 17:15:22,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 888 states. [2021-10-08 17:15:22,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 888 to 546. [2021-10-08 17:15:22,251 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) [2021-10-08 17:15:22,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 2147 transitions. [2021-10-08 17:15:22,253 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 2147 transitions. Word has length 20 [2021-10-08 17:15:22,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:15:22,253 INFO L470 AbstractCegarLoop]: Abstraction has 546 states and 2147 transitions. [2021-10-08 17:15:22,253 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) [2021-10-08 17:15:22,253 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 2147 transitions. [2021-10-08 17:15:22,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:15:22,255 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:15:22,255 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] [2021-10-08 17:15:22,273 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (87)] Forceful destruction successful, exit code 0 [2021-10-08 17:15:22,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:15:22,456 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)] === [2021-10-08 17:15:22,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:15:22,456 INFO L82 PathProgramCache]: Analyzing trace with hash -586270953, now seen corresponding path program 39 times [2021-10-08 17:15:22,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:15:22,457 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2007670654] [2021-10-08 17:15:22,457 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:15:22,457 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:15:22,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:15:22,458 INFO L229 MonitoredProcess]: Starting monitored process 88 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:15:22,482 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (88)] Waiting until timeout for monitored process [2021-10-08 17:15:23,452 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-08 17:15:23,452 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:15:23,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:15:23,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:15:23,794 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:15:23,795 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:15:24,342 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:15:24,342 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:15:24,343 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2007670654] [2021-10-08 17:15:24,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2007670654] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-08 17:15:24,343 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 17:15:24,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 12 [2021-10-08 17:15:24,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255628776] [2021-10-08 17:15:24,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-08 17:15:24,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:15:24,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-08 17:15:24,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-10-08 17:15:24,345 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) [2021-10-08 17:15:24,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:15:24,823 INFO L93 Difference]: Finished difference Result 632 states and 2427 transitions. [2021-10-08 17:15:24,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 17:15:24,824 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 [2021-10-08 17:15:24,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:15:24,826 INFO L225 Difference]: With dead ends: 632 [2021-10-08 17:15:24,826 INFO L226 Difference]: Without dead ends: 630 [2021-10-08 17:15:24,827 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 669.3ms TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2021-10-08 17:15:24,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2021-10-08 17:15:24,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 548. [2021-10-08 17:15:24,838 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) [2021-10-08 17:15:24,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 2152 transitions. [2021-10-08 17:15:24,840 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 2152 transitions. Word has length 20 [2021-10-08 17:15:24,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:15:24,840 INFO L470 AbstractCegarLoop]: Abstraction has 548 states and 2152 transitions. [2021-10-08 17:15:24,840 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) [2021-10-08 17:15:24,841 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 2152 transitions. [2021-10-08 17:15:24,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:15:24,842 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:15:24,842 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] [2021-10-08 17:15:24,857 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (88)] Forceful destruction successful, exit code 0 [2021-10-08 17:15:25,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 88 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:15:25,043 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)] === [2021-10-08 17:15:25,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:15:25,043 INFO L82 PathProgramCache]: Analyzing trace with hash 1408605615, now seen corresponding path program 40 times [2021-10-08 17:15:25,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:15:25,044 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1009746279] [2021-10-08 17:15:25,044 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 17:15:25,044 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:15:25,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:15:25,045 INFO L229 MonitoredProcess]: Starting monitored process 89 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:15:25,047 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (89)] Waiting until timeout for monitored process [2021-10-08 17:15:25,859 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 17:15:25,860 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:15:25,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:15:25,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:15:26,222 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:15:26,222 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:15:26,668 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:15:26,669 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:15:26,669 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1009746279] [2021-10-08 17:15:26,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1009746279] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:15:26,669 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:15:26,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-10-08 17:15:26,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734823349] [2021-10-08 17:15:26,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 17:15:26,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:15:26,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 17:15:26,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-10-08 17:15:26,671 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) [2021-10-08 17:15:29,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:15:29,160 INFO L93 Difference]: Finished difference Result 1024 states and 3606 transitions. [2021-10-08 17:15:29,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-08 17:15:29,160 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 [2021-10-08 17:15:29,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:15:29,163 INFO L225 Difference]: With dead ends: 1024 [2021-10-08 17:15:29,163 INFO L226 Difference]: Without dead ends: 1024 [2021-10-08 17:15:29,163 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 1779.5ms TimeCoverageRelationStatistics Valid=292, Invalid=638, Unknown=0, NotChecked=0, Total=930 [2021-10-08 17:15:29,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1024 states. [2021-10-08 17:15:29,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1024 to 544. [2021-10-08 17:15:29,175 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) [2021-10-08 17:15:29,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 2142 transitions. [2021-10-08 17:15:29,177 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 2142 transitions. Word has length 20 [2021-10-08 17:15:29,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:15:29,177 INFO L470 AbstractCegarLoop]: Abstraction has 544 states and 2142 transitions. [2021-10-08 17:15:29,177 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) [2021-10-08 17:15:29,177 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 2142 transitions. [2021-10-08 17:15:29,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:15:29,178 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:15:29,179 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] [2021-10-08 17:15:29,191 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (89)] Forceful destruction successful, exit code 0 [2021-10-08 17:15:29,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 89 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:15:29,379 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)] === [2021-10-08 17:15:29,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:15:29,380 INFO L82 PathProgramCache]: Analyzing trace with hash 589219691, now seen corresponding path program 41 times [2021-10-08 17:15:29,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:15:29,380 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [853073392] [2021-10-08 17:15:29,380 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 17:15:29,381 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:15:29,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:15:29,382 INFO L229 MonitoredProcess]: Starting monitored process 90 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:15:29,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (90)] Waiting until timeout for monitored process [2021-10-08 17:15:30,214 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:15:30,214 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:15:30,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:15:30,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:15:30,483 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:15:30,483 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:15:30,924 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:15:30,924 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:15:30,924 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [853073392] [2021-10-08 17:15:30,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [853073392] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-08 17:15:30,925 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 17:15:30,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 12 [2021-10-08 17:15:30,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063839012] [2021-10-08 17:15:30,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-08 17:15:30,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:15:30,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-08 17:15:30,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-10-08 17:15:30,926 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) [2021-10-08 17:15:31,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:15:31,365 INFO L93 Difference]: Finished difference Result 662 states and 2490 transitions. [2021-10-08 17:15:31,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 17:15:31,366 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 [2021-10-08 17:15:31,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:15:31,368 INFO L225 Difference]: With dead ends: 662 [2021-10-08 17:15:31,368 INFO L226 Difference]: Without dead ends: 660 [2021-10-08 17:15:31,369 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 579.9ms TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2021-10-08 17:15:31,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2021-10-08 17:15:31,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 548. [2021-10-08 17:15:31,380 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) [2021-10-08 17:15:31,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 2154 transitions. [2021-10-08 17:15:31,382 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 2154 transitions. Word has length 20 [2021-10-08 17:15:31,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:15:31,382 INFO L470 AbstractCegarLoop]: Abstraction has 548 states and 2154 transitions. [2021-10-08 17:15:31,382 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) [2021-10-08 17:15:31,382 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 2154 transitions. [2021-10-08 17:15:31,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:15:31,383 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:15:31,383 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] [2021-10-08 17:15:31,397 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (90)] Forceful destruction successful, exit code 0 [2021-10-08 17:15:31,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 90 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:15:31,584 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)] === [2021-10-08 17:15:31,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:15:31,585 INFO L82 PathProgramCache]: Analyzing trace with hash -1710871037, now seen corresponding path program 42 times [2021-10-08 17:15:31,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:15:31,586 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [857613428] [2021-10-08 17:15:31,586 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 17:15:31,586 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:15:31,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:15:31,587 INFO L229 MonitoredProcess]: Starting monitored process 91 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:15:31,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (91)] Waiting until timeout for monitored process [2021-10-08 17:15:32,502 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-08 17:15:32,503 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:15:32,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:15:32,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:15:32,810 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:15:32,810 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:15:33,203 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:15:33,203 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:15:33,203 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [857613428] [2021-10-08 17:15:33,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [857613428] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:15:33,203 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:15:33,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-10-08 17:15:33,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148762783] [2021-10-08 17:15:33,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 17:15:33,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:15:33,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 17:15:33,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2021-10-08 17:15:33,205 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) [2021-10-08 17:15:35,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:15:35,468 INFO L93 Difference]: Finished difference Result 1146 states and 3817 transitions. [2021-10-08 17:15:35,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-08 17:15:35,469 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 [2021-10-08 17:15:35,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:15:35,472 INFO L225 Difference]: With dead ends: 1146 [2021-10-08 17:15:35,473 INFO L226 Difference]: Without dead ends: 1146 [2021-10-08 17:15:35,473 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 1566.7ms TimeCoverageRelationStatistics Valid=266, Invalid=546, Unknown=0, NotChecked=0, Total=812 [2021-10-08 17:15:35,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1146 states. [2021-10-08 17:15:35,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1146 to 548. [2021-10-08 17:15:35,487 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) [2021-10-08 17:15:35,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 2156 transitions. [2021-10-08 17:15:35,489 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 2156 transitions. Word has length 20 [2021-10-08 17:15:35,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:15:35,489 INFO L470 AbstractCegarLoop]: Abstraction has 548 states and 2156 transitions. [2021-10-08 17:15:35,489 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) [2021-10-08 17:15:35,489 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 2156 transitions. [2021-10-08 17:15:35,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:15:35,491 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:15:35,491 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] [2021-10-08 17:15:35,504 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (91)] Forceful destruction successful, exit code 0 [2021-10-08 17:15:35,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 91 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:15:35,692 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)] === [2021-10-08 17:15:35,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:15:35,693 INFO L82 PathProgramCache]: Analyzing trace with hash 1696440159, now seen corresponding path program 43 times [2021-10-08 17:15:35,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:15:35,693 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [740012610] [2021-10-08 17:15:35,693 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 17:15:35,694 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:15:35,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:15:35,695 INFO L229 MonitoredProcess]: Starting monitored process 92 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:15:35,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (92)] Waiting until timeout for monitored process [2021-10-08 17:15:36,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:15:36,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:15:36,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:15:36,753 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:15:36,753 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:15:37,154 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:15:37,154 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:15:37,155 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [740012610] [2021-10-08 17:15:37,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [740012610] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-08 17:15:37,155 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 17:15:37,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 12 [2021-10-08 17:15:37,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252472887] [2021-10-08 17:15:37,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-08 17:15:37,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:15:37,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-08 17:15:37,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-10-08 17:15:37,156 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) [2021-10-08 17:15:37,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:15:37,545 INFO L93 Difference]: Finished difference Result 644 states and 2455 transitions. [2021-10-08 17:15:37,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 17:15:37,546 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 [2021-10-08 17:15:37,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:15:37,549 INFO L225 Difference]: With dead ends: 644 [2021-10-08 17:15:37,549 INFO L226 Difference]: Without dead ends: 640 [2021-10-08 17:15:37,550 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 537.9ms TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2021-10-08 17:15:37,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2021-10-08 17:15:37,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 548. [2021-10-08 17:15:37,565 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) [2021-10-08 17:15:37,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 2154 transitions. [2021-10-08 17:15:37,568 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 2154 transitions. Word has length 20 [2021-10-08 17:15:37,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:15:37,568 INFO L470 AbstractCegarLoop]: Abstraction has 548 states and 2154 transitions. [2021-10-08 17:15:37,569 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) [2021-10-08 17:15:37,569 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 2154 transitions. [2021-10-08 17:15:37,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:15:37,571 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:15:37,571 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] [2021-10-08 17:15:37,589 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (92)] Forceful destruction successful, exit code 0 [2021-10-08 17:15:37,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:15:37,786 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)] === [2021-10-08 17:15:37,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:15:37,787 INFO L82 PathProgramCache]: Analyzing trace with hash 1201163757, now seen corresponding path program 27 times [2021-10-08 17:15:37,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:15:37,787 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1748049645] [2021-10-08 17:15:37,787 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:15:37,788 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:15:37,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:15:37,789 INFO L229 MonitoredProcess]: Starting monitored process 93 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:15:37,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (93)] Waiting until timeout for monitored process [2021-10-08 17:15:38,755 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-08 17:15:38,755 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:15:38,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:15:38,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:15:39,142 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:15:39,142 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:15:39,685 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:15:39,686 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:15:39,686 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1748049645] [2021-10-08 17:15:39,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1748049645] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:15:39,686 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:15:39,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2021-10-08 17:15:39,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811571218] [2021-10-08 17:15:39,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 17:15:39,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:15:39,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 17:15:39,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-10-08 17:15:39,688 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) [2021-10-08 17:15:43,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:15:43,239 INFO L93 Difference]: Finished difference Result 1450 states and 5000 transitions. [2021-10-08 17:15:43,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-08 17:15:43,240 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 [2021-10-08 17:15:43,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:15:43,243 INFO L225 Difference]: With dead ends: 1450 [2021-10-08 17:15:43,244 INFO L226 Difference]: Without dead ends: 1446 [2021-10-08 17:15:43,244 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 1659.6ms TimeCoverageRelationStatistics Valid=177, Invalid=423, Unknown=0, NotChecked=0, Total=600 [2021-10-08 17:15:43,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1446 states. [2021-10-08 17:15:43,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1446 to 572. [2021-10-08 17:15:43,261 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) [2021-10-08 17:15:43,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 2283 transitions. [2021-10-08 17:15:43,263 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 2283 transitions. Word has length 20 [2021-10-08 17:15:43,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:15:43,263 INFO L470 AbstractCegarLoop]: Abstraction has 572 states and 2283 transitions. [2021-10-08 17:15:43,263 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) [2021-10-08 17:15:43,263 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 2283 transitions. [2021-10-08 17:15:43,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:15:43,265 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:15:43,265 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] [2021-10-08 17:15:43,279 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (93)] Forceful destruction successful, exit code 0 [2021-10-08 17:15:43,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 93 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:15:43,467 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)] === [2021-10-08 17:15:43,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:15:43,468 INFO L82 PathProgramCache]: Analyzing trace with hash 1488194541, now seen corresponding path program 28 times [2021-10-08 17:15:43,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:15:43,469 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1888328805] [2021-10-08 17:15:43,469 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 17:15:43,469 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:15:43,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:15:43,470 INFO L229 MonitoredProcess]: Starting monitored process 94 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:15:43,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (94)] Waiting until timeout for monitored process [2021-10-08 17:15:44,341 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 17:15:44,341 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:15:44,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:15:44,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:15:44,754 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:15:44,754 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:15:45,365 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:15:45,366 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:15:45,366 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1888328805] [2021-10-08 17:15:45,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1888328805] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:15:45,366 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:15:45,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2021-10-08 17:15:45,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38479820] [2021-10-08 17:15:45,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 17:15:45,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:15:45,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 17:15:45,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2021-10-08 17:15:45,368 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) [2021-10-08 17:15:48,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:15:48,443 