/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/test-easy1.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-07 16:42:20,230 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-07 16:42:20,233 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-07 16:42:20,267 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-07 16:42:20,325 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-07 16:42:20,365 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-07 16:42:20,365 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-07 16:42:20,366 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-07 16:42:20,366 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-07 16:42:20,367 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-07 16:42:20,368 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-07 16:42:20,368 INFO L138 SettingsManager]: * Use SBE=true [2021-10-07 16:42:20,368 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-07 16:42:20,368 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-07 16:42:20,369 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-07 16:42:20,369 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-07 16:42:20,369 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-07 16:42:20,369 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-07 16:42:20,369 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-07 16:42:20,370 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-07 16:42:20,370 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-07 16:42:20,370 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-07 16:42:20,370 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-07 16:42:20,371 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-07 16:42:20,371 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-07 16:42:20,371 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-07 16:42:20,371 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-07 16:42:20,372 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-07 16:42:20,372 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-07 16:42:20,372 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-07 16:42:20,372 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-07 16:42:20,372 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-07 16:42:20,373 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-07 16:42:20,373 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-07 16:42:20,373 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-07 16:42:20,373 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-07 16:42:20,373 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-07 16:42:20,374 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-07 16:42:20,729 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-07 16:42:20,755 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-07 16:42:20,758 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-07 16:42:20,760 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-07 16:42:20,760 INFO L275 PluginConnector]: CDTParser initialized [2021-10-07 16:42:20,761 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/test-easy1.wvr.c [2021-10-07 16:42:20,838 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b1a743727/55e7f6458c054b13801bc03045233a49/FLAGa8b56cbe0 [2021-10-07 16:42:21,465 INFO L306 CDTParser]: Found 1 translation units. [2021-10-07 16:42:21,466 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/test-easy1.wvr.c [2021-10-07 16:42:21,474 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b1a743727/55e7f6458c054b13801bc03045233a49/FLAGa8b56cbe0 [2021-10-07 16:42:21,830 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b1a743727/55e7f6458c054b13801bc03045233a49 [2021-10-07 16:42:21,833 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-07 16:42:21,842 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-07 16:42:21,844 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-07 16:42:21,844 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-07 16:42:21,853 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-07 16:42:21,853 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 04:42:21" (1/1) ... [2021-10-07 16:42:21,855 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@241ce5d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:42:21, skipping insertion in model container [2021-10-07 16:42:21,855 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 04:42:21" (1/1) ... [2021-10-07 16:42:21,863 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-07 16:42:21,881 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-07 16:42:22,057 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/test-easy1.wvr.c[1871,1884] [2021-10-07 16:42:22,061 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 16:42:22,076 INFO L203 MainTranslator]: Completed pre-run [2021-10-07 16:42:22,098 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/test-easy1.wvr.c[1871,1884] [2021-10-07 16:42:22,100 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 16:42:22,118 INFO L208 MainTranslator]: Completed translation [2021-10-07 16:42:22,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:42:22 WrapperNode [2021-10-07 16:42:22,119 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-07 16:42:22,121 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-07 16:42:22,121 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-07 16:42:22,121 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-07 16:42:22,130 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:42:22" (1/1) ... [2021-10-07 16:42:22,142 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:42:22" (1/1) ... [2021-10-07 16:42:22,165 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-07 16:42:22,166 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-07 16:42:22,166 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-07 16:42:22,166 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-07 16:42:22,176 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:42:22" (1/1) ... [2021-10-07 16:42:22,176 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:42:22" (1/1) ... [2021-10-07 16:42:22,180 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:42:22" (1/1) ... [2021-10-07 16:42:22,180 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:42:22" (1/1) ... [2021-10-07 16:42:22,192 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:42:22" (1/1) ... [2021-10-07 16:42:22,202 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:42:22" (1/1) ... [2021-10-07 16:42:22,204 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:42:22" (1/1) ... [2021-10-07 16:42:22,210 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-07 16:42:22,212 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-07 16:42:22,213 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-07 16:42:22,213 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-07 16:42:22,214 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:42:22" (1/1) ... [2021-10-07 16:42:22,223 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-07 16:42:22,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 16:42:22,254 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-07 16:42:22,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-07 16:42:22,335 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-07 16:42:22,335 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-07 16:42:22,336 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-07 16:42:22,336 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-07 16:42:22,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-07 16:42:22,336 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-07 16:42:22,336 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-07 16:42:22,337 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-07 16:42:22,337 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-07 16:42:22,337 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-07 16:42:22,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-07 16:42:22,340 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-07 16:42:22,760 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-07 16:42:22,763 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-07 16:42:22,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 04:42:22 BoogieIcfgContainer [2021-10-07 16:42:22,766 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-07 16:42:22,770 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-07 16:42:22,770 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-07 16:42:22,780 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-07 16:42:22,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 04:42:21" (1/3) ... [2021-10-07 16:42:22,781 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@beeb820 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 04:42:22, skipping insertion in model container [2021-10-07 16:42:22,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:42:22" (2/3) ... [2021-10-07 16:42:22,785 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@beeb820 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 04:42:22, skipping insertion in model container [2021-10-07 16:42:22,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 04:42:22" (3/3) ... [2021-10-07 16:42:22,787 INFO L111 eAbstractionObserver]: Analyzing ICFG test-easy1.wvr.c [2021-10-07 16:42:22,800 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-07 16:42:22,801 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-10-07 16:42:22,801 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-07 16:42:22,851 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:42:22,851 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:42:22,852 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:42:22,852 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:42:22,852 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:42:22,853 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:42:22,853 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:42:22,853 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:42:22,854 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:42:22,854 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:42:22,854 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:42:22,855 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:42:22,855 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:42:22,855 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:42:22,855 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:42:22,856 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:42:22,856 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:42:22,856 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:42:22,856 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:42:22,857 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:42:22,860 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:42:22,861 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:42:22,861 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:42:22,866 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:42:22,867 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:42:22,867 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:42:22,874 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-07 16:42:22,977 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-07 16:42:22,985 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-07 16:42:22,986 INFO L340 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2021-10-07 16:42:23,004 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-07 16:42:23,017 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 87 places, 86 transitions, 188 flow [2021-10-07 16:42:23,021 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 87 places, 86 transitions, 188 flow [2021-10-07 16:42:23,023 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 87 places, 86 transitions, 188 flow [2021-10-07 16:42:23,075 INFO L129 PetriNetUnfolder]: 6/84 cut-off events. [2021-10-07 16:42:23,076 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-07 16:42:23,083 INFO L84 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 84 events. 6/84 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 69 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2021-10-07 16:42:23,088 INFO L116 LiptonReduction]: Number of co-enabled transitions 496 [2021-10-07 16:42:31,010 INFO L131 LiptonReduction]: Checked pairs total: 578 [2021-10-07 16:42:31,011 INFO L133 LiptonReduction]: Total number of compositions: 84 [2021-10-07 16:42:31,021 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 25 transitions, 66 flow [2021-10-07 16:42:31,033 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 39 states, 29 states have (on average 2.8620689655172415) internal successors, (83), 38 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:42:31,036 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 29 states have (on average 2.8620689655172415) internal successors, (83), 38 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:42:31,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2021-10-07 16:42:31,041 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:42:31,042 INFO L512 BasicCegarLoop]: trace histogram [1] [2021-10-07 16:42:31,043 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:42:31,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:42:31,049 INFO L82 PathProgramCache]: Analyzing trace with hash 329, now seen corresponding path program 1 times [2021-10-07 16:42:31,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:42:31,062 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [149703747] [2021-10-07 16:42:31,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:42:31,063 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:42:31,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:42:31,065 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:42:31,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-07 16:42:31,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:42:31,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-07 16:42:31,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:42:31,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:42:31,123 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:42:31,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:42:31,124 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:42:31,125 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [149703747] [2021-10-07 16:42:31,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [149703747] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:42:31,126 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:42:31,126 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0, 0] imperfect sequences [] total 0 [2021-10-07 16:42:31,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513720391] [2021-10-07 16:42:31,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-07 16:42:31,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:42:31,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-07 16:42:31,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-07 16:42:31,166 INFO L87 Difference]: Start difference. First operand has 39 states, 29 states have (on average 2.8620689655172415) internal successors, (83), 38 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:42:31,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:42:31,179 INFO L93 Difference]: Finished difference Result 36 states and 80 transitions. [2021-10-07 16:42:31,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-07 16:42:31,181 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1 [2021-10-07 16:42:31,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:42:31,190 INFO L225 Difference]: With dead ends: 36 [2021-10-07 16:42:31,191 INFO L226 Difference]: Without dead ends: 36 [2021-10-07 16:42:31,192 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-07 16:42:31,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-10-07 16:42:31,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-10-07 16:42:31,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 29 states have (on average 2.7586206896551726) internal successors, (80), 35 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:42:31,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 80 transitions. [2021-10-07 16:42:31,229 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 80 transitions. Word has length 1 [2021-10-07 16:42:31,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:42:31,229 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 80 transitions. [2021-10-07 16:42:31,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:42:31,230 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 80 transitions. [2021-10-07 16:42:31,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-07 16:42:31,230 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:42:31,230 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-07 16:42:31,245 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-07 16:42:31,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:42:31,444 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:42:31,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:42:31,454 INFO L82 PathProgramCache]: Analyzing trace with hash 322030, now seen corresponding path program 1 times [2021-10-07 16:42:31,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:42:31,458 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1580057186] [2021-10-07 16:42:31,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:42:31,458 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:42:31,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:42:31,463 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:42:31,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-07 16:42:31,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:42:31,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-07 16:42:31,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:42:31,681 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-07 16:42:31,682 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 1 case distinctions, treesize of input 9 treesize of output 14 [2021-10-07 16:42:31,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:42:31,720 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:42:31,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:42:31,733 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:42:31,733 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1580057186] [2021-10-07 16:42:31,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1580057186] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:42:31,734 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:42:31,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-07 16:42:31,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124744285] [2021-10-07 16:42:31,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 16:42:31,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:42:31,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 16:42:31,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 16:42:31,738 INFO L87 Difference]: Start difference. First operand 36 states and 80 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:42:31,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:42:31,775 INFO L93 Difference]: Finished difference Result 32 states and 72 transitions. [2021-10-07 16:42:31,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 16:42:31,776 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-07 16:42:31,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:42:31,777 INFO L225 Difference]: With dead ends: 32 [2021-10-07 16:42:31,778 INFO L226 Difference]: Without dead ends: 32 [2021-10-07 16:42:31,778 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 16:42:31,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-10-07 16:42:31,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-10-07 16:42:31,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 2.6666666666666665) internal successors, (72), 31 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:42:31,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 72 transitions. [2021-10-07 16:42:31,785 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 72 transitions. Word has length 3 [2021-10-07 16:42:31,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:42:31,786 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 72 transitions. [2021-10-07 16:42:31,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:42:31,787 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 72 transitions. [2021-10-07 16:42:31,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-07 16:42:31,787 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:42:31,788 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-07 16:42:31,803 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-07 16:42:32,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:42:32,002 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:42:32,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:42:32,002 INFO L82 PathProgramCache]: Analyzing trace with hash 322031, now seen corresponding path program 1 times [2021-10-07 16:42:32,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:42:32,005 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [830899330] [2021-10-07 16:42:32,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:42:32,006 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:42:32,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:42:32,010 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:42:32,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-07 16:42:32,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:42:32,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-07 16:42:32,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:42:32,190 INFO L354 Elim1Store]: treesize reduction 76, result has 30.3 percent of original size [2021-10-07 16:42:32,190 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 38 [2021-10-07 16:42:32,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:42:32,267 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:42:32,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:42:32,330 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:42:32,330 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [830899330] [2021-10-07 16:42:32,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [830899330] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:42:32,331 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:42:32,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 16:42:32,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218355672] [2021-10-07 16:42:32,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 16:42:32,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:42:32,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 16:42:32,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:42:32,333 INFO L87 Difference]: Start difference. First operand 32 states and 72 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:42:32,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:42:32,359 INFO L93 Difference]: Finished difference Result 28 states and 64 transitions. [2021-10-07 16:42:32,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 16:42:32,360 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-07 16:42:32,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:42:32,361 INFO L225 Difference]: With dead ends: 28 [2021-10-07 16:42:32,361 INFO L226 Difference]: Without dead ends: 28 [2021-10-07 16:42:32,361 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:42:32,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-10-07 16:42:32,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-10-07 16:42:32,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 25 states have (on average 2.56) internal successors, (64), 27 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:42:32,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 64 transitions. [2021-10-07 16:42:32,366 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 64 transitions. Word has length 3 [2021-10-07 16:42:32,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:42:32,367 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 64 transitions. [2021-10-07 16:42:32,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:42:32,367 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 64 transitions. [2021-10-07 16:42:32,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-07 16:42:32,368 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:42:32,368 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-07 16:42:32,381 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-07 16:42:32,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:42:32,569 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:42:32,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:42:32,571 INFO L82 PathProgramCache]: Analyzing trace with hash 309476744, now seen corresponding path program 1 times [2021-10-07 16:42:32,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:42:32,572 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [692998260] [2021-10-07 16:42:32,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:42:32,573 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:42:32,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:42:32,574 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:42:32,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-07 16:42:32,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:42:32,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-07 16:42:32,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:42:32,650 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-07 16:42:32,651 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 1 case distinctions, treesize of input 9 treesize of output 14 [2021-10-07 16:42:32,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:42:32,695 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:42:32,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:42:32,720 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:42:32,722 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [692998260] [2021-10-07 16:42:32,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [692998260] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:42:32,722 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:42:32,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-07 16:42:32,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406815617] [2021-10-07 16:42:32,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 16:42:32,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:42:32,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 16:42:32,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 16:42:32,726 INFO L87 Difference]: Start difference. First operand 28 states and 64 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:42:32,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:42:32,754 INFO L93 Difference]: Finished difference Result 24 states and 52 transitions. [2021-10-07 16:42:32,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 16:42:32,761 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-07 16:42:32,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:42:32,762 INFO L225 Difference]: With dead ends: 24 [2021-10-07 16:42:32,762 INFO L226 Difference]: Without dead ends: 24 [2021-10-07 16:42:32,763 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 16:42:32,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-10-07 16:42:32,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-10-07 16:42:32,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 22 states have (on average 2.3636363636363638) internal successors, (52), 23 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:42:32,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 52 transitions. [2021-10-07 16:42:32,772 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 52 transitions. Word has length 5 [2021-10-07 16:42:32,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:42:32,772 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 52 transitions. [2021-10-07 16:42:32,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:42:32,774 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 52 transitions. [2021-10-07 16:42:32,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-07 16:42:32,775 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:42:32,775 