INFO L93 Difference]: Finished difference Result 1460 states and 5045 transitions. [2021-10-08 17:15:48,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-08 17:15:48,445 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 [2021-10-08 17:15:48,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:15:48,450 INFO L225 Difference]: With dead ends: 1460 [2021-10-08 17:15:48,450 INFO L226 Difference]: Without dead ends: 1460 [2021-10-08 17:15:48,450 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 1839.8ms TimeCoverageRelationStatistics Valid=178, Invalid=472, Unknown=0, NotChecked=0, Total=650 [2021-10-08 17:15:48,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1460 states. [2021-10-08 17:15:48,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1460 to 576. [2021-10-08 17:15:48,475 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) [2021-10-08 17:15:48,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 2303 transitions. [2021-10-08 17:15:48,480 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 2303 transitions. Word has length 20 [2021-10-08 17:15:48,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:15:48,480 INFO L470 AbstractCegarLoop]: Abstraction has 576 states and 2303 transitions. [2021-10-08 17:15:48,481 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) [2021-10-08 17:15:48,481 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 2303 transitions. [2021-10-08 17:15:48,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:15:48,483 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:15:48,483 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] [2021-10-08 17:15:48,504 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (94)] Forceful destruction successful, exit code 0 [2021-10-08 17:15:48,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:15:48,698 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)] === [2021-10-08 17:15:48,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:15:48,698 INFO L82 PathProgramCache]: Analyzing trace with hash 1250910029, now seen corresponding path program 29 times [2021-10-08 17:15:48,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:15:48,699 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [567671119] [2021-10-08 17:15:48,699 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 17:15:48,699 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:15:48,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:15:48,701 INFO L229 MonitoredProcess]: Starting monitored process 95 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:15:48,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (95)] Waiting until timeout for monitored process [2021-10-08 17:15:49,512 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:15:49,513 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:15:49,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:15:49,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:15:49,841 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:15:49,841 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:15:50,231 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:15:50,231 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:15:50,231 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [567671119] [2021-10-08 17:15:50,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [567671119] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:15:50,232 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:15:50,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2021-10-08 17:15:50,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701136156] [2021-10-08 17:15:50,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 17:15:50,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:15:50,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 17:15:50,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2021-10-08 17:15:50,233 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) [2021-10-08 17:15:52,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:15:52,888 INFO L93 Difference]: Finished difference Result 1330 states and 4621 transitions. [2021-10-08 17:15:52,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-08 17:15:52,889 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 [2021-10-08 17:15:52,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:15:52,893 INFO L225 Difference]: With dead ends: 1330 [2021-10-08 17:15:52,893 INFO L226 Difference]: Without dead ends: 1330 [2021-10-08 17:15:52,894 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 1210.6ms TimeCoverageRelationStatistics Valid=191, Invalid=511, Unknown=0, NotChecked=0, Total=702 [2021-10-08 17:15:52,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1330 states. [2021-10-08 17:15:52,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1330 to 574. [2021-10-08 17:15:52,911 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) [2021-10-08 17:15:52,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 2296 transitions. [2021-10-08 17:15:52,913 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 2296 transitions. Word has length 20 [2021-10-08 17:15:52,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:15:52,913 INFO L470 AbstractCegarLoop]: Abstraction has 574 states and 2296 transitions. [2021-10-08 17:15:52,913 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) [2021-10-08 17:15:52,913 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 2296 transitions. [2021-10-08 17:15:52,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:15:52,915 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:15:52,915 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] [2021-10-08 17:15:52,934 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (95)] Forceful destruction successful, exit code 0 [2021-10-08 17:15:53,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:15:53,129 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)] === [2021-10-08 17:15:53,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:15:53,129 INFO L82 PathProgramCache]: Analyzing trace with hash 2086962037, now seen corresponding path program 30 times [2021-10-08 17:15:53,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:15:53,130 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [256150596] [2021-10-08 17:15:53,130 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 17:15:53,130 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:15:53,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:15:53,131 INFO L229 MonitoredProcess]: Starting monitored process 96 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:15:53,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (96)] Waiting until timeout for monitored process [2021-10-08 17:15:54,080 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-08 17:15:54,080 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:15:54,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:15:54,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:15:54,394 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:15:54,394 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:15:55,100 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:15:55,101 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:15:55,101 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [256150596] [2021-10-08 17:15:55,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [256150596] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:15:55,101 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:15:55,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2021-10-08 17:15:55,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917416631] [2021-10-08 17:15:55,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 17:15:55,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:15:55,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 17:15:55,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2021-10-08 17:15:55,103 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) [2021-10-08 17:16:00,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:16:00,605 INFO L93 Difference]: Finished difference Result 1250 states and 4373 transitions. [2021-10-08 17:16:00,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-08 17:16:00,606 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 [2021-10-08 17:16:00,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:16:00,610 INFO L225 Difference]: With dead ends: 1250 [2021-10-08 17:16:00,611 INFO L226 Difference]: Without dead ends: 1250 [2021-10-08 17:16:00,611 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 1349.1ms TimeCoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2021-10-08 17:16:00,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1250 states. [2021-10-08 17:16:00,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1250 to 584. [2021-10-08 17:16:00,626 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) [2021-10-08 17:16:00,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 2359 transitions. [2021-10-08 17:16:00,628 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 2359 transitions. Word has length 20 [2021-10-08 17:16:00,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:16:00,628 INFO L470 AbstractCegarLoop]: Abstraction has 584 states and 2359 transitions. [2021-10-08 17:16:00,629 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) [2021-10-08 17:16:00,629 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 2359 transitions. [2021-10-08 17:16:00,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:16:00,630 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:16:00,630 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] [2021-10-08 17:16:00,643 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (96)] Ended with exit code 0 [2021-10-08 17:16:00,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:16:00,831 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)] === [2021-10-08 17:16:00,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:16:00,832 INFO L82 PathProgramCache]: Analyzing trace with hash -1920974475, now seen corresponding path program 31 times [2021-10-08 17:16:00,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:16:00,832 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [354051488] [2021-10-08 17:16:00,833 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 17:16:00,833 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:16:00,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:16:00,834 INFO L229 MonitoredProcess]: Starting monitored process 97 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:16:00,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (97)] Waiting until timeout for monitored process [2021-10-08 17:16:01,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:16:01,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:16:01,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:16:02,131 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:16:02,131 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:16:02,885 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:16:02,885 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:16:02,886 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [354051488] [2021-10-08 17:16:02,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [354051488] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:16:02,886 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:16:02,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2021-10-08 17:16:02,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818541578] [2021-10-08 17:16:02,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 17:16:02,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:16:02,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 17:16:02,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2021-10-08 17:16:02,887 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) [2021-10-08 17:16:17,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:16:17,272 INFO L93 Difference]: Finished difference Result 1306 states and 4532 transitions. [2021-10-08 17:16:17,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-08 17:16:17,274 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 [2021-10-08 17:16:17,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:16:17,277 INFO L225 Difference]: With dead ends: 1306 [2021-10-08 17:16:17,277 INFO L226 Difference]: Without dead ends: 1306 [2021-10-08 17:16:17,278 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 2022.9ms TimeCoverageRelationStatistics Valid=183, Invalid=519, Unknown=0, NotChecked=0, Total=702 [2021-10-08 17:16:17,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1306 states. [2021-10-08 17:16:17,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1306 to 580. [2021-10-08 17:16:17,300 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) [2021-10-08 17:16:17,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 2333 transitions. [2021-10-08 17:16:17,302 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 2333 transitions. Word has length 20 [2021-10-08 17:16:17,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:16:17,303 INFO L470 AbstractCegarLoop]: Abstraction has 580 states and 2333 transitions. [2021-10-08 17:16:17,303 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) [2021-10-08 17:16:17,303 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 2333 transitions. [2021-10-08 17:16:17,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:16:17,305 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:16:17,305 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] [2021-10-08 17:16:17,317 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (97)] Ended with exit code 0 [2021-10-08 17:16:17,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:16:17,506 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)] === [2021-10-08 17:16:17,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:16:17,506 INFO L82 PathProgramCache]: Analyzing trace with hash 2081710485, now seen corresponding path program 32 times [2021-10-08 17:16:17,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:16:17,507 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1816611917] [2021-10-08 17:16:17,507 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:16:17,508 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:16:17,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:16:17,511 INFO L229 MonitoredProcess]: Starting monitored process 98 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:16:17,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (98)] Waiting until timeout for monitored process [2021-10-08 17:16:18,465 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:16:18,465 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:16:18,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:16:18,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:16:18,735 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:16:18,735 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:16:19,596 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:16:19,596 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:16:19,596 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1816611917] [2021-10-08 17:16:19,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1816611917] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:16:19,596 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:16:19,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2021-10-08 17:16:19,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453165852] [2021-10-08 17:16:19,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 17:16:19,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:16:19,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 17:16:19,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-10-08 17:16:19,598 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) [2021-10-08 17:16:32,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:16:32,774 INFO L93 Difference]: Finished difference Result 1156 states and 4062 transitions. [2021-10-08 17:16:32,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-08 17:16:32,776 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 [2021-10-08 17:16:32,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:16:32,780 INFO L225 Difference]: With dead ends: 1156 [2021-10-08 17:16:32,780 INFO L226 Difference]: Without dead ends: 1152 [2021-10-08 17:16:32,780 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 2482.9ms TimeCoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2021-10-08 17:16:32,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1152 states. [2021-10-08 17:16:32,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1152 to 588. [2021-10-08 17:16:32,795 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) [2021-10-08 17:16:32,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 2367 transitions. [2021-10-08 17:16:32,797 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 2367 transitions. Word has length 20 [2021-10-08 17:16:32,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:16:32,797 INFO L470 AbstractCegarLoop]: Abstraction has 588 states and 2367 transitions. [2021-10-08 17:16:32,798 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) [2021-10-08 17:16:32,798 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 2367 transitions. [2021-10-08 17:16:32,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:16:32,799 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:16:32,800 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:16:32,815 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (98)] Forceful destruction successful, exit code 0 [2021-10-08 17:16:33,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 98 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:16:33,005 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)] === [2021-10-08 17:16:33,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:16:33,006 INFO L82 PathProgramCache]: Analyzing trace with hash -1710230663, now seen corresponding path program 15 times [2021-10-08 17:16:33,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:16:33,007 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1861390233] [2021-10-08 17:16:33,007 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:16:33,007 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:16:33,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:16:33,008 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) [2021-10-08 17:16:33,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (99)] Waiting until timeout for monitored process [2021-10-08 17:16:34,039 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-08 17:16:34,039 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:16:34,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:16:34,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:16:34,317 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:16:34,317 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:16:38,204 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:16:38,204 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:16:38,205 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1861390233] [2021-10-08 17:16:38,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1861390233] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:16:38,205 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:16:38,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-10-08 17:16:38,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265547102] [2021-10-08 17:16:38,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 17:16:38,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:16:38,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 17:16:38,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2021-10-08 17:16:38,208 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) [2021-10-08 17:16:52,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:16:52,062 INFO L93 Difference]: Finished difference Result 1094 states and 3775 transitions. [2021-10-08 17:16:52,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-08 17:16:52,066 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 [2021-10-08 17:16:52,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:16:52,070 INFO L225 Difference]: With dead ends: 1094 [2021-10-08 17:16:52,071 INFO L226 Difference]: Without dead ends: 1094 [2021-10-08 17:16:52,071 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 8465.9ms TimeCoverageRelationStatistics Valid=243, Invalid=627, Unknown=0, NotChecked=0, Total=870 [2021-10-08 17:16:52,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1094 states. [2021-10-08 17:16:52,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1094 to 586. [2021-10-08 17:16:52,093 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) [2021-10-08 17:16:52,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 2354 transitions. [2021-10-08 17:16:52,096 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 2354 transitions. Word has length 20 [2021-10-08 17:16:52,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:16:52,101 INFO L470 AbstractCegarLoop]: Abstraction has 586 states and 2354 transitions. [2021-10-08 17:16:52,106 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) [2021-10-08 17:16:52,106 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 2354 transitions. [2021-10-08 17:16:52,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:16:52,108 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:16:52,109 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] [2021-10-08 17:16:52,132 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (99)] Forceful destruction successful, exit code 0 [2021-10-08 17:16:52,321 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 [2021-10-08 17:16:52,322 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)] === [2021-10-08 17:16:52,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:16:52,322 INFO L82 PathProgramCache]: Analyzing trace with hash -1521567695, now seen corresponding path program 33 times [2021-10-08 17:16:52,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:16:52,323 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1140376055] [2021-10-08 17:16:52,323 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:16:52,323 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:16:52,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:16:52,325 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) [2021-10-08 17:16:52,326 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (100)] Waiting until timeout for monitored process [2021-10-08 17:16:53,327 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-08 17:16:53,327 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:16:53,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-08 17:16:53,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:16:53,466 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:16:53,466 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:16:53,585 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:16:53,586 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:16:53,586 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1140376055] [2021-10-08 17:16:53,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1140376055] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:16:53,586 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:16:53,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 7 [2021-10-08 17:16:53,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164559637] [2021-10-08 17:16:53,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-08 17:16:53,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:16:53,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-08 17:16:53,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-08 17:16:53,587 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) [2021-10-08 17:16:53,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:16:53,905 INFO L93 Difference]: Finished difference Result 836 states and 3135 transitions. [2021-10-08 17:16:53,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 17:16:53,905 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 [2021-10-08 17:16:53,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:16:53,907 INFO L225 Difference]: With dead ends: 836 [2021-10-08 17:16:53,908 INFO L226 Difference]: Without dead ends: 822 [2021-10-08 17:16:53,908 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 136.2ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-08 17:16:53,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2021-10-08 17:16:53,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 618. [2021-10-08 17:16:53,919 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) [2021-10-08 17:16:53,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 2475 transitions. [2021-10-08 17:16:53,921 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 2475 transitions. Word has length 20 [2021-10-08 17:16:53,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:16:53,921 INFO L470 AbstractCegarLoop]: Abstraction has 618 states and 2475 transitions. [2021-10-08 17:16:53,921 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) [2021-10-08 17:16:53,921 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 2475 transitions. [2021-10-08 17:16:53,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:16:53,923 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:16:53,923 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] [2021-10-08 17:16:53,939 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (100)] Forceful destruction successful, exit code 0 [2021-10-08 17:16:54,131 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 [2021-10-08 17:16:54,131 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)] === [2021-10-08 17:16:54,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:16:54,132 INFO L82 PathProgramCache]: Analyzing trace with hash -1390924777, now seen corresponding path program 44 times [2021-10-08 17:16:54,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:16:54,133 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [909156472] [2021-10-08 17:16:54,133 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:16:54,133 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:16:54,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:16:54,134 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) [2021-10-08 17:16:54,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (101)] Waiting until timeout for monitored process [2021-10-08 17:16:55,170 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:16:55,170 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:16:55,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:16:55,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:16:55,380 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:16:55,380 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:16:56,174 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:16:56,174 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:16:56,174 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [909156472] [2021-10-08 17:16:56,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [909156472] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-08 17:16:56,174 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 17:16:56,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 12 [2021-10-08 17:16:56,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374684421] [2021-10-08 17:16:56,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-08 17:16:56,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:16:56,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-08 17:16:56,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-10-08 17:16:56,176 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) [2021-10-08 17:16:56,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:16:56,701 INFO L93 Difference]: Finished difference Result 868 states and 3243 transitions. [2021-10-08 17:16:56,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-08 17:16:56,702 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 [2021-10-08 17:16:56,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:16:56,704 INFO L225 Difference]: With dead ends: 868 [2021-10-08 17:16:56,704 INFO L226 Difference]: Without dead ends: 866 [2021-10-08 17:16:56,704 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 761.5ms TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2021-10-08 17:16:56,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2021-10-08 17:16:56,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 620. [2021-10-08 17:16:56,718 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) [2021-10-08 17:16:56,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 2480 transitions. [2021-10-08 17:16:56,720 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 2480 transitions. Word has length 20 [2021-10-08 17:16:56,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:16:56,720 INFO L470 AbstractCegarLoop]: Abstraction has 620 states and 2480 transitions. [2021-10-08 17:16:56,720 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) [2021-10-08 17:16:56,720 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 2480 transitions. [2021-10-08 17:16:56,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:16:56,722 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:16:56,722 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] [2021-10-08 17:16:56,735 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (101)] Forceful destruction successful, exit code 0 [2021-10-08 17:16:56,922 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 [2021-10-08 17:16:56,923 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)] === [2021-10-08 17:16:56,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:16:56,923 INFO L82 PathProgramCache]: Analyzing trace with hash 603951791, now seen corresponding path program 45 times [2021-10-08 17:16:56,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:16:56,924 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1339443788] [2021-10-08 17:16:56,924 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:16:56,924 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:16:56,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:16:56,926 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) [2021-10-08 17:16:56,927 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (102)] Waiting until timeout for monitored process [2021-10-08 17:16:57,913 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-08 17:16:57,914 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:16:57,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:16:57,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:16:58,264 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:16:58,264 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:16:58,983 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:16:58,983 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:16:58,983 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1339443788] [2021-10-08 17:16:58,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1339443788] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:16:58,984 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:16:58,984 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-10-08 17:16:58,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74392486] [2021-10-08 17:16:58,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 17:16:58,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:16:58,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 17:16:58,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-10-08 17:16:58,985 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) [2021-10-08 17:17:09,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:17:09,120 INFO L93 Difference]: Finished difference Result 1340 states and 4508 transitions. [2021-10-08 17:17:09,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-08 17:17:09,124 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 [2021-10-08 17:17:09,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:17:09,128 INFO L225 Difference]: With dead ends: 1340 [2021-10-08 17:17:09,128 INFO L226 Difference]: Without dead ends: 1340 [2021-10-08 17:17:09,128 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 3683.4ms TimeCoverageRelationStatistics Valid=232, Invalid=580, Unknown=0, NotChecked=0, Total=812 [2021-10-08 17:17:09,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1340 states. [2021-10-08 17:17:09,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1340 to 624. [2021-10-08 17:17:09,145 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) [2021-10-08 17:17:09,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 624 states to 624 states and 2512 transitions. [2021-10-08 17:17:09,148 INFO L78 Accepts]: Start accepts. Automaton has 624 states and 2512 transitions. Word has length 20 [2021-10-08 17:17:09,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:17:09,148 INFO L470 AbstractCegarLoop]: Abstraction has 624 states and 2512 transitions. [2021-10-08 17:17:09,148 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) [2021-10-08 17:17:09,148 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states and 2512 transitions. [2021-10-08 17:17:09,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:17:09,150 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:17:09,150 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] [2021-10-08 17:17:09,163 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (102)] Forceful destruction successful, exit code 0 [2021-10-08 17:17:09,350 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 [2021-10-08 17:17:09,351 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)] === [2021-10-08 17:17:09,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:17:09,351 INFO L82 PathProgramCache]: Analyzing trace with hash 591325361, now seen corresponding path program 34 times [2021-10-08 17:17:09,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:17:09,352 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [182057775] [2021-10-08 17:17:09,352 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 17:17:09,352 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:17:09,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:17:09,354 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) [2021-10-08 17:17:09,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (103)] Waiting until timeout for monitored process [2021-10-08 17:17:10,320 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 17:17:10,320 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:17:10,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:17:10,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:17:10,538 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:17:10,538 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:17:11,330 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:17:11,331 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:17:11,331 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [182057775] [2021-10-08 17:17:11,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [182057775] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-08 17:17:11,331 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 17:17:11,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-10-08 17:17:11,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899106851] [2021-10-08 17:17:11,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-08 17:17:11,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:17:11,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-08 17:17:11,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-10-08 17:17:11,333 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) [2021-10-08 17:17:11,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:17:11,673 INFO L93 Difference]: Finished difference Result 826 states and 3107 transitions. [2021-10-08 17:17:11,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 17:17:11,675 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 [2021-10-08 17:17:11,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:17:11,677 INFO L225 Difference]: With dead ends: 826 [2021-10-08 17:17:11,677 INFO L226 Difference]: Without dead ends: 826 [2021-10-08 17:17:11,678 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 629.6ms TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-10-08 17:17:11,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 826 states. [2021-10-08 17:17:11,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 826 to 628. [2021-10-08 17:17:11,690 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) [2021-10-08 17:17:11,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 2528 transitions. [2021-10-08 17:17:11,693 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 2528 transitions. Word has length 20 [2021-10-08 17:17:11,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:17:11,693 INFO L470 AbstractCegarLoop]: Abstraction has 628 states and 2528 transitions. [2021-10-08 17:17:11,693 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) [2021-10-08 17:17:11,693 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 2528 transitions. [2021-10-08 17:17:11,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:17:11,694 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:17:11,695 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] [2021-10-08 17:17:11,708 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (103)] Ended with exit code 0 [2021-10-08 17:17:11,895 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 [2021-10-08 17:17:11,895 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)] === [2021-10-08 17:17:11,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:17:11,896 INFO L82 PathProgramCache]: Analyzing trace with hash 1560987281, now seen corresponding path program 35 times [2021-10-08 17:17:11,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:17:11,897 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1061453566] [2021-10-08 17:17:11,897 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 17:17:11,897 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:17:11,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:17:11,898 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) [2021-10-08 17:17:11,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (104)] Waiting until timeout for monitored process [2021-10-08 17:17:12,837 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:17:12,838 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:17:12,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:17:12,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:17:13,074 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:17:13,075 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:17:13,818 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:17:13,819 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:17:13,819 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1061453566] [2021-10-08 17:17:13,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1061453566] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-08 17:17:13,819 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 17:17:13,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-10-08 17:17:13,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101777545] [2021-10-08 17:17:13,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-08 17:17:13,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:17:13,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-08 17:17:13,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-08 17:17:13,821 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) [2021-10-08 17:17:14,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:17:14,155 INFO L93 Difference]: Finished difference Result 812 states and 3075 transitions. [2021-10-08 17:17:14,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 17:17:14,157 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 [2021-10-08 17:17:14,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:17:14,159 INFO L225 Difference]: With dead ends: 812 [2021-10-08 17:17:14,159 INFO L226 Difference]: Without dead ends: 804 [2021-10-08 17:17:14,160 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 589.2ms TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2021-10-08 17:17:14,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2021-10-08 17:17:14,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 628. [2021-10-08 17:17:14,173 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) [2021-10-08 17:17:14,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 2524 transitions. [2021-10-08 17:17:14,176 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 2524 transitions. Word has length 20 [2021-10-08 17:17:14,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:17:14,176 INFO L470 AbstractCegarLoop]: Abstraction has 628 states and 2524 transitions. [2021-10-08 17:17:14,177 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) [2021-10-08 17:17:14,177 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 2524 transitions. [2021-10-08 17:17:14,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:17:14,179 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:17:14,179 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] [2021-10-08 17:17:14,194 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (104)] Forceful destruction successful, exit code 0 [2021-10-08 17:17:14,390 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 [2021-10-08 17:17:14,391 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)] === [2021-10-08 17:17:14,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:17:14,391 INFO L82 PathProgramCache]: Analyzing trace with hash -88733009, now seen corresponding path program 46 times [2021-10-08 17:17:14,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:17:14,392 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [583381065] [2021-10-08 17:17:14,392 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 17:17:14,392 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:17:14,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:17:14,394 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) [2021-10-08 17:17:14,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (105)] Waiting until timeout for monitored process [2021-10-08 17:17:15,331 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 17:17:15,331 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:17:15,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:17:15,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:17:15,624 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:17:15,624 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:17:16,559 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:17:16,560 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:17:16,560 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [583381065] [2021-10-08 17:17:16,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [583381065] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:17:16,560 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:17:16,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-10-08 17:17:16,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118309512] [2021-10-08 17:17:16,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 17:17:16,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:17:16,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 17:17:16,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-10-08 17:17:16,562 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) [2021-10-08 17:17:38,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:17:38,301 INFO L93 Difference]: Finished difference Result 1118 states and 3828 transitions. [2021-10-08 17:17:38,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-08 17:17:38,303 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 [2021-10-08 17:17:38,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:17:38,305 INFO L225 Difference]: With dead ends: 1118 [2021-10-08 17:17:38,305 INFO L226 Difference]: Without dead ends: 1118 [2021-10-08 17:17:38,306 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 4367.0ms TimeCoverageRelationStatistics Valid=268, Invalid=662, Unknown=0, NotChecked=0, Total=930 [2021-10-08 17:17:38,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1118 states. [2021-10-08 17:17:38,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1118 to 630. [2021-10-08 17:17:38,322 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) [2021-10-08 17:17:38,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 2533 transitions. [2021-10-08 17:17:38,324 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 2533 transitions. Word has length 20 [2021-10-08 17:17:38,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:17:38,324 INFO L470 AbstractCegarLoop]: Abstraction has 630 states and 2533 transitions. [2021-10-08 17:17:38,324 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) [2021-10-08 17:17:38,324 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 2533 transitions. [2021-10-08 17:17:38,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:17:38,325 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:17:38,326 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] [2021-10-08 17:17:38,340 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (105)] Forceful destruction successful, exit code 0 [2021-10-08 17:17:38,526 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 [2021-10-08 17:17:38,526 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)] === [2021-10-08 17:17:38,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:17:38,527 INFO L82 PathProgramCache]: Analyzing trace with hash 1746202321, now seen corresponding path program 16 times [2021-10-08 17:17:38,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:17:38,527 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1986580608] [2021-10-08 17:17:38,527 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 17:17:38,527 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:17:38,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:17:38,528 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) [2021-10-08 17:17:38,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (106)] Waiting until timeout for monitored process [2021-10-08 17:17:39,466 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 17:17:39,466 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:17:39,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:17:39,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:17:39,747 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:17:39,747 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:17:40,284 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:17:40,285 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:17:40,285 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1986580608] [2021-10-08 17:17:40,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1986580608] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:17:40,285 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:17:40,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-10-08 17:17:40,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372982150] [2021-10-08 17:17:40,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 17:17:40,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:17:40,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 17:17:40,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2021-10-08 17:17:40,287 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) [2021-10-08 17:17:44,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:17:44,040 INFO L93 Difference]: Finished difference Result 1294 states and 4483 transitions. [2021-10-08 17:17:44,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-08 17:17:44,041 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 [2021-10-08 17:17:44,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:17:44,044 INFO L225 Difference]: With dead ends: 1294 [2021-10-08 17:17:44,044 INFO L226 Difference]: Without dead ends: 1294 [2021-10-08 17:17:44,044 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 2760.4ms TimeCoverageRelationStatistics Valid=263, Invalid=607, Unknown=0, NotChecked=0, Total=870 [2021-10-08 17:17:44,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1294 states. [2021-10-08 17:17:44,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1294 to 626. [2021-10-08 17:17:44,060 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) [2021-10-08 17:17:44,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 2518 transitions. [2021-10-08 17:17:44,062 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 2518 transitions. Word has length 20 [2021-10-08 17:17:44,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:17:44,063 INFO L470 AbstractCegarLoop]: Abstraction has 626 states and 2518 transitions. [2021-10-08 17:17:44,063 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) [2021-10-08 17:17:44,063 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 2518 transitions. [2021-10-08 17:17:44,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:17:44,064 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:17:44,064 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] [2021-10-08 17:17:44,078 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (106)] Forceful destruction successful, exit code 0 [2021-10-08 17:17:44,264 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 [2021-10-08 17:17:44,265 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)] === [2021-10-08 17:17:44,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:17:44,266 INFO L82 PathProgramCache]: Analyzing trace with hash -1264030525, now seen corresponding path program 47 times [2021-10-08 17:17:44,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:17:44,267 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [581355707] [2021-10-08 17:17:44,267 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 17:17:44,267 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:17:44,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:17:44,269 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) [2021-10-08 17:17:44,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (107)] Waiting until timeout for monitored process [2021-10-08 17:17:45,209 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:17:45,209 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:17:45,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:17:45,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:17:45,410 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:17:45,410 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:17:45,972 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:17:45,972 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:17:45,972 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [581355707] [2021-10-08 17:17:45,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [581355707] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-08 17:17:45,972 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 17:17:45,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 12 [2021-10-08 17:17:45,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622820126] [2021-10-08 17:17:45,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-08 17:17:45,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:17:45,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-08 17:17:45,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-10-08 17:17:45,973 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) [2021-10-08 17:17:46,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:17:46,428 INFO L93 Difference]: Finished difference Result 806 states and 3066 transitions. [2021-10-08 17:17:46,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 17:17:46,429 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 [2021-10-08 17:17:46,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:17:46,431 INFO L225 Difference]: With dead ends: 806 [2021-10-08 17:17:46,431 INFO L226 Difference]: Without dead ends: 804 [2021-10-08 17:17:46,431 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 560.5ms TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2021-10-08 17:17:46,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2021-10-08 17:17:46,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 630. [2021-10-08 17:17:46,443 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) [2021-10-08 17:17:46,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 2530 transitions. [2021-10-08 17:17:46,445 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 2530 transitions. Word has length 20 [2021-10-08 17:17:46,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:17:46,445 INFO L470 AbstractCegarLoop]: Abstraction has 630 states and 2530 transitions. [2021-10-08 17:17:46,445 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) [2021-10-08 17:17:46,446 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 2530 transitions. [2021-10-08 17:17:46,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:17:46,447 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:17:46,447 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] [2021-10-08 17:17:46,461 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (107)] Ended with exit code 0 [2021-10-08 17:17:46,647 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 [2021-10-08 17:17:46,648 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)] === [2021-10-08 17:17:46,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:17:46,648 INFO L82 PathProgramCache]: Analyzing trace with hash 730846043, now seen corresponding path program 48 times [2021-10-08 17:17:46,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:17:46,649 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1467944403] [2021-10-08 17:17:46,649 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 17:17:46,650 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:17:46,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:17:46,651 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) [2021-10-08 17:17:46,654 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (108)] Waiting until timeout for monitored process [2021-10-08 17:17:47,773 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-08 17:17:47,773 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:17:47,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:17:47,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:17:48,080 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:17:48,080 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:17:48,582 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:17:48,583 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:17:48,583 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1467944403] [2021-10-08 17:17:48,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1467944403] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:17:48,583 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:17:48,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-10-08 