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-07 16:42:32,793 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-07 16:42:32,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:42:32,994 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:42:32,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:42:32,995 INFO L82 PathProgramCache]: Analyzing trace with hash 309476745, now seen corresponding path program 1 times [2021-10-07 16:42:32,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:42:32,995 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [255877859] [2021-10-07 16:42:32,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:42:32,996 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:42:32,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:42:32,998 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:42:33,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-07 16:42:33,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:42:33,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 16:42:33,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:42:33,159 INFO L354 Elim1Store]: treesize reduction 76, result has 30.3 percent of original size [2021-10-07 16:42:33,160 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 50 [2021-10-07 16:42:33,171 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 49 [2021-10-07 16:42:33,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:42:33,330 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:42:33,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:42:33,415 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:42:33,415 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [255877859] [2021-10-07 16:42:33,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [255877859] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:42:33,416 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:42:33,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 16:42:33,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700409044] [2021-10-07 16:42:33,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 16:42:33,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:42:33,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 16:42:33,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:42:33,418 INFO L87 Difference]: Start difference. First operand 24 states and 52 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:42:33,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:42:33,431 INFO L93 Difference]: Finished difference Result 20 states and 40 transitions. [2021-10-07 16:42:33,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 16:42:33,432 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-07 16:42:33,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:42:33,433 INFO L225 Difference]: With dead ends: 20 [2021-10-07 16:42:33,433 INFO L226 Difference]: Without dead ends: 20 [2021-10-07 16:42:33,434 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 34.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:42:33,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-10-07 16:42:33,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-10-07 16:42:33,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 19 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:42:33,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 40 transitions. [2021-10-07 16:42:33,437 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 40 transitions. Word has length 5 [2021-10-07 16:42:33,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:42:33,438 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 40 transitions. [2021-10-07 16:42:33,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:42:33,438 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 40 transitions. [2021-10-07 16:42:33,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-07 16:42:33,439 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:42:33,439 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:42:33,451 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-07 16:42:33,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:42:33,647 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:42:33,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:42:33,648 INFO L82 PathProgramCache]: Analyzing trace with hash -923328175, now seen corresponding path program 1 times [2021-10-07 16:42:33,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:42:33,650 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1698611545] [2021-10-07 16:42:33,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:42:33,650 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:42:33,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:42:33,651 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:42:33,654 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-07 16:42:33,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:42:33,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-07 16:42:33,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:42:33,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:42:33,830 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:42:33,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:42:33,875 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:42:33,875 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1698611545] [2021-10-07 16:42:33,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1698611545] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:42:33,876 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:42:33,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 16:42:33,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494907948] [2021-10-07 16:42:33,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 16:42:33,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:42:33,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 16:42:33,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:42:33,878 INFO L87 Difference]: Start difference. First operand 20 states and 40 transitions. Second operand has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:42:33,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:42:33,902 INFO L93 Difference]: Finished difference Result 37 states and 77 transitions. [2021-10-07 16:42:33,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 16:42:33,903 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 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 11 [2021-10-07 16:42:33,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:42:33,905 INFO L225 Difference]: With dead ends: 37 [2021-10-07 16:42:33,905 INFO L226 Difference]: Without dead ends: 32 [2021-10-07 16:42:33,906 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:42:33,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-10-07 16:42:33,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-10-07 16:42:33,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 2.161290322580645) internal successors, (67), 31 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:42:33,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 67 transitions. [2021-10-07 16:42:33,912 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 67 transitions. Word has length 11 [2021-10-07 16:42:33,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:42:33,912 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 67 transitions. [2021-10-07 16:42:33,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:42:33,913 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 67 transitions. [2021-10-07 16:42:33,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-07 16:42:33,914 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:42:33,914 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:42:33,934 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-07 16:42:34,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:42:34,127 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:42:34,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:42:34,128 INFO L82 PathProgramCache]: Analyzing trace with hash -1568461469, now seen corresponding path program 1 times [2021-10-07 16:42:34,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:42:34,131 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [197243420] [2021-10-07 16:42:34,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:42:34,132 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:42:34,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:42:34,138 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:42:34,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-07 16:42:34,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:42:34,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-07 16:42:34,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:42:34,273 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:42:34,273 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:42:34,323 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:42:34,323 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:42:34,324 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [197243420] [2021-10-07 16:42:34,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [197243420] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:42:34,324 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:42:34,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-07 16:42:34,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49486959] [2021-10-07 16:42:34,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-07 16:42:34,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:42:34,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-07 16:42:34,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-07 16:42:34,328 INFO L87 Difference]: Start difference. First operand 32 states and 67 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:42:34,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:42:34,388 INFO L93 Difference]: Finished difference Result 38 states and 77 transitions. [2021-10-07 16:42:34,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-07 16:42:34,388 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-07 16:42:34,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:42:34,389 INFO L225 Difference]: With dead ends: 38 [2021-10-07 16:42:34,389 INFO L226 Difference]: Without dead ends: 30 [2021-10-07 16:42:34,390 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 27.5ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-07 16:42:34,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-10-07 16:42:34,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-10-07 16:42:34,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 2.2413793103448274) internal successors, (65), 29 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:42:34,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 65 transitions. [2021-10-07 16:42:34,394 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 65 transitions. Word has length 12 [2021-10-07 16:42:34,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:42:34,395 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 65 transitions. [2021-10-07 16:42:34,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:42:34,395 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 65 transitions. [2021-10-07 16:42:34,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-07 16:42:34,396 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:42:34,396 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:42:34,410 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-07 16:42:34,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:42:34,608 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:42:34,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:42:34,609 INFO L82 PathProgramCache]: Analyzing trace with hash -741158495, now seen corresponding path program 2 times [2021-10-07 16:42:34,610 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:42:34,610 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1849266131] [2021-10-07 16:42:34,611 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 16:42:34,611 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:42:34,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:42:34,612 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:42:34,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-07 16:42:34,696 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 16:42:34,696 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:42:34,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-07 16:42:34,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:42:34,795 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:42:34,795 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:42:34,854 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:42:34,855 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:42:34,855 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1849266131] [2021-10-07 16:42:34,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1849266131] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:42:34,855 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:42:34,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-07 16:42:34,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067345871] [2021-10-07 16:42:34,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-07 16:42:34,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:42:34,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-07 16:42:34,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-07 16:42:34,857 INFO L87 Difference]: Start difference. First operand 30 states and 65 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:42:34,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:42:34,916 INFO L93 Difference]: Finished difference Result 36 states and 69 transitions. [2021-10-07 16:42:34,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 16:42:34,917 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-07 16:42:34,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:42:34,917 INFO L225 Difference]: With dead ends: 36 [2021-10-07 16:42:34,917 INFO L226 Difference]: Without dead ends: 36 [2021-10-07 16:42:34,918 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.0ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-07 