17:17:48,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766920350] [2021-10-08 17:17:48,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 17:17:48,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:17:48,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 17:17:48,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-10-08 17:17:48,585 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) [2021-10-08 17:17:51,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:17:51,684 INFO L93 Difference]: Finished difference Result 1240 states and 4229 transitions. [2021-10-08 17:17:51,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-08 17:17:51,685 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 [2021-10-08 17:17:51,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:17:51,689 INFO L225 Difference]: With dead ends: 1240 [2021-10-08 17:17:51,689 INFO L226 Difference]: Without dead ends: 1240 [2021-10-08 17:17:51,689 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 2017.1ms TimeCoverageRelationStatistics Valid=199, Invalid=451, Unknown=0, NotChecked=0, Total=650 [2021-10-08 17:17:51,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2021-10-08 17:17:51,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 628. [2021-10-08 17:17:51,704 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) [2021-10-08 17:17:51,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 2525 transitions. [2021-10-08 17:17:51,706 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 2525 transitions. Word has length 20 [2021-10-08 17:17:51,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:17:51,706 INFO L470 AbstractCegarLoop]: Abstraction has 628 states and 2525 transitions. [2021-10-08 17:17:51,706 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) [2021-10-08 17:17:51,706 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 2525 transitions. [2021-10-08 17:17:51,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:17:51,707 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:17:51,707 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] [2021-10-08 17:17:51,721 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (108)] Forceful destruction successful, exit code 0 [2021-10-08 17:17:51,910 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 [2021-10-08 17:17:51,911 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)] === [2021-10-08 17:17:51,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:17:51,911 INFO L82 PathProgramCache]: Analyzing trace with hash -156810057, now seen corresponding path program 49 times [2021-10-08 17:17:51,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:17:51,912 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1549459798] [2021-10-08 17:17:51,912 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 17:17:51,913 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:17:51,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:17:51,914 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) [2021-10-08 17:17:51,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (109)] Waiting until timeout for monitored process [2021-10-08 17:17:52,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:17:52,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:17:52,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:17:53,078 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:17:53,078 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:17:53,506 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:17:53,506 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:17:53,506 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1549459798] [2021-10-08 17:17:53,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1549459798] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-08 17:17:53,506 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 17:17:53,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 12 [2021-10-08 17:17:53,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068519302] [2021-10-08 17:17:53,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-08 17:17:53,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:17:53,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-08 17:17:53,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-10-08 17:17:53,508 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) [2021-10-08 17:17:53,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:17:53,863 INFO L93 Difference]: Finished difference Result 798 states and 3039 transitions. [2021-10-08 17:17:53,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 17:17:53,864 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 [2021-10-08 17:17:53,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:17:53,866 INFO L225 Difference]: With dead ends: 798 [2021-10-08 17:17:53,866 INFO L226 Difference]: Without dead ends: 794 [2021-10-08 17:17:53,866 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 451.4ms TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2021-10-08 17:17:53,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 794 states. [2021-10-08 17:17:53,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 794 to 626. [2021-10-08 17:17:53,876 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) [2021-10-08 17:17:53,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 2518 transitions. [2021-10-08 17:17:53,878 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 2518 transitions. Word has length 20 [2021-10-08 17:17:53,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:17:53,878 INFO L470 AbstractCegarLoop]: Abstraction has 626 states and 2518 transitions. [2021-10-08 17:17:53,879 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) [2021-10-08 17:17:53,879 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 2518 transitions. [2021-10-08 17:17:53,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:17:53,880 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:17:53,880 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] [2021-10-08 17:17:53,898 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (109)] Forceful destruction successful, exit code 0 [2021-10-08 17:17:54,094 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 [2021-10-08 17:17:54,095 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)] === [2021-10-08 17:17:54,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:17:54,096 INFO L82 PathProgramCache]: Analyzing trace with hash -1551362619, now seen corresponding path program 36 times [2021-10-08 17:17:54,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:17:54,096 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [407206511] [2021-10-08 17:17:54,096 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 17:17:54,097 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:17:54,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:17:54,097 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) [2021-10-08 17:17:54,099 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (110)] Waiting until timeout for monitored process [2021-10-08 17:17:55,198 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-08 17:17:55,198 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:17:55,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:17:55,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:17:55,406 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:17:55,407 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:17:55,915 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:17:55,916 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:17:55,916 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [407206511] [2021-10-08 17:17:55,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [407206511] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-08 17:17:55,916 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 17:17:55,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-10-08 17:17:55,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42788482] [2021-10-08 17:17:55,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-08 17:17:55,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:17:55,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-08 17:17:55,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-10-08 17:17:55,918 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) [2021-10-08 17:17:56,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:17:56,293 INFO L93 Difference]: Finished difference Result 818 states and 3092 transitions. [2021-10-08 17:17:56,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 17:17:56,294 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 [2021-10-08 17:17:56,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:17:56,296 INFO L225 Difference]: With dead ends: 818 [2021-10-08 17:17:56,296 INFO L226 Difference]: Without dead ends: 818 [2021-10-08 17:17:56,296 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 414.5ms TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-10-08 17:17:56,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2021-10-08 17:17:56,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 630. [2021-10-08 17:17:56,317 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) [2021-10-08 17:17:56,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 2532 transitions. [2021-10-08 17:17:56,319 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 2532 transitions. Word has length 20 [2021-10-08 17:17:56,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:17:56,320 INFO L470 AbstractCegarLoop]: Abstraction has 630 states and 2532 transitions. [2021-10-08 17:17:56,320 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) [2021-10-08 17:17:56,320 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 2532 transitions. [2021-10-08 17:17:56,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:17:56,321 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:17:56,321 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] [2021-10-08 17:17:56,336 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (110)] Ended with exit code 0 [2021-10-08 17:17:56,522 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 [2021-10-08 17:17:56,522 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)] === [2021-10-08 17:17:56,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:17:56,523 INFO L82 PathProgramCache]: Analyzing trace with hash 555421501, now seen corresponding path program 37 times [2021-10-08 17:17:56,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:17:56,523 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1540071655] [2021-10-08 17:17:56,523 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 17:17:56,523 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:17:56,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:17:56,524 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) [2021-10-08 17:17:56,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (111)] Waiting until timeout for monitored process [2021-10-08 17:17:57,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:17:57,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:17:57,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:17:57,686 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:17:57,686 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:17:58,275 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:17:58,275 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:17:58,275 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1540071655] [2021-10-08 17:17:58,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1540071655] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-08 17:17:58,275 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 17:17:58,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-10-08 17:17:58,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102666965] [2021-10-08 17:17:58,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-08 17:17:58,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:17:58,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-08 17:17:58,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-10-08 17:17:58,277 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) [2021-10-08 17:17:58,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:17:58,606 INFO L93 Difference]: Finished difference Result 804 states and 3047 transitions. [2021-10-08 17:17:58,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 17:17:58,607 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 [2021-10-08 17:17:58,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:17:58,609 INFO L225 Difference]: With dead ends: 804 [2021-10-08 17:17:58,609 INFO L226 Difference]: Without dead ends: 804 [2021-10-08 17:17:58,609 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 490.7ms TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2021-10-08 17:17:58,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2021-10-08 17:17:58,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 632. [2021-10-08 17:17:58,620 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) [2021-10-08 17:17:58,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 632 states to 632 states and 2541 transitions. [2021-10-08 17:17:58,622 INFO L78 Accepts]: Start accepts. Automaton has 632 states and 2541 transitions. Word has length 20 [2021-10-08 17:17:58,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:17:58,623 INFO L470 AbstractCegarLoop]: Abstraction has 632 states and 2541 transitions. [2021-10-08 17:17:58,623 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) [2021-10-08 17:17:58,623 INFO L276 IsEmpty]: Start isEmpty. Operand 632 states and 2541 transitions. [2021-10-08 17:17:58,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:17:58,624 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:17:58,624 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] [2021-10-08 17:17:58,637 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (111)] Forceful destruction successful, exit code 0 [2021-10-08 17:17:58,824 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 [2021-10-08 17:17:58,825 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)] === [2021-10-08 17:17:58,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:17:58,825 INFO L82 PathProgramCache]: Analyzing trace with hash 1525083421, now seen corresponding path program 38 times [2021-10-08 17:17:58,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:17:58,826 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [400888622] [2021-10-08 17:17:58,826 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:17:58,827 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:17:58,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:17:58,828 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) [2021-10-08 17:17:58,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (112)] Waiting until timeout for monitored process [2021-10-08 17:17:59,882 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:17:59,882 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:17:59,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-08 17:17:59,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:18:00,002 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:18:00,003 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:18:00,091 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:18:00,091 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:18:00,091 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [400888622] [2021-10-08 17:18:00,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [400888622] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:18:00,092 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:18:00,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 7 [2021-10-08 17:18:00,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399121329] [2021-10-08 17:18:00,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-08 17:18:00,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:18:00,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-08 17:18:00,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-08 17:18:00,093 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) [2021-10-08 17:18:00,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:18:00,325 INFO L93 Difference]: Finished difference Result 808 states and 3078 transitions. [2021-10-08 17:18:00,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 17:18:00,326 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 [2021-10-08 17:18:00,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:18:00,328 INFO L225 Difference]: With dead ends: 808 [2021-10-08 17:18:00,328 INFO L226 Difference]: Without dead ends: 794 [2021-10-08 17:18:00,328 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 146.3ms TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-10-08 17:18:00,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 794 states. [2021-10-08 17:18:00,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 794 to 642. [2021-10-08 17:18:00,346 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) [2021-10-08 17:18:00,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 2571 transitions. [2021-10-08 17:18:00,349 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 2571 transitions. Word has length 20 [2021-10-08 17:18:00,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:18:00,350 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 2571 transitions. [2021-10-08 17:18:00,350 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) [2021-10-08 17:18:00,350 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 2571 transitions. [2021-10-08 17:18:00,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:18:00,352 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:18:00,352 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] [2021-10-08 17:18:00,373 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (112)] Forceful destruction successful, exit code 0 [2021-10-08 17:18:00,565 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 [2021-10-08 17:18:00,566 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)] === [2021-10-08 17:18:00,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:18:00,566 INFO L82 PathProgramCache]: Analyzing trace with hash -1432080189, now seen corresponding path program 50 times [2021-10-08 17:18:00,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:18:00,567 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1933975212] [2021-10-08 17:18:00,567 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:18:00,567 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:18:00,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:18:00,569 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) [2021-10-08 17:18:00,570 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (113)] Waiting until timeout for monitored process [2021-10-08 17:18:01,738 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:18:01,739 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:18:01,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:18:01,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:18:01,945 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:18:01,945 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:18:02,708 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:18:02,709 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:18:02,709 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1933975212] [2021-10-08 17:18:02,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1933975212] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-08 17:18:02,709 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 17:18:02,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 12 [2021-10-08 17:18:02,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977586123] [2021-10-08 17:18:02,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-08 17:18:02,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:18:02,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-08 17:18:02,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-08 17:18:02,710 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) [2021-10-08 17:18:03,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:18:03,139 INFO L93 Difference]: Finished difference Result 796 states and 3047 transitions. [2021-10-08 17:18:03,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 17:18:03,140 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 [2021-10-08 17:18:03,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:18:03,143 INFO L225 Difference]: With dead ends: 796 [2021-10-08 17:18:03,143 INFO L226 Difference]: Without dead ends: 794 [2021-10-08 17:18:03,144 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 740.6ms TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2021-10-08 17:18:03,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 794 states. [2021-10-08 17:18:03,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 794 to 642. [2021-10-08 17:18:03,162 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) [2021-10-08 17:18:03,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 2569 transitions. [2021-10-08 17:18:03,166 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 2569 transitions. Word has length 20 [2021-10-08 17:18:03,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:18:03,166 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 2569 transitions. [2021-10-08 17:18:03,166 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) [2021-10-08 17:18:03,166 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 2569 transitions. [2021-10-08 17:18:03,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:18:03,169 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:18:03,169 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] [2021-10-08 17:18:03,193 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (113)] Forceful destruction successful, exit code 0 [2021-10-08 17:18:03,384 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 [2021-10-08 17:18:03,384 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)] === [2021-10-08 17:18:03,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:18:03,385 INFO L82 PathProgramCache]: Analyzing trace with hash -124636869, now seen corresponding path program 51 times [2021-10-08 17:18:03,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:18:03,386 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1082871583] [2021-10-08 17:18:03,386 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:18:03,386 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:18:03,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:18:03,388 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) [2021-10-08 17:18:03,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (114)] Waiting until timeout for monitored process [2021-10-08 17:18:04,454 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-08 17:18:04,454 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:18:04,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:18:04,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:18:04,698 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:18:04,698 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:18:06,359 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:18:06,359 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:18:06,359 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1082871583] [2021-10-08 17:18:06,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1082871583] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:18:06,360 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:18:06,360 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-10-08 17:18:06,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214427277] [2021-10-08 17:18:06,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 17:18:06,360 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:18:06,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 17:18:06,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2021-10-08 17:18:06,361 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) [2021-10-08 17:18:19,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:18:19,241 INFO L93 Difference]: Finished difference Result 962 states and 3470 transitions. [2021-10-08 17:18:19,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-08 17:18:19,242 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 [2021-10-08 17:18:19,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:18:19,244 INFO L225 Difference]: With dead ends: 962 [2021-10-08 17:18:19,244 INFO L226 Difference]: Without dead ends: 962 [2021-10-08 17:18:19,245 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 6100.2ms TimeCoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2021-10-08 17:18:19,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 962 states. [2021-10-08 17:18:19,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 962 to 642. [2021-10-08 17:18:19,257 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) [2021-10-08 17:18:19,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 2569 transitions. [2021-10-08 17:18:19,259 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 2569 transitions. Word has length 20 [2021-10-08 17:18:19,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:18:19,259 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 2569 transitions. [2021-10-08 17:18:19,260 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) [2021-10-08 17:18:19,260 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 2569 transitions. [2021-10-08 17:18:19,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:18:19,261 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:18:19,261 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] [2021-10-08 17:18:19,274 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (114)] Ended with exit code 0 [2021-10-08 17:18:19,463 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 [2021-10-08 17:18:19,463 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)] === [2021-10-08 17:18:19,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:18:19,464 INFO L82 PathProgramCache]: Analyzing trace with hash -319608169, now seen corresponding path program 52 times [2021-10-08 17:18:19,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:18:19,465 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [541697812] [2021-10-08 17:18:19,465 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 17:18:19,465 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:18:19,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:18:19,466 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) [2021-10-08 17:18:19,467 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (115)] Waiting until timeout for monitored process [2021-10-08 17:18:20,458 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 17:18:20,459 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:18:20,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:18:20,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:18:20,646 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:18:20,646 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:18:21,366 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:18:21,366 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:18:21,367 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [541697812] [2021-10-08 17:18:21,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [541697812] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-08 17:18:21,367 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 17:18:21,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 12 [2021-10-08 