16:42:34,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-10-07 16:42:34,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 28. [2021-10-07 16:42:34,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 2.185185185185185) internal successors, (59), 27 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:42:34,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 59 transitions. [2021-10-07 16:42:34,925 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 59 transitions. Word has length 12 [2021-10-07 16:42:34,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:42:34,925 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 59 transitions. [2021-10-07 16:42:34,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:42:34,926 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 59 transitions. [2021-10-07 16:42:34,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-07 16:42:34,927 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:42:34,927 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:42:34,943 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-07 16:42:35,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:42:35,138 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:42:35,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:42:35,139 INFO L82 PathProgramCache]: Analyzing trace with hash 288896295, now seen corresponding path program 1 times [2021-10-07 16:42:35,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:42:35,140 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2027448901] [2021-10-07 16:42:35,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:42:35,141 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:42:35,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:42:35,142 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:42:35,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-07 16:42:35,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:42:35,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-07 16:42:35,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:42:35,295 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:42:35,295 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:42:35,363 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:42:35,363 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:42:35,364 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2027448901] [2021-10-07 16:42:35,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2027448901] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-07 16:42:35,367 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 16:42:35,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2021-10-07 16:42:35,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715933183] [2021-10-07 16:42:35,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 16:42:35,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:42:35,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 16:42:35,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-07 16:42:35,369 INFO L87 Difference]: Start difference. First operand 28 states and 59 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:42:35,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:42:35,406 INFO L93 Difference]: Finished difference Result 44 states and 89 transitions. [2021-10-07 16:42:35,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 16:42:35,407 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-07 16:42:35,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:42:35,409 INFO L225 Difference]: With dead ends: 44 [2021-10-07 16:42:35,409 INFO L226 Difference]: Without dead ends: 44 [2021-10-07 16:42:35,410 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.4ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-07 16:42:35,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-10-07 16:42:35,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 34. [2021-10-07 16:42:35,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 2.212121212121212) internal successors, (73), 33 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:42:35,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 73 transitions. [2021-10-07 16:42:35,425 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 73 transitions. Word has length 12 [2021-10-07 16:42:35,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:42:35,426 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 73 transitions. [2021-10-07 16:42:35,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:42:35,426 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 73 transitions. [2021-10-07 16:42:35,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-07 16:42:35,427 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:42:35,427 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:42:35,442 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-07 16:42:35,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:42:35,641 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:42:35,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:42:35,642 INFO L82 PathProgramCache]: Analyzing trace with hash -44988425, now seen corresponding path program 1 times [2021-10-07 16:42:35,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:42:35,643 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1861405846] [2021-10-07 16:42:35,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:42:35,643 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:42:35,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:42:35,644 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:42:35,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-07 16:42:35,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:42:35,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 16:42:35,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:42:35,854 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:42:35,854 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:42:35,916 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 16:42:35,916 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:42:35,917 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1861405846] [2021-10-07 16:42:35,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1861405846] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:42:35,917 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:42:35,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 2] total 5 [2021-10-07 16:42:35,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938249150] [2021-10-07 16:42:35,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-07 16:42:35,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:42:35,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-07 16:42:35,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-07 16:42:35,919 INFO L87 Difference]: Start difference. First operand 34 states and 73 transitions. Second operand has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:42:36,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:42:36,015 INFO L93 Difference]: Finished difference Result 65 states and 142 transitions. [2021-10-07 16:42:36,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 16:42:36,016 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 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 13 [2021-10-07 16:42:36,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:42:36,017 INFO L225 Difference]: With dead ends: 65 [2021-10-07 16:42:36,017 INFO L226 Difference]: Without dead ends: 60 [2021-10-07 16:42:36,019 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 60.3ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-07 16:42:36,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-10-07 16:42:36,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 44. [2021-10-07 16:42:36,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 2.4651162790697674) internal successors, (106), 43 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:42:36,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 106 transitions. [2021-10-07 16:42:36,025 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 106 transitions. Word has length 13 [2021-10-07 16:42:36,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:42:36,026 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 106 transitions. [2021-10-07 16:42:36,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:42:36,026 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 106 transitions. [2021-10-07 16:42:36,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-07 16:42:36,028 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:42:36,028 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:42:36,041 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-07 16:42:36,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:42:36,230 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:42:36,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:42:36,230 INFO L82 PathProgramCache]: Analyzing trace with hash 791884203, now seen corresponding path program 2 times [2021-10-07 16:42:36,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:42:36,231 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1853113177] [2021-10-07 16:42:36,231 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 16:42:36,232 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:42:36,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:42:36,233 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:42:36,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-07 16:42:36,337 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 16:42:36,338 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:42:36,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 16:42:36,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:42:36,485 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:42:36,485 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:42:36,552 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 16:42:36,553 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:42:36,553 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1853113177] [2021-10-07 16:42:36,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1853113177] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:42:36,553 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:42:36,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 2] total 5 [2021-10-07 16:42:36,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120501075] [2021-10-07 16:42:36,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-07 16:42:36,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:42:36,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-07 16:42:36,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-07 16:42:36,555 INFO L87 Difference]: Start difference. First operand 44 states and 106 transitions. Second operand has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:42:36,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:42:36,644 INFO L93 Difference]: Finished difference Result 81 states and 187 transitions. [2021-10-07 16:42:36,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 16:42:36,645 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 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 13 [2021-10-07 16:42:36,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:42:36,646 INFO L225 Difference]: With dead ends: 81 [2021-10-07 16:42:36,646 INFO L226 Difference]: Without dead ends: 76 [2021-10-07 16:42:36,647 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 69.6ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-07 16:42:36,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-10-07 16:42:36,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 62. [2021-10-07 16:42:36,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 2.5737704918032787) internal successors, (157), 61 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:42:36,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 157 transitions. [2021-10-07 16:42:36,653 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 157 transitions. Word has length 13 [2021-10-07 16:42:36,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:42:36,654 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 157 transitions. [2021-10-07 16:42:36,654 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:42:36,654 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 157 transitions. [2021-10-07 16:42:36,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-07 16:42:36,655 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:42:36,655 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:42:36,669 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-07 16:42:36,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:42:36,869 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:42:36,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:42:36,870 INFO L82 PathProgramCache]: Analyzing trace with hash -1805480153, now seen corresponding path program 3 times [2021-10-07 16:42:36,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:42:36,871 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2114026939] [2021-10-07 16:42:36,871 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 16:42:36,871 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:42:36,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:42:36,872 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:42:36,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-07 16:42:36,975 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-07 16:42:36,975 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:42:36,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 16:42:36,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:42:37,212 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:42:37,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:42:37,494 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:42:37,497 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:42:37,497 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2114026939] [2021-10-07 16:42:37,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2114026939] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:42:37,497 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:42:37,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2021-10-07 