17:18:21,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829578629] [2021-10-08 17:18:21,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-08 17:18:21,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:18:21,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-08 17:18:21,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-10-08 17:18:21,368 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) [2021-10-08 17:18:21,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:18:21,634 INFO L93 Difference]: Finished difference Result 776 states and 3004 transitions. [2021-10-08 17:18:21,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 17:18:21,635 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 [2021-10-08 17:18:21,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:18:21,636 INFO L225 Difference]: With dead ends: 776 [2021-10-08 17:18:21,637 INFO L226 Difference]: Without dead ends: 772 [2021-10-08 17:18:21,637 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 730.0ms TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2021-10-08 17:18:21,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2021-10-08 17:18:21,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 642. [2021-10-08 17:18:21,647 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) [2021-10-08 17:18:21,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 2567 transitions. [2021-10-08 17:18:21,649 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 2567 transitions. Word has length 20 [2021-10-08 17:18:21,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:18:21,650 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 2567 transitions. [2021-10-08 17:18:21,650 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) [2021-10-08 17:18:21,650 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 2567 transitions. [2021-10-08 17:18:21,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:18:21,651 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:18:21,651 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] [2021-10-08 17:18:21,664 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (115)] Ended with exit code 0 [2021-10-08 17:18:21,855 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 [2021-10-08 17:18:21,855 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)] === [2021-10-08 17:18:21,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:18:21,856 INFO L82 PathProgramCache]: Analyzing trace with hash 1936955337, now seen corresponding path program 39 times [2021-10-08 17:18:21,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:18:21,856 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1556070351] [2021-10-08 17:18:21,856 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:18:21,856 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:18:21,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:18:21,859 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) [2021-10-08 17:18:21,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (116)] Waiting until timeout for monitored process [2021-10-08 17:18:23,071 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-08 17:18:23,071 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:18:23,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:18:23,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:18:23,370 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:18:23,371 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:18:23,844 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:18:23,844 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:18:23,845 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1556070351] [2021-10-08 17:18:23,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1556070351] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:18:23,845 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:18:23,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-10-08 17:18:23,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690632439] [2021-10-08 17:18:23,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 17:18:23,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:18:23,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 17:18:23,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-10-08 17:18:23,846 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) [2021-10-08 17:18:24,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:18:24,969 INFO L93 Difference]: Finished difference Result 952 states and 3447 transitions. [2021-10-08 17:18:24,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-08 17:18:24,970 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 [2021-10-08 17:18:24,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:18:24,974 INFO L225 Difference]: With dead ends: 952 [2021-10-08 17:18:24,974 INFO L226 Difference]: Without dead ends: 952 [2021-10-08 17:18:24,974 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 628.4ms TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2021-10-08 17:18:24,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 952 states. [2021-10-08 17:18:24,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 952 to 628. [2021-10-08 17:18:24,987 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) [2021-10-08 17:18:24,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 2522 transitions. [2021-10-08 17:18:24,990 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 2522 transitions. Word has length 20 [2021-10-08 17:18:24,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:18:24,990 INFO L470 AbstractCegarLoop]: Abstraction has 628 states and 2522 transitions. [2021-10-08 17:18:24,990 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) [2021-10-08 17:18:24,990 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 2522 transitions. [2021-10-08 17:18:24,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:18:24,991 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:18:24,992 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] [2021-10-08 17:18:25,006 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (116)] Ended with exit code 0 [2021-10-08 17:18:25,192 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 [2021-10-08 17:18:25,192 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)] === [2021-10-08 17:18:25,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:18:25,193 INFO L82 PathProgramCache]: Analyzing trace with hash 316225693, now seen corresponding path program 17 times [2021-10-08 17:18:25,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:18:25,193 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [845023401] [2021-10-08 17:18:25,193 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 17:18:25,193 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:18:25,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:18:25,194 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) [2021-10-08 17:18:25,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (117)] Waiting until timeout for monitored process [2021-10-08 17:18:26,242 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:18:26,242 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:18:26,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:18:26,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:18:26,492 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:18:26,492 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:18:27,807 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:18:27,807 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:18:27,808 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [845023401] [2021-10-08 17:18:27,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [845023401] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-08 17:18:27,808 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 17:18:27,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-10-08 17:18:27,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903824620] [2021-10-08 17:18:27,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-08 17:18:27,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:18:27,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-08 17:18:27,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-10-08 17:18:27,809 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) [2021-10-08 17:18:28,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:18:28,227 INFO L93 Difference]: Finished difference Result 964 states and 3588 transitions. [2021-10-08 17:18:28,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 17:18:28,227 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 [2021-10-08 17:18:28,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:18:28,230 INFO L225 Difference]: With dead ends: 964 [2021-10-08 17:18:28,230 INFO L226 Difference]: Without dead ends: 964 [2021-10-08 17:18:28,230 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1257.9ms TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-10-08 17:18:28,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 964 states. [2021-10-08 17:18:28,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 964 to 634. [2021-10-08 17:18:28,242 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) [2021-10-08 17:18:28,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 2556 transitions. [2021-10-08 17:18:28,244 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 2556 transitions. Word has length 20 [2021-10-08 17:18:28,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:18:28,245 INFO L470 AbstractCegarLoop]: Abstraction has 634 states and 2556 transitions. [2021-10-08 17:18:28,245 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) [2021-10-08 17:18:28,245 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 2556 transitions. [2021-10-08 17:18:28,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:18:28,253 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:18:28,253 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] [2021-10-08 17:18:28,271 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (117)] Forceful destruction successful, exit code 0 [2021-10-08 17:18:28,466 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 [2021-10-08 17:18:28,466 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)] === [2021-10-08 17:18:28,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:18:28,467 INFO L82 PathProgramCache]: Analyzing trace with hash -2144091191, now seen corresponding path program 40 times [2021-10-08 17:18:28,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:18:28,468 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1617524843] [2021-10-08 17:18:28,468 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 17:18:28,468 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:18:28,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:18:28,469 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) [2021-10-08 17:18:28,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (118)] Waiting until timeout for monitored process [2021-10-08 17:18:29,484 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 17:18:29,484 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:18:29,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:18:29,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:18:29,766 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:18:29,766 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:18:30,301 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:18:30,302 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:18:30,302 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1617524843] [2021-10-08 17:18:30,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1617524843] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:18:30,302 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:18:30,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-10-08 17:18:30,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520222240] [2021-10-08 17:18:30,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 17:18:30,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:18:30,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 17:18:30,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-10-08 17:18:30,303 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) [2021-10-08 17:18:34,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:18:34,357 INFO L93 Difference]: Finished difference Result 1292 states and 4421 transitions. [2021-10-08 17:18:34,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-08 17:18:34,357 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 [2021-10-08 17:18:34,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:18:34,361 INFO L225 Difference]: With dead ends: 1292 [2021-10-08 17:18:34,361 INFO L226 Difference]: Without dead ends: 1292 [2021-10-08 17:18:34,362 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1027.8ms TimeCoverageRelationStatistics Valid=141, Invalid=279, Unknown=0, NotChecked=0, Total=420 [2021-10-08 17:18:34,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1292 states. [2021-10-08 17:18:34,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1292 to 640. [2021-10-08 17:18:34,378 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) [2021-10-08 17:18:34,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 2595 transitions. [2021-10-08 17:18:34,380 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 2595 transitions. Word has length 20 [2021-10-08 17:18:34,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:18:34,381 INFO L470 AbstractCegarLoop]: Abstraction has 640 states and 2595 transitions. [2021-10-08 17:18:34,381 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) [2021-10-08 17:18:34,381 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 2595 transitions. [2021-10-08 17:18:34,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:18:34,382 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:18:34,382 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] [2021-10-08 17:18:34,395 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (118)] Forceful destruction successful, exit code 0 [2021-10-08 17:18:34,582 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 [2021-10-08 17:18:34,583 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)] === [2021-10-08 17:18:34,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:18:34,583 INFO L82 PathProgramCache]: Analyzing trace with hash -1857060407, now seen corresponding path program 41 times [2021-10-08 17:18:34,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:18:34,584 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2010214148] [2021-10-08 17:18:34,584 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 17:18:34,584 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:18:34,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:18:34,586 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) [2021-10-08 17:18:34,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (119)] Waiting until timeout for monitored process [2021-10-08 17:18:35,658 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:18:35,659 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:18:35,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:18:35,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:18:35,974 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:18:35,975 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:18:36,759 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:18:36,760 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:18:36,760 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2010214148] [2021-10-08 17:18:36,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2010214148] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:18:36,760 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:18:36,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-10-08 17:18:36,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047434670] [2021-10-08 17:18:36,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 17:18:36,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:18:36,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 17:18:36,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-10-08 17:18:36,761 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) [2021-10-08 17:18:43,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:18:43,257 INFO L93 Difference]: Finished difference Result 1206 states and 4202 transitions. [2021-10-08 17:18:43,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-08 17:18:43,258 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 [2021-10-08 17:18:43,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:18:43,262 INFO L225 Difference]: With dead ends: 1206 [2021-10-08 17:18:43,263 INFO L226 Difference]: Without dead ends: 1206 [2021-10-08 17:18:43,263 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 1429.2ms TimeCoverageRelationStatistics Valid=183, Invalid=323, Unknown=0, NotChecked=0, Total=506 [2021-10-08 17:18:43,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1206 states. [2021-10-08 17:18:43,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1206 to 632. [2021-10-08 17:18:43,287 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) [2021-10-08 17:18:43,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 632 states to 632 states and 2543 transitions. [2021-10-08 17:18:43,291 INFO L78 Accepts]: Start accepts. Automaton has 632 states and 2543 transitions. Word has length 20 [2021-10-08 17:18:43,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:18:43,291 INFO L470 AbstractCegarLoop]: Abstraction has 632 states and 2543 transitions. [2021-10-08 17:18:43,291 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) [2021-10-08 17:18:43,291 INFO L276 IsEmpty]: Start isEmpty. Operand 632 states and 2543 transitions. [2021-10-08 17:18:43,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:18:43,293 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:18:43,293 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] [2021-10-08 17:18:43,309 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (119)] Ended with exit code 0 [2021-10-08 17:18:43,494 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 [2021-10-08 17:18:43,494 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)] === [2021-10-08 17:18:43,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:18:43,495 INFO L82 PathProgramCache]: Analyzing trace with hash -789226003, now seen corresponding path program 18 times [2021-10-08 17:18:43,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:18:43,495 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [628057415] [2021-10-08 17:18:43,495 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 17:18:43,495 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:18:43,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:18:43,496 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) [2021-10-08 17:18:43,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (120)] Waiting until timeout for monitored process [2021-10-08 17:18:44,701 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-08 17:18:44,701 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:18:44,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:18:44,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:18:44,938 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:18:44,938 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:18:45,650 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:18:45,650 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:18:45,650 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [628057415] [2021-10-08 17:18:45,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [628057415] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-08 17:18:45,650 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 17:18:45,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-10-08 17:18:45,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005535613] [2021-10-08 17:18:45,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-08 17:18:45,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:18:45,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-08 17:18:45,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-10-08 17:18:45,652 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) [2021-10-08 17:18:46,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:18:46,121 INFO L93 Difference]: Finished difference Result 876 states and 3290 transitions. [2021-10-08 17:18:46,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 17:18:46,122 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 [2021-10-08 17:18:46,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:18:46,124 INFO L225 Difference]: With dead ends: 876 [2021-10-08 17:18:46,124 INFO L226 Difference]: Without dead ends: 876 [2021-10-08 17:18:46,124 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 558.6ms TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-10-08 17:18:46,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2021-10-08 17:18:46,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 632. [2021-10-08 17:18:46,145 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) [2021-10-08 17:18:46,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 632 states to 632 states and 2543 transitions. [2021-10-08 17:18:46,149 INFO L78 Accepts]: Start accepts. Automaton has 632 states and 2543 transitions. Word has length 20 [2021-10-08 17:18:46,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:18:46,149 INFO L470 AbstractCegarLoop]: Abstraction has 632 states and 2543 transitions. [2021-10-08 17:18:46,149 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) [2021-10-08 17:18:46,149 INFO L276 IsEmpty]: Start isEmpty. Operand 632 states and 2543 transitions. [2021-10-08 17:18:46,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:18:46,152 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:18:46,152 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] [2021-10-08 17:18:46,174 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (120)] Forceful destruction successful, exit code 0 [2021-10-08 17:18:46,367 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 [2021-10-08 17:18:46,368 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)] === [2021-10-08 17:18:46,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:18:46,368 INFO L82 PathProgramCache]: Analyzing trace with hash -1327010709, now seen corresponding path program 53 times [2021-10-08 17:18:46,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:18:46,369 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [936402711] [2021-10-08 17:18:46,369 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 17:18:46,369 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:18:46,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:18:46,370 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) [2021-10-08 17:18:46,380 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (121)] Waiting until timeout for monitored process [2021-10-08 17:18:47,571 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:18:47,572 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:18:47,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:18:47,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:18:47,870 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:18:47,871 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:18:52,838 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:18:52,838 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:18:52,838 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [936402711] [2021-10-08 17:18:52,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [936402711] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-08 17:18:52,839 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 17:18:52,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2021-10-08 17:18:52,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513685649] [2021-10-08 17:18:52,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-08 17:18:52,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:18:52,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-08 17:18:52,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=112, Unknown=2, NotChecked=0, Total=156 [2021-10-08 17:18:52,840 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) [2021-10-08 17:18:53,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:18:53,409 INFO L93 Difference]: Finished difference Result 962 states and 3544 transitions. [2021-10-08 17:18:53,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-08 17:18:53,410 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 [2021-10-08 17:18:53,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:18:53,412 INFO L225 Difference]: With dead ends: 962 [2021-10-08 17:18:53,412 INFO L226 Difference]: Without dead ends: 960 [2021-10-08 17:18:53,412 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 4875.1ms TimeCoverageRelationStatistics Valid=100, Invalid=204, Unknown=2, NotChecked=0, Total=306 [2021-10-08 17:18:53,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 960 states. [2021-10-08 17:18:53,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 960 to 634. [2021-10-08 17:18:53,425 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) [2021-10-08 17:18:53,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 2548 transitions. [2021-10-08 17:18:53,427 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 2548 transitions. Word has length 20 [2021-10-08 17:18:53,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:18:53,427 INFO L470 AbstractCegarLoop]: Abstraction has 634 states and 2548 transitions. [2021-10-08 17:18:53,427 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) [2021-10-08 17:18:53,427 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 2548 transitions. [2021-10-08 17:18:53,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:18:53,428 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:18:53,428 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] [2021-10-08 17:18:53,441 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (121)] Ended with exit code 0 [2021-10-08 17:18:53,630 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 [2021-10-08 17:18:53,630 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)] === [2021-10-08 17:18:53,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:18:53,631 INFO L82 PathProgramCache]: Analyzing trace with hash 667865859, now seen corresponding path program 54 times [2021-10-08 17:18:53,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:18:53,631 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [647319752] [2021-10-08 17:18:53,631 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 17:18:53,631 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:18:53,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:18:53,635 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) [2021-10-08 17:18:53,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (122)] Waiting until timeout for monitored process [2021-10-08 17:18:54,874 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-08 17:18:54,875 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:18:54,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:18:54,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:18:55,192 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:18:55,192 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:18:59,812 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:18:59,813 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:18:59,813 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [647319752] [2021-10-08 17:18:59,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [647319752] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:18:59,813 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:18:59,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-10-08 17:18:59,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838417808] [2021-10-08 17:18:59,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 17:18:59,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:18:59,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 17:18:59,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=124, Unknown=2, NotChecked=0, Total=182 [2021-10-08 17:18:59,815 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) [2021-10-08 17:19:20,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:19:20,496 INFO L93 Difference]: Finished difference Result 1722 states and 5716 transitions. [2021-10-08 17:19:20,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-08 17:19:20,546 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 [2021-10-08 17:19:20,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:19:20,550 INFO L225 Difference]: With dead ends: 1722 [2021-10-08 17:19:20,550 INFO L226 Difference]: Without dead ends: 1722 [2021-10-08 17:19:20,553 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 19024.1ms TimeCoverageRelationStatistics Valid=342, Invalid=846, Unknown=2, NotChecked=0, Total=1190 [2021-10-08 17:19:20,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1722 states. [2021-10-08 17:19:20,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1722 to 652. [2021-10-08 17:19:20,586 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) [2021-10-08 17:19:20,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 2650 transitions. [2021-10-08 17:19:20,588 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 2650 transitions. Word has length 20 [2021-10-08 17:19:20,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:19:20,588 INFO L470 AbstractCegarLoop]: Abstraction has 652 states and 2650 transitions. [2021-10-08 17:19:20,588 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) [2021-10-08 17:19:20,588 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 2650 transitions. [2021-10-08 17:19:20,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:19:20,589 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:19:20,589 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] [2021-10-08 17:19:20,602 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (122)] Forceful destruction successful, exit code 0 [2021-10-08 17:19:20,790 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 [2021-10-08 17:19:20,790 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)] === [2021-10-08 17:19:20,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:19:20,791 INFO L82 PathProgramCache]: Analyzing trace with hash 655239429, now seen corresponding path program 42 times [2021-10-08 17:19:20,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:19:20,792 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2146057812] [2021-10-08 17:19:20,792 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 17:19:20,792 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:19:20,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:19:20,793 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) [2021-10-08 17:19:20,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (123)] Waiting until timeout for monitored process [2021-10-08 17:19:21,974 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-08 17:19:21,975 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:19:21,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:19:21,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:19:22,165 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:19:22,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:19:22,809 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:19:22,810 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:19:22,810 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2146057812] [2021-10-08 17:19:22,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2146057812] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-08 17:19:22,810 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 17:19:22,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 11 [2021-10-08 17:19:22,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236669249] [2021-10-08 17:19:22,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-08 17:19:22,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:19:22,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-08 17:19:22,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-10-08 17:19:22,812 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) [2021-10-08 17:19:23,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:19:23,249 INFO L93 Difference]: Finished difference Result 906 states and 3403 transitions. [2021-10-08 17:19:23,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 17:19:23,250 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 [2021-10-08 17:19:23,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:19:23,252 INFO L225 Difference]: With dead ends: 906 [2021-10-08 17:19:23,252 INFO L226 Difference]: Without dead ends: 906 [2021-10-08 17:19:23,253 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 533.4ms TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2021-10-08 17:19:23,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2021-10-08 17:19:23,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 654. [2021-10-08 17:19:23,264 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) [2021-10-08 17:19:23,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 2659 transitions. [2021-10-08 17:19:23,266 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 2659 transitions. Word has length 20 [2021-10-08 17:19:23,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:19:23,267 INFO L470 AbstractCegarLoop]: Abstraction has 654 states and 2659 transitions. [2021-10-08 17:19:23,267 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) [2021-10-08 17:19:23,267 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 2659 transitions. [2021-10-08 17:19:23,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:19:23,268 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:19:23,268 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:19:23,281 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (123)] Ended with exit code 0 [2021-10-08 17:19:23,468 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 [2021-10-08 17:19:23,469 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)] === [2021-10-08 17:19:23,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:19:23,470 INFO L82 PathProgramCache]: Analyzing trace with hash 1624901349, now seen corresponding path program 43 times [2021-10-08 17:19:23,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:19:23,470 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [623257320] [2021-10-08 17:19:23,471 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 17:19:23,471 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:19:23,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:19:23,472 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) [2021-10-08 17:19:23,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (124)] Waiting until timeout for monitored process [2021-10-08 17:19:24,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:19:24,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-08 17:19:24,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:19:24,706 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:19:24,706 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:19:24,849 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:19:24,849 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:19:24,850 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [623257320] [2021-10-08 17:19:24,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [623257320] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:19:24,850 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:19:24,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 7 [2021-10-08 17:19:24,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408591177] [2021-10-08 17:19:24,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-08 17:19:24,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:19:24,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-08 17:19:24,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-08 17:19:24,851 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) [2021-10-08 17:19:25,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:19:25,173 INFO L93 Difference]: Finished difference Result 894 states and 3348 transitions. [2021-10-08 17:19:25,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 17:19:25,174 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 [2021-10-08 17:19:25,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:19:25,176 INFO L225 Difference]: With dead ends: 894 [2021-10-08 17:19:25,176 INFO L226 Difference]: Without dead ends: 880 [2021-10-08 17:19:25,177 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 149.3ms TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-10-08 17:19:25,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 880 states. [2021-10-08 17:19:25,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 880 to 650. [2021-10-08 17:19:25,188 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) [2021-10-08 17:19:25,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 2645 transitions. [2021-10-08 17:19:25,190 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 2645 transitions. Word has length 20 [2021-10-08 17:19:25,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:19:25,190 INFO L470 AbstractCegarLoop]: Abstraction has 650 states and 2645 transitions. [2021-10-08 17:19:25,190 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) [2021-10-08 17:19:25,190 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 2645 transitions. [2021-10-08 17:19:25,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:19:25,191 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:19:25,192 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] [2021-10-08 17:19:25,205 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (124)] Forceful destruction successful, exit code 0 [2021-10-08 17:19:25,392 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 [2021-10-08 17:19:25,392 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)] === [2021-10-08 17:19:25,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:19:25,393 INFO L82 PathProgramCache]: Analyzing trace with hash -1332262261, now seen corresponding path program 55 times [2021-10-08 17:19:25,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:19:25,394 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [517882010] [2021-10-08 17:19:25,394 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 17:19:25,394 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:19:25,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:19:25,395 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) [2021-10-08 17:19:25,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (125)] Waiting until timeout for monitored process [2021-10-08 17:19:26,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:19:26,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:19:26,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:19:26,601 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:19:26,602 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:19:31,561 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:19:31,561 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:19:31,561 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [517882010] [2021-10-08 17:19:31,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [517882010] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-08 17:19:31,562 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 17:19:31,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2021-10-08 17:19:31,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240618521] [2021-10-08 17:19:31,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-08 17:19:31,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:19:31,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-08 17:19:31,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=118, Unknown=2, NotChecked=0, Total=156 [2021-10-08 17:19:31,563 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) [2021-10-08 17:19:32,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:19:32,168 INFO L93 Difference]: Finished difference Result 928 states and 3522 transitions. [2021-10-08 17:19:32,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-08 17:19:32,169 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 [2021-10-08 17:19:32,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:19:32,171 INFO L225 Difference]: With dead ends: 928 [2021-10-08 17:19:32,172 INFO L226 Difference]: Without dead ends: 926 [2021-10-08 17:19:32,172 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 4870.9ms TimeCoverageRelationStatistics Valid=80, Invalid=190, Unknown=2, NotChecked=0, Total=272 [2021-10-08 17:19:32,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2021-10-08 17:19:32,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 650. [2021-10-08 17:19:32,183 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) [2021-10-08 17:19:32,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 2643 transitions. [2021-10-08 17:19:32,185 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 2643 transitions. Word has length 20 [2021-10-08 17:19:32,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:19:32,186 INFO L470 AbstractCegarLoop]: Abstraction has 650 states and 2643 transitions. [2021-10-08 17:19:32,186 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) [2021-10-08 17:19:32,186 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 2643 transitions. [2021-10-08 17:19:32,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:19:32,187 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:19:32,187 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] [2021-10-08 17:19:32,200 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (125)] Ended with exit code 0 [2021-10-08 17:19:32,388 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 [2021-10-08 17:19:32,388 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)] === [2021-10-08 17:19:32,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:19:32,389 INFO L82 PathProgramCache]: Analyzing trace with hash -24818941, now seen corresponding path program 56 times [2021-10-08 17:19:32,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:19:32,390 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [907343811] [2021-10-08 17:19:32,390 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:19:32,390 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:19:32,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:19:32,393 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) [2021-10-08 17:19:32,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (126)] Waiting until timeout for monitored process [2021-10-08 17:19:33,604 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:19:33,604 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:19:33,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:19:33,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:19:33,859 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:19:33,860 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:19:38,909 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:19:38,909 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:19:38,909 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [907343811] [2021-10-08 17:19:38,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [907343811] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:19:38,910 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:19:38,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-10-08 17:19:38,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638228456] [2021-10-08 17:19:38,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 17:19:38,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:19:38,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 17:19:38,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=136, Unknown=2, NotChecked=0, Total=182 [2021-10-08 17:19:38,911 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) [2021-10-08 17:20:11,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:20:11,054 INFO L93 Difference]: Finished difference Result 1404 states and 4887 transitions. [2021-10-08 17:20:11,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-08 17:20:11,057 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 [2021-10-08 17:20:11,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:20:11,061 INFO L225 Difference]: With dead ends: 1404 [2021-10-08 17:20:11,061 INFO L226 Difference]: Without dead ends: 1404 [2021-10-08 17:20:11,061 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 24646.0ms TimeCoverageRelationStatistics Valid=269, Invalid=721, Unknown=2, NotChecked=0, Total=992 [2021-10-08 17:20:11,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1404 states. [2021-10-08 17:20:11,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1404 to 650. [2021-10-08 17:20:11,078 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) [2021-10-08 17:20:11,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 2647 transitions. [2021-10-08 17:20:11,080 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 2647 transitions. Word has length 20 [2021-10-08 17:20:11,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:20:11,080 INFO L470 AbstractCegarLoop]: Abstraction has 650 states and 2647 transitions. [2021-10-08 17:20:11,080 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) [2021-10-08 17:20:11,080 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 2647 transitions. [2021-10-08 17:20:11,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:20:11,081 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:20:11,081 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] [2021-10-08 17:20:11,097 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (126)] Forceful destruction successful, exit code 0 [2021-10-08 17:20:11,283 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 [2021-10-08 17:20:11,283 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)] === [2021-10-08 17:20:11,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:20:11,284 INFO L82 PathProgramCache]: Analyzing trace with hash 1686812523, now seen corresponding path program 57 times [2021-10-08 17:20:11,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:20:11,285 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [788014648] [2021-10-08 17:20:11,285 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:20:11,285 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:20:11,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:20:11,288 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) [2021-10-08 17:20:11,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (127)] Waiting until timeout for monitored process [2021-10-08 17:20:12,519 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-08 17:20:12,519 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:20:12,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:20:12,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:20:12,802 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:20:12,802 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:20:18,505 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:20:18,505 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:20:18,505 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [788014648] [2021-10-08 17:20:18,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [788014648] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:20:18,506 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:20:18,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-10-08 17:20:18,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512461850] [2021-10-08 17:20:18,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 17:20:18,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:20:18,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 17:20:18,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=129, Unknown=2, NotChecked=0, Total=182 [2021-10-08 17:20:18,507 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) [2021-10-08 17:20:31,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:20:31,076 INFO L93 Difference]: Finished difference Result 1466 states and 5120 transitions. [2021-10-08 17:20:31,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-08 17:20:31,079 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 [2021-10-08 17:20:31,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:20:31,083 INFO L225 Difference]: With dead ends: 1466 [2021-10-08 17:20:31,084 INFO L226 Difference]: Without dead ends: 1466 [2021-10-08 17:20:31,084 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 14368.5ms TimeCoverageRelationStatistics Valid=251, Invalid=503, Unknown=2, NotChecked=0, Total=756 [2021-10-08 17:20:31,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1466 states. [2021-10-08 17:20:31,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1466 to 654. [2021-10-08 17:20:31,111 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) [2021-10-08 17:20:31,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 2673 transitions. [2021-10-08 17:20:31,113 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 2673 transitions. Word has length 20 [2021-10-08 17:20:31,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:20:31,113 INFO L470 AbstractCegarLoop]: Abstraction has 654 states and 2673 transitions. [2021-10-08 17:20:31,114 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) [2021-10-08 17:20:31,114 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 2673 transitions. [2021-10-08 17:20:31,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:20:31,115 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:20:31,115 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] [2021-10-08 17:20:31,130 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (127)] Forceful destruction successful, exit code 0 [2021-10-08 17:20:31,315 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 [2021-10-08 17:20:31,316 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)] === [2021-10-08 17:20:31,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:20:31,317 INFO L82 PathProgramCache]: Analyzing trace with hash -1731645719, now seen corresponding path program 44 times [2021-10-08 17:20:31,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:20:31,317 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1449930407] [2021-10-08 17:20:31,318 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:20:31,318 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:20:31,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:20:31,320 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) [2021-10-08 17:20:31,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (128)] Waiting until timeout for monitored process [2021-10-08 17:20:32,532 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:20:32,532 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:20:32,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:20:32,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:20:32,750 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:20:32,750 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:20:33,229 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:20:33,229 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:20:33,230 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1449930407] [2021-10-08 17:20:33,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1449930407] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-08 17:20:33,230 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 17:20:33,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 11 [2021-10-08 17:20:33,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359433540] [2021-10-08 17:20:33,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-08 17:20:33,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:20:33,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-08 17:20:33,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-10-08 17:20:33,231 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) [2021-10-08 17:20:33,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:20:33,584 INFO L93 Difference]: Finished difference Result 876 states and 3345 transitions. [2021-10-08 17:20:33,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 17:20:33,585 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 [2021-10-08 17:20:33,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:20:33,587 INFO L225 Difference]: With dead ends: 876 [2021-10-08 17:20:33,587 INFO L226 Difference]: Without dead ends: 876 [2021-10-08 17:20:33,588 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 477.7ms TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2021-10-08 17:20:33,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2021-10-08 17:20:33,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 660. [2021-10-08 17:20:33,601 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) [2021-10-08 17:20:33,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 660 states to 660 states and 2689 transitions. [2021-10-08 17:20:33,603 INFO L78 Accepts]: Start accepts. Automaton has 660 states and 2689 transitions. Word has length 20 [2021-10-08 17:20:33,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:20:33,603 INFO L470 AbstractCegarLoop]: Abstraction has 660 states and 2689 transitions. [2021-10-08 17:20:33,603 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) [2021-10-08 17:20:33,603 INFO L276 IsEmpty]: Start isEmpty. Operand 660 states and 2689 transitions. [2021-10-08 17:20:33,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:20:33,605 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:20:33,605 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] [2021-10-08 17:20:33,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (128)] Forceful destruction successful, exit code 0 [2021-10-08 17:20:33,806 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 [2021-10-08 17:20:33,807 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)] === [2021-10-08 17:20:33,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:20:33,808 INFO L82 PathProgramCache]: Analyzing trace with hash 575819887, now seen corresponding path program 58 times [2021-10-08 17:20:33,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:20:33,809 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2038465176] [2021-10-08 17:20:33,809 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 17:20:33,810 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:20:33,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:20:33,811 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) [2021-10-08 17:20:33,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (129)] Waiting until timeout for monitored process [2021-10-08 17:20:34,980 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 17:20:34,980 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:20:34,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:20:34,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:20:35,190 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:20:35,190 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:20:37,942 