16:42:37,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740991131] [2021-10-07 16:42:37,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-07 16:42:37,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:42:37,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-07 16:42:37,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-10-07 16:42:37,502 INFO L87 Difference]: Start difference. First operand 62 states and 157 transitions. Second operand has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:42:38,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:42:38,460 INFO L93 Difference]: Finished difference Result 207 states and 449 transitions. [2021-10-07 16:42:38,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-07 16:42:38,460 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 10 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 14 [2021-10-07 16:42:38,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:42:38,463 INFO L225 Difference]: With dead ends: 207 [2021-10-07 16:42:38,463 INFO L226 Difference]: Without dead ends: 202 [2021-10-07 16:42:38,463 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 769.8ms TimeCoverageRelationStatistics Valid=114, Invalid=266, Unknown=0, NotChecked=0, Total=380 [2021-10-07 16:42:38,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2021-10-07 16:42:38,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 80. [2021-10-07 16:42:38,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 2.8354430379746836) internal successors, (224), 79 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:42:38,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 224 transitions. [2021-10-07 16:42:38,472 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 224 transitions. Word has length 14 [2021-10-07 16:42:38,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:42:38,473 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 224 transitions. [2021-10-07 16:42:38,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:42:38,473 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 224 transitions. [2021-10-07 16:42:38,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-07 16:42:38,474 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:42:38,475 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:42:38,490 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-07 16:42:38,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:42:38,688 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:42:38,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:42:38,689 INFO L82 PathProgramCache]: Analyzing trace with hash 389514619, now seen corresponding path program 4 times [2021-10-07 16:42:38,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:42:38,690 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [495543477] [2021-10-07 16:42:38,690 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 16:42:38,690 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:42:38,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:42:38,691 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:42:38,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-07 16:42:38,783 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 16:42:38,783 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:42:38,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 16:42:38,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:42:38,939 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:42:38,939 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:42:39,143 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:42:39,143 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:42:39,144 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [495543477] [2021-10-07 16:42:39,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [495543477] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:42:39,144 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:42:39,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-07 16:42:39,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841655641] [2021-10-07 16:42:39,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 16:42:39,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:42:39,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 16:42:39,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-10-07 16:42:39,148 INFO L87 Difference]: Start difference. First operand 80 states and 224 transitions. Second operand has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:42:39,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:42:39,746 INFO L93 Difference]: Finished difference Result 138 states and 357 transitions. [2021-10-07 16:42:39,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-07 16:42:39,747 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-07 16:42:39,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:42:39,749 INFO L225 Difference]: With dead ends: 138 [2021-10-07 16:42:39,749 INFO L226 Difference]: Without dead ends: 132 [2021-10-07 16:42:39,749 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 487.0ms TimeCoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2021-10-07 16:42:39,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-10-07 16:42:39,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 96. [2021-10-07 16:42:39,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 95 states have (on average 2.968421052631579) internal successors, (282), 95 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:42:39,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 282 transitions. [2021-10-07 16:42:39,769 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 282 transitions. Word has length 14 [2021-10-07 16:42:39,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:42:39,769 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 282 transitions. [2021-10-07 16:42:39,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:42:39,770 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 282 transitions. [2021-10-07 16:42:39,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-07 16:42:39,774 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:42:39,775 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:42:39,796 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-07 16:42:39,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:42:39,993 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:42:39,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:42:39,994 INFO L82 PathProgramCache]: Analyzing trace with hash 371080593, now seen corresponding path program 5 times [2021-10-07 16:42:39,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:42:39,995 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1296459615] [2021-10-07 16:42:39,995 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 16:42:39,996 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:42:39,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:42:39,997 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:42:39,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-07 16:42:40,107 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 16:42:40,107 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:42:40,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 16:42:40,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:42:40,239 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:42:40,240 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:42:40,429 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:42:40,429 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:42:40,429 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1296459615] [2021-10-07 16:42:40,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1296459615] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:42:40,429 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:42:40,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-07 16:42:40,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366400923] [2021-10-07 16:42:40,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 16:42:40,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:42:40,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 16:42:40,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-10-07 16:42:40,431 INFO L87 Difference]: Start difference. First operand 96 states and 282 transitions. Second operand has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:42:40,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:42:40,652 INFO L93 Difference]: Finished difference Result 112 states and 302 transitions. [2021-10-07 16:42:40,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-07 16:42:40,653 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-07 16:42:40,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:42:40,654 INFO L225 Difference]: With dead ends: 112 [2021-10-07 16:42:40,654 INFO L226 Difference]: Without dead ends: 108 [2021-10-07 16:42:40,654 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 190.0ms TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2021-10-07 16:42:40,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-10-07 16:42:40,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 100. [2021-10-07 16:42:40,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 2.888888888888889) internal successors, (286), 99 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:42:40,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 286 transitions. [2021-10-07 16:42:40,661 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 286 transitions. Word has length 14 [2021-10-07 16:42:40,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:42:40,662 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 286 transitions. [2021-10-07 16:42:40,662 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:42:40,662 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 286 transitions. [2021-10-07 16:42:40,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-07 16:42:40,663 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:42:40,664 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:42:40,680 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-07 16:42:40,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:42:40,865 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:42:40,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:42:40,865 INFO L82 PathProgramCache]: Analyzing trace with hash -795359833, now seen corresponding path program 6 times [2021-10-07 16:42:40,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:42:40,866 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1918786210] [2021-10-07 16:42:40,867 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 16:42:40,867 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:42:40,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:42:40,868 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:42:40,869 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-07 16:42:40,982 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-07 16:42:40,982 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:42:40,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 16:42:40,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:42:41,138 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:42:41,139 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:42:41,339 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:42:41,340 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:42:41,340 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1918786210] [2021-10-07 16:42:41,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1918786210] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:42:41,340 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:42:41,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-07 16:42:41,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609194869] [2021-10-07 16:42:41,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 16:42:41,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:42:41,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 16:42:41,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-10-07 16:42:41,342 INFO L87 Difference]: Start difference. First operand 100 states and 286 transitions. Second operand has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:42:41,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:42:41,792 INFO L93 Difference]: Finished difference Result 222 states and 530 transitions. [2021-10-07 16:42:41,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-07 16:42:41,793 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-07 16:42:41,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:42:41,795 INFO L225 Difference]: With dead ends: 222 [2021-10-07 16:42:41,796 INFO L226 Difference]: Without dead ends: 222 [2021-10-07 16:42:41,796 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 355.5ms TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2021-10-07 16:42:41,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2021-10-07 16:42:41,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 124. [2021-10-07 16:42:41,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 123 states have (on average 3.008130081300813) internal successors, (370), 123 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:42:41,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 370 transitions. [2021-10-07 16:42:41,805 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 370 transitions. Word has length 14 [2021-10-07 16:42:41,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:42:41,805 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 370 transitions. [2021-10-07 16:42:41,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:42:41,806 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 370 transitions. [2021-10-07 16:42:41,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-07 16:42:41,807 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:42:41,807 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:42:41,822 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-07 16:42:42,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:42:42,020 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:42:42,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:42:42,021 