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:20:37,943 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:20:37,943 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2038465176] [2021-10-08 17:20:37,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2038465176] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-08 17:20:37,944 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 17:20:37,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2021-10-08 17:20:37,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848572468] [2021-10-08 17:20:37,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-08 17:20:37,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:20:37,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-08 17:20:37,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=121, Unknown=1, NotChecked=0, Total=156 [2021-10-08 17:20:37,945 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) [2021-10-08 17:20:38,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:20:38,597 INFO L93 Difference]: Finished difference Result 958 states and 3605 transitions. [2021-10-08 17:20:38,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-08 17:20:38,598 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 [2021-10-08 17:20:38,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:20:38,601 INFO L225 Difference]: With dead ends: 958 [2021-10-08 17:20:38,601 INFO L226 Difference]: Without dead ends: 956 [2021-10-08 17:20:38,601 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 2774.4ms TimeCoverageRelationStatistics Valid=89, Invalid=216, Unknown=1, NotChecked=0, Total=306 [2021-10-08 17:20:38,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 956 states. [2021-10-08 17:20:38,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 956 to 660. [2021-10-08 17:20:38,617 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) [2021-10-08 17:20:38,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 660 states to 660 states and 2687 transitions. [2021-10-08 17:20:38,620 INFO L78 Accepts]: Start accepts. Automaton has 660 states and 2687 transitions. Word has length 20 [2021-10-08 17:20:38,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:20:38,620 INFO L470 AbstractCegarLoop]: Abstraction has 660 states and 2687 transitions. [2021-10-08 17:20:38,620 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) [2021-10-08 17:20:38,620 INFO L276 IsEmpty]: Start isEmpty. Operand 660 states and 2687 transitions. [2021-10-08 17:20:38,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:20:38,622 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:20:38,622 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] [2021-10-08 17:20:38,637 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (129)] Forceful destruction successful, exit code 0 [2021-10-08 17:20:38,823 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 [2021-10-08 17:20:38,824 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)] === [2021-10-08 17:20:38,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:20:38,824 INFO L82 PathProgramCache]: Analyzing trace with hash 1883263207, now seen corresponding path program 59 times [2021-10-08 17:20:38,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:20:38,825 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1282482134] [2021-10-08 17:20:38,825 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 17:20:38,825 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:20:38,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:20:38,827 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) [2021-10-08 17:20:38,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (130)] Waiting until timeout for monitored process [2021-10-08 17:20:40,003 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:20:40,004 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:20:40,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:20:40,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:20:40,271 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:20:40,271 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:20:43,003 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:20:43,004 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:20:43,004 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1282482134] [2021-10-08 17:20:43,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1282482134] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:20:43,004 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:20:43,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-10-08 17:20:43,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513375062] [2021-10-08 17:20:43,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 17:20:43,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:20:43,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 17:20:43,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=137, Unknown=1, NotChecked=0, Total=182 [2021-10-08 17:20:43,006 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) [2021-10-08 17:20:52,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:20:52,624 INFO L93 Difference]: Finished difference Result 1334 states and 4629 transitions. [2021-10-08 17:20:52,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-08 17:20:52,626 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 [2021-10-08 17:20:52,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:20:52,630 INFO L225 Difference]: With dead ends: 1334 [2021-10-08 17:20:52,631 INFO L226 Difference]: Without dead ends: 1334 [2021-10-08 17:20:52,631 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 9973.7ms TimeCoverageRelationStatistics Valid=214, Invalid=597, Unknown=1, NotChecked=0, Total=812 [2021-10-08 17:20:52,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1334 states. [2021-10-08 17:20:52,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1334 to 668. [2021-10-08 17:20:52,651 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) [2021-10-08 17:20:52,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 2717 transitions. [2021-10-08 17:20:52,653 INFO L78 Accepts]: Start accepts. Automaton has 668 states and 2717 transitions. Word has length 20 [2021-10-08 17:20:52,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:20:52,653 INFO L470 AbstractCegarLoop]: Abstraction has 668 states and 2717 transitions. [2021-10-08 17:20:52,654 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) [2021-10-08 17:20:52,654 INFO L276 IsEmpty]: Start isEmpty. Operand 668 states and 2717 transitions. [2021-10-08 17:20:52,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:20:52,655 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:20:52,655 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] [2021-10-08 17:20:52,669 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (130)] Ended with exit code 0 [2021-10-08 17:20:52,856 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 [2021-10-08 17:20:52,856 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)] === [2021-10-08 17:20:52,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:20:52,857 INFO L82 PathProgramCache]: Analyzing trace with hash 604831339, now seen corresponding path program 60 times [2021-10-08 17:20:52,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:20:52,858 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [66070700] [2021-10-08 17:20:52,858 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 17:20:52,858 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:20:52,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:20:52,866 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) [2021-10-08 17:20:52,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (131)] Waiting until timeout for monitored process [2021-10-08 17:20:54,145 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-08 17:20:54,145 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:20:54,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:20:54,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:20:54,410 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:20:54,410 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:20:57,040 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:20:57,040 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:20:57,040 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [66070700] [2021-10-08 17:20:57,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [66070700] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:20:57,041 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:20:57,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-10-08 17:20:57,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125577947] [2021-10-08 17:20:57,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 17:20:57,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:20:57,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 17:20:57,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=136, Unknown=1, NotChecked=0, Total=182 [2021-10-08 17:20:57,042 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) [2021-10-08 17:21:17,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:21:17,919 INFO L93 Difference]: Finished difference Result 1764 states and 5835 transitions. [2021-10-08 17:21:17,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-08 17:21:17,920 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 [2021-10-08 17:21:17,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:21:17,924 INFO L225 Difference]: With dead ends: 1764 [2021-10-08 17:21:17,924 INFO L226 Difference]: Without dead ends: 1764 [2021-10-08 17:21:17,924 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 19228.5ms TimeCoverageRelationStatistics Valid=392, Invalid=1013, Unknown=1, NotChecked=0, Total=1406 [2021-10-08 17:21:17,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1764 states. [2021-10-08 17:21:17,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1764 to 660. [2021-10-08 17:21:17,942 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) [2021-10-08 17:21:17,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 660 states to 660 states and 2693 transitions. [2021-10-08 17:21:17,944 INFO L78 Accepts]: Start accepts. Automaton has 660 states and 2693 transitions. Word has length 20 [2021-10-08 17:21:17,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:21:17,944 INFO L470 AbstractCegarLoop]: Abstraction has 660 states and 2693 transitions. [2021-10-08 17:21:17,945 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) [2021-10-08 17:21:17,945 INFO L276 IsEmpty]: Start isEmpty. Operand 660 states and 2693 transitions. [2021-10-08 17:21:17,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:21:17,946 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:21:17,946 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] [2021-10-08 17:21:17,959 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (131)] Forceful destruction successful, exit code 0 [2021-10-08 17:21:18,147 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 [2021-10-08 17:21:18,148 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)] === [2021-10-08 17:21:18,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:21:18,149 INFO L82 PathProgramCache]: Analyzing trace with hash 1567220871, now seen corresponding path program 61 times [2021-10-08 17:21:18,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:21:18,149 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1667737091] [2021-10-08 17:21:18,149 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 17:21:18,150 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:21:18,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:21:18,151 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) [2021-10-08 17:21:18,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (132)] Waiting until timeout for monitored process [2021-10-08 17:21:19,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:21:19,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:21:19,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:21:19,511 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:21:19,512 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:21:20,975 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:21:20,975 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:21:20,975 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1667737091] [2021-10-08 17:21:20,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1667737091] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:21:20,976 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:21:20,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-10-08 17:21:20,976 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99561679] [2021-10-08 17:21:20,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 17:21:20,976 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:21:20,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 17:21:20,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2021-10-08 17:21:20,977 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) [2021-10-08 17:21:29,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:21:29,353 INFO L93 Difference]: Finished difference Result 1632 states and 5703 transitions. [2021-10-08 17:21:29,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-08 17:21:29,355 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 [2021-10-08 17:21:29,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:21:29,360 INFO L225 Difference]: With dead ends: 1632 [2021-10-08 17:21:29,360 INFO L226 Difference]: Without dead ends: 1632 [2021-10-08 17:21:29,360 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 7226.0ms TimeCoverageRelationStatistics Valid=304, Invalid=566, Unknown=0, NotChecked=0, Total=870 [2021-10-08 17:21:29,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1632 states. [2021-10-08 17:21:29,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1632 to 686. [2021-10-08 17:21:29,387 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) [2021-10-08 17:21:29,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 2808 transitions. [2021-10-08 17:21:29,389 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 2808 transitions. Word has length 20 [2021-10-08 17:21:29,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:21:29,389 INFO L470 AbstractCegarLoop]: Abstraction has 686 states and 2808 transitions. [2021-10-08 17:21:29,389 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) [2021-10-08 17:21:29,390 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 2808 transitions. [2021-10-08 17:21:29,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:21:29,391 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:21:29,391 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] [2021-10-08 17:21:29,404 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (132)] Ended with exit code 0 [2021-10-08 17:21:29,591 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 [2021-10-08 17:21:29,592 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)] === [2021-10-08 17:21:29,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:21:29,593 INFO L82 PathProgramCache]: Analyzing trace with hash 710130279, now seen corresponding path program 62 times [2021-10-08 17:21:29,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:21:29,593 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [168832728] [2021-10-08 17:21:29,594 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:21:29,594 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:21:29,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:21:29,595 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) [2021-10-08 17:21:29,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (133)] Waiting until timeout for monitored process [2021-10-08 17:21:30,961 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:21:30,962 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:21:30,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:21:30,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:21:31,273 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:21:31,274 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:21:32,648 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:21:32,649 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:21:32,649 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [168832728] [2021-10-08 17:21:32,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [168832728] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:21:32,649 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:21:32,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-10-08 17:21:32,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561729065] [2021-10-08 17:21:32,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 17:21:32,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:21:32,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 17:21:32,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2021-10-08 17:21:32,650 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) [2021-10-08 17:21:40,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:21:40,881 INFO L93 Difference]: Finished difference Result 1654 states and 5737 transitions. [2021-10-08 17:21:40,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-08 17:21:40,883 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 [2021-10-08 17:21:40,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:21:40,888 INFO L225 Difference]: With dead ends: 1654 [2021-10-08 17:21:40,888 INFO L226 Difference]: Without dead ends: 1654 [2021-10-08 17:21:40,888 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 7203.9ms TimeCoverageRelationStatistics Valid=299, Invalid=571, Unknown=0, NotChecked=0, Total=870 [2021-10-08 17:21:40,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1654 states. [2021-10-08 17:21:40,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1654 to 678. [2021-10-08 17:21:40,915 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) [2021-10-08 17:21:40,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 2763 transitions. [2021-10-08 17:21:40,918 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 2763 transitions. Word has length 20 [2021-10-08 17:21:40,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:21:40,918 INFO L470 AbstractCegarLoop]: Abstraction has 678 states and 2763 transitions. [2021-10-08 17:21:40,918 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) [2021-10-08 17:21:40,918 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 2763 transitions. [2021-10-08 17:21:40,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:21:40,920 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:21:40,920 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] [2021-10-08 17:21:40,935 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (133)] Ended with exit code 0 [2021-10-08 17:21:41,120 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 [2021-10-08 17:21:41,121 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)] === [2021-10-08 17:21:41,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:21:41,121 INFO L82 PathProgramCache]: Analyzing trace with hash 2125799171, now seen corresponding path program 63 times [2021-10-08 17:21:41,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:21:41,122 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1271844114] [2021-10-08 17:21:41,122 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:21:41,123 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:21:41,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:21:41,124 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) [2021-10-08 17:21:41,128 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (134)] Waiting until timeout for monitored process [2021-10-08 17:21:42,503 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-08 17:21:42,504 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:21:42,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:21:42,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:21:42,761 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:21:42,762 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:21:43,489 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:21:43,490 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:21:43,490 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1271844114] [2021-10-08 17:21:43,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1271844114] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:21:43,490 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:21:43,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-10-08 17:21:43,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520800815] [2021-10-08 17:21:43,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 17:21:43,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:21:43,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 17:21:43,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-10-08 17:21:43,491 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) [2021-10-08 17:21:54,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:21:54,797 INFO L93 Difference]: Finished difference Result 1902 states and 6423 transitions. [2021-10-08 17:21:54,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-08 17:21:54,799 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 [2021-10-08 17:21:54,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:21:54,804 INFO L225 Difference]: With dead ends: 1902 [2021-10-08 17:21:54,805 INFO L226 Difference]: Without dead ends: 1902 [2021-10-08 17:21:54,805 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 8354.6ms TimeCoverageRelationStatistics Valid=448, Invalid=1034, Unknown=0, NotChecked=0, Total=1482 [2021-10-08 17:21:54,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1902 states. [2021-10-08 17:21:54,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1902 to 640. [2021-10-08 17:21:54,833 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) [2021-10-08 17:21:54,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 2596 transitions. [2021-10-08 17:21:54,836 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 2596 transitions. Word has length 20 [2021-10-08 17:21:54,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:21:54,836 INFO L470 AbstractCegarLoop]: Abstraction has 640 states and 2596 transitions. [2021-10-08 17:21:54,836 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) [2021-10-08 17:21:54,837 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 2596 transitions. [2021-10-08 17:21:54,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:21:54,838 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:21:54,838 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] [2021-10-08 17:21:54,858 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (134)] Ended with exit code 0 [2021-10-08 17:21:55,054 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 [2021-10-08 17:21:55,054 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)] === [2021-10-08 17:21:55,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:21:55,055 INFO L82 PathProgramCache]: Analyzing trace with hash 2035451805, now seen corresponding path program 19 times [2021-10-08 17:21:55,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:21:55,055 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1730079146] [2021-10-08 17:21:55,055 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 17:21:55,056 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:21:55,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:21:55,058 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) [2021-10-08 17:21:55,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (135)] Waiting until timeout for monitored process [2021-10-08 17:21:57,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:21:57,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:21:57,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:21:57,291 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:21:57,291 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:21:58,120 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:21:58,120 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:21:58,121 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1730079146] [2021-10-08 17:21:58,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1730079146] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:21:58,121 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:21:58,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-10-08 17:21:58,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168335284] [2021-10-08 17:21:58,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 17:21:58,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:21:58,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 17:21:58,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-10-08 17:21:58,122 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) [2021-10-08 17:22:00,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:22:00,694 INFO L93 Difference]: Finished difference Result 1330 states and 4755 transitions. [2021-10-08 17:22:00,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-08 17:22:00,696 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 [2021-10-08 17:22:00,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:22:00,699 INFO L225 Difference]: With dead ends: 1330 [2021-10-08 17:22:00,699 INFO L226 Difference]: Without dead ends: 1326 [2021-10-08 17:22:00,699 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1770.6ms TimeCoverageRelationStatistics Valid=98, Invalid=208, Unknown=0, NotChecked=0, Total=306 [2021-10-08 17:22:00,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1326 states. [2021-10-08 17:22:00,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1326 to 662. [2021-10-08 17:22:00,714 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) [2021-10-08 17:22:00,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 2694 transitions. [2021-10-08 17:22:00,716 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 2694 transitions. Word has length 20 [2021-10-08 17:22:00,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:22:00,717 INFO L470 AbstractCegarLoop]: Abstraction has 662 states and 2694 transitions. [2021-10-08 17:22:00,717 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) [2021-10-08 17:22:00,717 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 2694 transitions. [2021-10-08 17:22:00,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:22:00,718 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:22:00,718 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] [2021-10-08 17:22:00,731 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (135)] Ended with exit code 0 [2021-10-08 17:22:00,918 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 [2021-10-08 17:22:00,919 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)] === [2021-10-08 17:22:00,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:22:00,919 INFO L82 PathProgramCache]: Analyzing trace with hash 91465797, now seen corresponding path program 20 times [2021-10-08 17:22:00,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:22:00,920 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1703239403] [2021-10-08 17:22:00,920 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:22:00,921 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:22:00,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:22:00,922 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) [2021-10-08 17:22:00,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (136)] Waiting until timeout for monitored process [2021-10-08 17:22:02,235 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:22:02,236 