INFO L82 PathProgramCache]: Analyzing trace with hash 63514697, now seen corresponding path program 7 times [2021-10-07 16:42:42,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:42:42,021 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1863125752] [2021-10-07 16:42:42,021 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 16:42:42,022 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:42:42,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:42:42,023 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:42:42,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-07 16:42:42,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:42:42,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 16:42:42,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:42:42,294 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:42:42,294 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:42:42,464 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:42:42,465 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:42:42,465 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1863125752] [2021-10-07 16:42:42,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1863125752] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:42:42,465 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:42:42,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-07 16:42:42,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587141252] [2021-10-07 16:42:42,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 16:42:42,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:42:42,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 16:42:42,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-10-07 16:42:42,467 INFO L87 Difference]: Start difference. First operand 124 states and 370 transitions. Second operand has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:42:42,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:42:42,957 INFO L93 Difference]: Finished difference Result 170 states and 434 transitions. [2021-10-07 16:42:42,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-07 16:42:42,958 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-07 16:42:42,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:42:42,961 INFO L225 Difference]: With dead ends: 170 [2021-10-07 16:42:42,961 INFO L226 Difference]: Without dead ends: 162 [2021-10-07 16:42:42,963 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 404.8ms TimeCoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2021-10-07 16:42:42,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-10-07 16:42:42,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 120. [2021-10-07 16:42:42,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 2.907563025210084) internal successors, (346), 119 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:42:42,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 346 transitions. [2021-10-07 16:42:42,970 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 346 transitions. Word has length 14 [2021-10-07 16:42:42,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:42:42,971 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 346 transitions. [2021-10-07 16:42:42,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:42:42,971 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 346 transitions. [2021-10-07 16:42:42,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-07 16:42:42,972 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:42:42,972 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:42:42,987 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-07 16:42:43,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:42:43,187 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:42:43,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:42:43,188 INFO L82 PathProgramCache]: Analyzing trace with hash 918821351, now seen corresponding path program 8 times [2021-10-07 16:42:43,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:42:43,189 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [916482816] [2021-10-07 16:42:43,189 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 16:42:43,189 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:42:43,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:42:43,190 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:42:43,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-07 16:42:43,320 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 16:42:43,320 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:42:43,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 16:42:43,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:42:43,448 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:42:43,449 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:42:43,628 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:42:43,628 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:42:43,629 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [916482816] [2021-10-07 16:42:43,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [916482816] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:42:43,629 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:42:43,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-07 16:42:43,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957815111] [2021-10-07 16:42:43,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 16:42:43,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:42:43,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 16:42:43,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-10-07 16:42:43,631 INFO L87 Difference]: Start difference. First operand 120 states and 346 transitions. Second operand has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:42:44,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:42:44,011 INFO L93 Difference]: Finished difference Result 164 states and 411 transitions. [2021-10-07 16:42:44,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-07 16:42:44,012 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-07 16:42:44,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:42:44,013 INFO L225 Difference]: With dead ends: 164 [2021-10-07 16:42:44,013 INFO L226 Difference]: Without dead ends: 154 [2021-10-07 16:42:44,014 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 352.2ms TimeCoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2021-10-07 16:42:44,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-10-07 16:42:44,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 126. [2021-10-07 16:42:44,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 2.832) internal successors, (354), 125 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:42:44,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 354 transitions. [2021-10-07 16:42:44,021 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 354 transitions. Word has length 14 [2021-10-07 16:42:44,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:42:44,022 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 354 transitions. [2021-10-07 16:42:44,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:42:44,022 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 354 transitions. [2021-10-07 16:42:44,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-07 16:42:44,023 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:42:44,023 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:42:44,032 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2021-10-07 16:42:44,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:42:44,226 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:42:44,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:42:44,227 INFO L82 PathProgramCache]: Analyzing trace with hash 1071567585, now seen corresponding path program 9 times [2021-10-07 16:42:44,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:42:44,227 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [678653804] [2021-10-07 16:42:44,228 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 16:42:44,228 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:42:44,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:42:44,230 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:42:44,233 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-07 16:42:44,366 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 16:42:44,366 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:42:44,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 16:42:44,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:42:44,551 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:42:44,551 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:42:44,718 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:42:44,718 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:42:44,719 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [678653804] [2021-10-07 16:42:44,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [678653804] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:42:44,719 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:42:44,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-07 16:42:44,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276971541] [2021-10-07 16:42:44,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 16:42:44,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:42:44,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 16:42:44,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-10-07 16:42:44,721 INFO L87 Difference]: Start difference. First operand 126 states and 354 transitions. Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:42:44,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:42:44,891 INFO L93 Difference]: Finished difference Result 172 states and 454 transitions. [2021-10-07 16:42:44,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-07 16:42:44,892 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 9 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 14 [2021-10-07 16:42:44,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:42:44,893 INFO L225 Difference]: With dead ends: 172 [2021-10-07 16:42:44,893 INFO L226 Difference]: Without dead ends: 172 [2021-10-07 16:42:44,893 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 142.3ms TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-10-07 16:42:44,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2021-10-07 16:42:44,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 122. [2021-10-07 16:42:44,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 121 states have (on average 2.8595041322314048) internal successors, (346), 121 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:42:44,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 346 transitions. [2021-10-07 16:42:44,899 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 346 transitions. Word has length 14 [2021-10-07 16:42:44,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:42:44,900 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 346 transitions. [2021-10-07 16:42:44,900 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:42:44,900 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 346 transitions. [2021-10-07 16:42:44,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-07 16:42:44,902 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:42:44,902 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:42:44,918 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-07 16:42:45,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:42:45,113 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:42:45,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:42:45,113 INFO L82 PathProgramCache]: Analyzing trace with hash -217486873, now seen corresponding path program 10 times [2021-10-07 16:42:45,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:42:45,114 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [707403098] [2021-10-07 16:42:45,114 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 16:42:45,115 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:42:45,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:42:45,116 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:42:45,122 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-07 16:42:45,258 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 16:42:45,258 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:42:45,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 16:42:45,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:42:45,416 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:42:45,416 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:42:45,596 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:42:45,597 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:42:45,597 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [707403098] [2021-10-07 16:42:45,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [707403098] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:42:45,597 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:42:45,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-07 16:42:45,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584166160] [2021-10-07 16:42:45,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 16:42:45,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:42:45,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 16:42:45,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-10-07 16:42:45,599 INFO L87 Difference]: Start difference. First operand 122 states and 346 transitions. Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:42:45,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:42:45,719 INFO L93 Difference]: Finished difference Result 192 states and 530 transitions. [2021-10-07 16:42:45,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-07 16:42:45,719 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 9 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 15 [2021-10-07 16:42:45,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:42:45,722 INFO L225 Difference]: With dead ends: 192 [2021-10-07 16:42:45,722 INFO L226 Difference]: Without dead ends: 192 [2021-10-07 16:42:45,723 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 153.4ms TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-10-07 16:42:45,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2021-10-07 16:42:45,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 106. [2021-10-07 16:42:45,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 2.8666666666666667) internal successors, (301), 105 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:42:45,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 301 transitions. [2021-10-07 16:42:45,730 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 301 transitions. Word has length 15 [2021-10-07 16:42:45,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:42:45,731 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 301 transitions. [2021-10-07 16:42:45,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:42:45,732 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 301 transitions. [2021-10-07 16:42:45,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-07 16:42:45,732 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:42:45,733 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:42:45,749 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Ended with exit code 0 [2021-10-07 16:42:45,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:42:45,945 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:42:45,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:42:45,946 INFO L82 PathProgramCache]: Analyzing trace with hash -1964068431, now seen corresponding path program 11 times [2021-10-07 16:42:45,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:42:45,947 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [209253111] [2021-10-07 16:42:45,947 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 16:42:45,947 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:42:45,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:42:45,950 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:42:45,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-07 16:42:46,103 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-07 16:42:46,104 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:42:46,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 16:42:46,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:42:46,302 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:42:46,302 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:42:46,410 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-07 16:42:46,410 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:42:46,411 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [209253111] [2021-10-07 16:42:46,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [209253111] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:42:46,411 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:42:46,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3] total 8 [2021-10-07 16:42:46,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237745644] [2021-10-07 16:42:46,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 16:42:46,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:42:46,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 16:42:46,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-07 16:42:46,413 INFO L87 Difference]: Start difference. First operand 106 states and 301 transitions. Second operand has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:42:46,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:42:46,725 INFO L93 Difference]: Finished difference Result 187 states and 503 transitions. [2021-10-07 16:42:46,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-07 16:42:46,725 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 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 15 [2021-10-07 16:42:46,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:42:46,727 INFO L225 Difference]: With dead ends: 187 [2021-10-07 16:42:46,727 INFO L226 Difference]: Without dead ends: 182 [2021-10-07 16:42:46,728 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 168.5ms TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-10-07 16:42:46,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-10-07 16:42:46,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 136. [2021-10-07 16:42:46,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 135 states have (on average 2.9925925925925925) internal successors, (404), 135 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:42:46,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 404 transitions. [2021-10-07 16:42:46,736 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 404 transitions. Word has length 15 [2021-10-07 16:42:46,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:42:46,737 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 404 transitions. [2021-10-07 16:42:46,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:42:46,737 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 404 transitions. [2021-10-07 16:42:46,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-07 16:42:46,738 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:42:46,738 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:42:46,751 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-10-07 16:42:46,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:42:46,951 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:42:46,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:42:46,952 INFO L82 PathProgramCache]: Analyzing trace with hash -715109583, now seen corresponding path program 12 times [2021-10-07 16:42:46,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:42:46,953 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2037777915] [2021-10-07 16:42:46,953 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 16:42:46,953 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:42:46,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:42:46,955 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:42:46,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-07 16:42:47,142 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-07 16:42:47,142 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:42:47,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 16:42:47,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:42:47,357 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:42:47,357 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:42:47,454 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 16:42:47,454 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:42:47,454 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2037777915] [2021-10-07 16:42:47,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2037777915] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:42:47,455 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:42:47,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3] total 8 [2021-10-07 16:42:47,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719099674] [2021-10-07 16:42:47,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 16:42:47,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:42:47,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 16:42:47,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-07 16:42:47,456 INFO L87 Difference]: Start difference. First operand 136 states and 404 transitions. Second operand has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:42:47,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:42:47,690 INFO L93 Difference]: Finished difference Result 199 states and 543 transitions. [2021-10-07 16:42:47,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-07 16:42:47,691 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 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 15 [2021-10-07 16:42:47,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:42:47,693 INFO L225 Difference]: With dead ends: 199 [2021-10-07 16:42:47,693 INFO L226 Difference]: Without dead ends: 194 [2021-10-07 16:42:47,694 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 157.3ms TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-07 16:42:47,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2021-10-07 16:42:47,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 164. [2021-10-07 16:42:47,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 163 states have (on average 2.9754601226993866) internal successors, (485), 163 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:42:47,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 485 transitions. [2021-10-07 16:42:47,703 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 485 transitions. Word has length 15 [2021-10-07 16:42:47,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:42:47,703 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 485 transitions. [2021-10-07 16:42:47,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:42:47,704 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 485 transitions. [2021-10-07 16:42:47,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 16:42:47,705 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:42:47,705 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:42:47,721 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-10-07 16:42:47,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:42:47,918 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:42:47,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:42:47,919 INFO L82 PathProgramCache]: Analyzing trace with hash 1705342561, now seen corresponding path program 13 times [2021-10-07 16:42:47,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:42:47,920 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [100456614] [2021-10-07 16:42:47,920 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 16:42:47,920 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:42:47,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:42:47,922 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:42:47,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-10-07 16:42:48,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:42:48,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-07 16:42:48,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:42:48,362 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:42:48,362 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:42:48,681 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:42:48,681 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:42:48,681 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [100456614] [2021-10-07 16:42:48,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [100456614] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:42:48,682 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:42:48,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-07 16:42:48,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879418346] [2021-10-07 16:42:48,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 16:42:48,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:42:48,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 16:42:48,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-10-07 16:42:48,685 INFO L87 Difference]: Start difference. First operand 164 states and 485 transitions. Second operand has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:42:49,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:42:49,366 INFO L93 Difference]: Finished difference Result 234 states and 604 transitions. [2021-10-07 16:42:49,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-07 16:42:49,367 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.9285714285714286) 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 16 [2021-10-07 16:42:49,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:42:49,369 INFO L225 Difference]: With dead ends: 234 [2021-10-07 16:42:49,369 INFO L226 Difference]: Without dead ends: 234 [2021-10-07 16:42:49,370 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 742.8ms TimeCoverageRelationStatistics Valid=119, Invalid=343, Unknown=0, NotChecked=0, Total=462 [2021-10-07 16:42:49,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2021-10-07 16:42:49,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 146. [2021-10-07 16:42:49,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 145 states have (on average 2.8551724137931034) internal successors, (414), 145 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:42:49,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 414 transitions. [2021-10-07 16:42:49,378 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 414 transitions. Word has length 16 [2021-10-07 16:42:49,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:42:49,378 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 414 transitions. [2021-10-07 16:42:49,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:42:49,379 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 414 transitions. [2021-10-07 16:42:49,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 16:42:49,382 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:42:49,383 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:42:49,396 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-10-07 16:42:49,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:42:49,596 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:42:49,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:42:49,596 INFO L82 PathProgramCache]: Analyzing trace with hash -239816297, now seen corresponding path program 14 times [2021-10-07 16:42:49,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:42:49,597 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [657232305] [2021-10-07 16:42:49,597 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 16:42:49,598 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:42:49,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:42:49,599 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:42:49,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-07 16:42:49,785 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 16:42:49,786 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:42:49,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-07 16:42:49,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:42:50,069 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:42:50,069 