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:22:02,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:22:02,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:22:02,480 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:22:02,481 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:22:02,916 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:22:02,917 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:22:02,917 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1703239403] [2021-10-08 17:22:02,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1703239403] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:22:02,917 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:22:02,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-10-08 17:22:02,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276771642] [2021-10-08 17:22:02,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 17:22:02,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:22:02,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 17:22:02,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-10-08 17:22:02,918 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) [2021-10-08 17:22:04,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:22:04,594 INFO L93 Difference]: Finished difference Result 1170 states and 4349 transitions. [2021-10-08 17:22:04,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-08 17:22:04,595 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 [2021-10-08 17:22:04,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:22:04,598 INFO L225 Difference]: With dead ends: 1170 [2021-10-08 17:22:04,598 INFO L226 Difference]: Without dead ends: 1166 [2021-10-08 17:22:04,598 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 925.7ms TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2021-10-08 17:22:04,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1166 states. [2021-10-08 17:22:04,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1166 to 668. [2021-10-08 17:22:04,613 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) [2021-10-08 17:22:04,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 2725 transitions. [2021-10-08 17:22:04,615 INFO L78 Accepts]: Start accepts. Automaton has 668 states and 2725 transitions. Word has length 20 [2021-10-08 17:22:04,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:22:04,615 INFO L470 AbstractCegarLoop]: Abstraction has 668 states and 2725 transitions. [2021-10-08 17:22:04,615 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) [2021-10-08 17:22:04,615 INFO L276 IsEmpty]: Start isEmpty. Operand 668 states and 2725 transitions. [2021-10-08 17:22:04,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:22:04,616 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:22:04,617 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:22:04,632 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (136)] Forceful destruction successful, exit code 0 [2021-10-08 17:22:04,817 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 [2021-10-08 17:22:04,817 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)] === [2021-10-08 17:22:04,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:22:04,818 INFO L82 PathProgramCache]: Analyzing trace with hash 1131053721, now seen corresponding path program 45 times [2021-10-08 17:22:04,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:22:04,819 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [100368546] [2021-10-08 17:22:04,819 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:22:04,819 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:22:04,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:22:04,820 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) [2021-10-08 17:22:04,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (137)] Waiting until timeout for monitored process [2021-10-08 17:22:06,090 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-08 17:22:06,090 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:22:06,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:22:06,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:22:06,428 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:22:06,428 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:22:06,917 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:22:06,917 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:22:06,918 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [100368546] [2021-10-08 17:22:06,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [100368546] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:22:06,918 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:22:06,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-10-08 17:22:06,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126522360] [2021-10-08 17:22:06,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 17:22:06,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:22:06,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 17:22:06,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-10-08 17:22:06,919 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) [2021-10-08 17:22:09,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:22:09,515 INFO L93 Difference]: Finished difference Result 1580 states and 5575 transitions. [2021-10-08 17:22:09,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-08 17:22:09,517 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 [2021-10-08 17:22:09,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:22:09,520 INFO L225 Difference]: With dead ends: 1580 [2021-10-08 17:22:09,520 INFO L226 Difference]: Without dead ends: 1580 [2021-10-08 17:22:09,521 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 1597.0ms TimeCoverageRelationStatistics Valid=217, Invalid=383, Unknown=0, NotChecked=0, Total=600 [2021-10-08 17:22:09,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1580 states. [2021-10-08 17:22:09,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1580 to 666. [2021-10-08 17:22:09,540 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) [2021-10-08 17:22:09,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 2715 transitions. [2021-10-08 17:22:09,542 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 2715 transitions. Word has length 20 [2021-10-08 17:22:09,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:22:09,542 INFO L470 AbstractCegarLoop]: Abstraction has 666 states and 2715 transitions. [2021-10-08 17:22:09,542 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) [2021-10-08 17:22:09,542 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 2715 transitions. [2021-10-08 17:22:09,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:22:09,543 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:22:09,544 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] [2021-10-08 17:22:09,556 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (137)] Forceful destruction successful, exit code 0 [2021-10-08 17:22:09,744 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 [2021-10-08 17:22:09,744 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)] === [2021-10-08 17:22:09,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:22:09,745 INFO L82 PathProgramCache]: Analyzing trace with hash -923250107, now seen corresponding path program 21 times [2021-10-08 17:22:09,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:22:09,746 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [519596748] [2021-10-08 17:22:09,746 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:22:09,746 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:22:09,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:22:09,748 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) [2021-10-08 17:22:09,761 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (138)] Waiting until timeout for monitored process [2021-10-08 17:22:11,090 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-08 17:22:11,090 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:22:11,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:22:11,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:22:11,315 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:22:11,315 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:22:12,191 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:22:12,192 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:22:12,192 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [519596748] [2021-10-08 17:22:12,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [519596748] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-08 17:22:12,192 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 17:22:12,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-10-08 17:22:12,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765794925] [2021-10-08 17:22:12,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-08 17:22:12,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:22:12,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-08 17:22:12,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-10-08 17:22:12,193 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) [2021-10-08 17:22:12,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:22:12,503 INFO L93 Difference]: Finished difference Result 884 states and 3412 transitions. [2021-10-08 17:22:12,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 17:22:12,504 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 [2021-10-08 17:22:12,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:22:12,506 INFO L225 Difference]: With dead ends: 884 [2021-10-08 17:22:12,506 INFO L226 Difference]: Without dead ends: 884 [2021-10-08 17:22:12,506 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 723.5ms TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2021-10-08 17:22:12,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 884 states. [2021-10-08 17:22:12,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 884 to 662. [2021-10-08 17:22:12,518 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) [2021-10-08 17:22:12,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 2704 transitions. [2021-10-08 17:22:12,520 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 2704 transitions. Word has length 20 [2021-10-08 17:22:12,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:22:12,520 INFO L470 AbstractCegarLoop]: Abstraction has 662 states and 2704 transitions. [2021-10-08 17:22:12,520 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) [2021-10-08 17:22:12,520 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 2704 transitions. [2021-10-08 17:22:12,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:22:12,522 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:22:12,522 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] [2021-10-08 17:22:12,535 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (138)] Forceful destruction successful, exit code 0 [2021-10-08 17:22:12,722 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 [2021-10-08 17:22:12,722 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)] === [2021-10-08 17:22:12,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:22:12,723 INFO L82 PathProgramCache]: Analyzing trace with hash -1461034813, now seen corresponding path program 64 times [2021-10-08 17:22:12,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:22:12,724 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2113524443] [2021-10-08 17:22:12,724 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 17:22:12,724 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:22:12,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:22:12,725 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) [2021-10-08 17:22:12,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (139)] Waiting until timeout for monitored process [2021-10-08 17:22:13,897 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 17:22:13,897 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:22:13,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:22:13,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:22:14,109 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:22:14,109 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:22:16,899 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:22:16,899 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:22:16,900 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2113524443] [2021-10-08 17:22:16,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2113524443] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-08 17:22:16,900 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 17:22:16,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2021-10-08 17:22:16,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492929781] [2021-10-08 17:22:16,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-08 17:22:16,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:22:16,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-08 17:22:16,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=115, Unknown=1, NotChecked=0, Total=156 [2021-10-08 17:22:16,901 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) [2021-10-08 17:22:17,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:22:17,475 INFO L93 Difference]: Finished difference Result 928 states and 3525 transitions. [2021-10-08 17:22:17,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-08 17:22:17,476 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 [2021-10-08 17:22:17,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:22:17,478 INFO L225 Difference]: With dead ends: 928 [2021-10-08 17:22:17,478 INFO L226 Difference]: Without dead ends: 926 [2021-10-08 17:22:17,478 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 2748.5ms TimeCoverageRelationStatistics Valid=84, Invalid=187, Unknown=1, NotChecked=0, Total=272 [2021-10-08 17:22:17,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2021-10-08 17:22:17,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 664. [2021-10-08 17:22:17,492 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) [2021-10-08 17:22:17,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 2709 transitions. [2021-10-08 17:22:17,494 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 2709 transitions. Word has length 20 [2021-10-08 17:22:17,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:22:17,494 INFO L470 AbstractCegarLoop]: Abstraction has 664 states and 2709 transitions. [2021-10-08 17:22:17,494 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) [2021-10-08 17:22:17,494 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 2709 transitions. [2021-10-08 17:22:17,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:22:17,496 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:22:17,496 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] [2021-10-08 17:22:17,510 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (139)] Forceful destruction successful, exit code 0 [2021-10-08 17:22:17,696 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 [2021-10-08 17:22:17,696 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)] === [2021-10-08 17:22:17,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:22:17,697 INFO L82 PathProgramCache]: Analyzing trace with hash 533841755, now seen corresponding path program 65 times [2021-10-08 17:22:17,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:22:17,697 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [638198462] [2021-10-08 17:22:17,698 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 17:22:17,698 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:22:17,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:22:17,699 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) [2021-10-08 17:22:17,704 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (140)] Waiting until timeout for monitored process [2021-10-08 17:22:18,923 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:22:18,923 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:22:18,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:22:18,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:22:19,237 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:22:19,237 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:22:21,981 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:22:21,982 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:22:21,982 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [638198462] [2021-10-08 17:22:21,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [638198462] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:22:21,982 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:22:21,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-10-08 17:22:21,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679875911] [2021-10-08 17:22:21,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 17:22:21,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:22:21,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 17:22:21,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=129, Unknown=1, NotChecked=0, Total=182 [2021-10-08 17:22:21,983 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) Received shutdown request... [2021-10-08 17:22:23,371 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (140)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-08 17:22:23,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-08 17:22:23,373 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-08 17:22:23,376 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK [2021-10-08 17:22:23,394 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (140)] Forceful destruction successful, exit code 0 [2021-10-08 17:22:23,579 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 [2021-10-08 17:22:23,579 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (664states) and FLOYD_HOARE automaton (currently 13 states, 14 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 19 known predicates. [2021-10-08 17:22:23,582 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-08 17:22:23,582 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-08 17:22:23,582 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-08 17:22:23,582 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-08 17:22:23,582 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-08 17:22:23,583 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-08 17:22:23,583 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-08 17:22:23,583 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-08 17:22:23,583 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-08 17:22:23,583 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-08 17:22:23,583 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr10REQUIRES_VIOLATION [2021-10-08 17:22:23,583 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr11REQUIRES_VIOLATION [2021-10-08 17:22:23,583 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK [2021-10-08 17:22:23,584 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-08 17:22:23,584 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-08 17:22:23,584 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-08 17:22:23,591 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-08 17:22:23,591 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-08 17:22:23,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.10 05:22:23 BasicIcfg [2021-10-08 17:22:23,595 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-08 17:22:23,598 INFO L168 Benchmark]: Toolchain (without parser) took 838804.16 ms. Allocated memory was 163.6 MB in the beginning and 243.3 MB in the end (delta: 79.7 MB). Free memory was 138.8 MB in the beginning and 148.9 MB in the end (delta: -10.2 MB). Peak memory consumption was 70.0 MB. Max. memory is 8.0 GB. [2021-10-08 17:22:23,598 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 163.6 MB. Free memory was 134.0 MB in the beginning and 133.7 MB in the end (delta: 215.0 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-10-08 17:22:23,599 INFO L168 Benchmark]: CACSL2BoogieTranslator took 297.12 ms. Allocated memory is still 163.6 MB. Free memory was 138.2 MB in the beginning and 127.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-10-08 17:22:23,599 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.71 ms. Allocated memory is still 163.6 MB. Free memory was 127.5 MB in the beginning and 125.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-08 17:22:23,599 INFO L168 Benchmark]: Boogie Preprocessor took 34.79 ms. Allocated memory is still 163.6 MB. Free memory was 125.8 MB in the beginning and 124.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-08 17:22:23,600 INFO L168 Benchmark]: RCFGBuilder took 705.71 ms. Allocated memory is still 163.6 MB. Free memory was 124.4 MB in the beginning and 110.9 MB in the end (delta: 13.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-10-08 17:22:23,600 INFO L168 Benchmark]: TraceAbstraction took 837701.87 ms. Allocated memory was 163.6 MB in the beginning and 243.3 MB in the end (delta: 79.7 MB). Free memory was 110.3 MB in the beginning and 148.9 MB in the end (delta: -38.6 MB). Peak memory consumption was 41.7 MB. Max. memory is 8.0 GB. [2021-10-08 17:22:23,601 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 163.6 MB. Free memory was 134.0 MB in the beginning and 133.7 MB in the end (delta: 215.0 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 297.12 ms. Allocated memory is still 163.6 MB. Free memory was 138.2 MB in the beginning and 127.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 48.71 ms. Allocated memory is still 163.6 MB. Free memory was 127.5 MB in the beginning and 125.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 34.79 ms. Allocated memory is still 163.6 MB. Free memory was 125.8 MB in the beginning and 124.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 705.71 ms. Allocated memory is still 163.6 MB. Free memory was 124.4 MB in the beginning and 110.9 MB in the end (delta: 13.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 837701.87 ms. Allocated memory was 163.6 MB in the beginning and 243.3 MB in the end (delta: 79.7 MB). Free memory was 110.3 MB in the beginning and 148.9 MB in the end (delta: -38.6 MB). Peak memory consumption was 41.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 9875.3ms, 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 (664states) and FLOYD_HOARE automaton (currently 13 states, 14 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 19 known predicates. - TimeoutResultAtElement [Line: 72]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (664states) and FLOYD_HOARE automaton (currently 13 states, 14 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 19 known predicates. - TimeoutResultAtElement [Line: 72]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (664states) and FLOYD_HOARE automaton (currently 13 states, 14 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 19 known predicates. - TimeoutResultAtElement [Line: 73]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (664states) and FLOYD_HOARE automaton (currently 13 states, 14 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 19 known predicates. - TimeoutResultAtElement [Line: 73]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (664states) and FLOYD_HOARE automaton (currently 13 states, 14 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 19 known predicates. - TimeoutResultAtElement [Line: 74]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (664states) and FLOYD_HOARE automaton (currently 13 states, 14 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 19 known predicates. - TimeoutResultAtElement [Line: 74]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (664states) and FLOYD_HOARE automaton (currently 13 states, 14 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 19 known predicates. - TimeoutResultAtElement [Line: 75]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (664states) and FLOYD_HOARE automaton (currently 13 states, 14 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 19 known predicates. - TimeoutResultAtElement [Line: 75]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (664states) and FLOYD_HOARE automaton (currently 13 states, 14 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 19 known predicates. - TimeoutResultAtElement [Line: 76]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (664states) and FLOYD_HOARE automaton (currently 13 states, 14 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 19 known predicates. - TimeoutResultAtElement [Line: 76]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (664states) and FLOYD_HOARE automaton (currently 13 states, 14 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 19 known predicates. - TimeoutResultAtElement [Line: 77]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (664states) and FLOYD_HOARE automaton (currently 13 states, 14 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 19 known predicates. - TimeoutResultAtElement [Line: 77]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (664states) and FLOYD_HOARE automaton (currently 13 states, 14 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 19 known predicates. - TimeoutResultAtElement [Line: 64]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while BasicCegarLoop was constructing difference of abstraction (664states) and FLOYD_HOARE automaton (currently 13 states, 14 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 19 known predicates. - 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 (664states) and FLOYD_HOARE automaton (currently 13 states, 14 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 19 known predicates. - 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 (664states) and FLOYD_HOARE automaton (currently 13 states, 14 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 19 known predicates. - 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 (664states) and FLOYD_HOARE automaton (currently 13 states, 14 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 19 known predicates. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 141 locations, 17 error locations. Started 1 CEGAR loops. OverallTime: 837405.8ms, OverallIterations: 139, TraceHistogramMax: 1, EmptinessCheckTime: 244.7ms, AutomataDifference: 534315.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9973.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 8932 SDtfs, 15037 SDslu, 31072 SDs, 0 SdLazy, 28215 SolverSat, 1157 SolverUnsat, 49 SolverUnknown, 0 SolverNotchecked, 323133.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7000 GetRequests, 4471 SyntacticMatches, 74 SemanticMatches, 2454 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10052 ImplicationChecksByTransitivity, 304406.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=686occurred in iteration=131, InterpolantAutomatonStates: 1934, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 2632.1ms AutomataMinimizationTime, 138 MinimizatonAttempts, 52544 StatesRemovedByMinimization, 130 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1086.1ms SsaConstructionTime, 15932.9ms SatisfiabilityAnalysisTime, 164271.3ms InterpolantComputationTime, 2670 NumberOfCodeBlocks, 2670 NumberOfCodeBlocksAsserted, 226 NumberOfCheckSat, 5062 ConstructedInterpolants, 524 QuantifiedInterpolants, 23707 SizeOfPredicates, 825 NumberOfNonLiveVariables, 12418 ConjunctsInSsa, 1053 ConjunctsInUnsatCore, 278 InterpolantComputations, 92 PerfectInterpolantSequences, 76/262 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