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:42:50,402 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:42:50,403 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:42:50,403 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [657232305] [2021-10-07 16:42:50,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [657232305] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:42:50,403 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:42:50,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-07 16:42:50,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462961120] [2021-10-07 16:42:50,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 16:42:50,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:42:50,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 16:42:50,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-10-07 16:42:50,404 INFO L87 Difference]: Start difference. First operand 146 states and 414 transitions. Second operand has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:42:51,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:42:51,951 INFO L93 Difference]: Finished difference Result 338 states and 884 transitions. [2021-10-07 16:42:51,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-07 16:42:51,952 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.9285714285714286) 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 16 [2021-10-07 16:42:51,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:42:51,955 INFO L225 Difference]: With dead ends: 338 [2021-10-07 16:42:51,955 INFO L226 Difference]: Without dead ends: 328 [2021-10-07 16:42:51,956 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 1499.2ms TimeCoverageRelationStatistics Valid=280, Invalid=712, Unknown=0, NotChecked=0, Total=992 [2021-10-07 16:42:51,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2021-10-07 16:42:51,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 190. [2021-10-07 16:42:51,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 189 states have (on average 3.0899470899470898) internal successors, (584), 189 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:42:51,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 584 transitions. [2021-10-07 16:42:51,967 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 584 transitions. Word has length 16 [2021-10-07 16:42:51,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:42:51,967 INFO L470 AbstractCegarLoop]: Abstraction has 190 states and 584 transitions. [2021-10-07 16:42:51,967 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:42:51,968 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 584 transitions. [2021-10-07 16:42:51,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 16:42:51,969 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:42:51,969 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:42:51,981 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-10-07 16:42:52,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:42:52,182 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:42:52,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:42:52,182 INFO L82 PathProgramCache]: Analyzing trace with hash -811271103, now seen corresponding path program 15 times [2021-10-07 16:42:52,183 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:42:52,183 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1213366753] [2021-10-07 16:42:52,184 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 16:42:52,184 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:42:52,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:42:52,186 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:42:52,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-10-07 16:42:52,378 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 16:42:52,379 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:42:52,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-07 16:42:52,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:42:52,690 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 16:42:52,691 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:42:52,851 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-07 16:42:52,852 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:42:52,852 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1213366753] [2021-10-07 16:42:52,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1213366753] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-07 16:42:52,852 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 16:42:52,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 10 [2021-10-07 16:42:52,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611138725] [2021-10-07 16:42:52,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 16:42:52,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:42:52,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 16:42:52,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2021-10-07 16:42:52,854 INFO L87 Difference]: Start difference. First operand 190 states and 584 transitions. Second operand has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:42:52,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:42:52,911 INFO L93 Difference]: Finished difference Result 241 states and 687 transitions. [2021-10-07 16:42:52,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-07 16:42:52,911 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-07 16:42:52,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:42:52,914 INFO L225 Difference]: With dead ends: 241 [2021-10-07 16:42:52,914 INFO L226 Difference]: Without dead ends: 220 [2021-10-07 16:42:52,914 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 198.9ms TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2021-10-07 16:42:52,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2021-10-07 16:42:52,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 122. [2021-10-07 16:42:52,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 121 states have (on average 2.644628099173554) internal successors, (320), 121 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:42:52,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 320 transitions. [2021-10-07 16:42:52,921 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 320 transitions. Word has length 16 [2021-10-07 16:42:52,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:42:52,922 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 320 transitions. [2021-10-07 16:42:52,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:42:52,922 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 320 transitions. [2021-10-07 16:42:52,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 16:42:52,923 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:42:52,923 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:42:52,938 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-10-07 16:42:53,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:42:53,124 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:42:53,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:42:53,125 INFO L82 PathProgramCache]: Analyzing trace with hash -330545567, now seen corresponding path program 16 times [2021-10-07 16:42:53,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:42:53,126 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1788874210] [2021-10-07 16:42:53,126 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 16:42:53,126 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:42:53,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:42:53,127 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:42:53,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-10-07 16:42:53,305 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 16:42:53,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:42:53,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-07 16:42:53,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:42:53,589 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:42:53,590 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:42:53,898 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:42:53,899 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:42:53,899 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1788874210] [2021-10-07 16:42:53,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1788874210] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:42:53,899 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:42:53,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-07 16:42:53,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715730779] [2021-10-07 16:42:53,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 16:42:53,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:42:53,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 16:42:53,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2021-10-07 16:42:53,902 INFO L87 Difference]: Start difference. First operand 122 states and 320 transitions. Second operand has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:42:55,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:42:55,281 INFO L93 Difference]: Finished difference Result 258 states and 624 transitions. [2021-10-07 16:42:55,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-07 16:42:55,281 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.9285714285714286) 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 16 [2021-10-07 16:42:55,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:42:55,284 INFO L225 Difference]: With dead ends: 258 [2021-10-07 16:42:55,284 INFO L226 Difference]: Without dead ends: 250 [2021-10-07 16:42:55,285 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 1371.9ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-10-07 16:42:55,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-10-07 16:42:55,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 140. [2021-10-07 16:42:55,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 139 states have (on average 2.7697841726618706) internal successors, (385), 139 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:42:55,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 385 transitions. [2021-10-07 16:42:55,292 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 385 transitions. Word has length 16 [2021-10-07 16:42:55,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:42:55,293 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 385 transitions. [2021-10-07 16:42:55,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:42:55,293 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 385 transitions. [2021-10-07 16:42:55,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 16:42:55,294 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:42:55,294 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:42:55,306 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-10-07 16:42:55,506 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:42:55,507 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:42:55,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:42:55,507 INFO L82 PathProgramCache]: Analyzing trace with hash 528328963, now seen corresponding path program 17 times [2021-10-07 16:42:55,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:42:55,508 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1773750152] [2021-10-07 16:42:55,508 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 16:42:55,509 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:42:55,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:42:55,510 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:42:55,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-10-07 16:42:55,698 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-07 16:42:55,698 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:42:55,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-07 16:42:55,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:42:55,944 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:42:55,945 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:42:56,267 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:42:56,267 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:42:56,267 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1773750152] [2021-10-07 16:42:56,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1773750152] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:42:56,267 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:42:56,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-07 16:42:56,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267984854] [2021-10-07 16:42:56,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 16:42:56,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:42:56,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 16:42:56,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-10-07 16:42:56,269 INFO L87 Difference]: Start difference. First operand 140 states and 385 transitions. Second operand has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:42:57,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:42:57,797 INFO L93 Difference]: Finished difference Result 226 states and 565 transitions. [2021-10-07 16:42:57,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-07 16:42:57,798 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.9285714285714286) 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 16 [2021-10-07 16:42:57,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:42:57,800 INFO L225 Difference]: With dead ends: 226 [2021-10-07 16:42:57,800 INFO L226 Difference]: Without dead ends: 222 [2021-10-07 16:42:57,800 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 1428.7ms TimeCoverageRelationStatistics Valid=231, Invalid=581, Unknown=0, NotChecked=0, Total=812 [2021-10-07 16:42:57,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2021-10-07 16:42:57,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 138. [2021-10-07 16:42:57,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 137 states have (on average 2.72992700729927) internal successors, (374), 137 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:42:57,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 374 transitions. [2021-10-07 16:42:57,807 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 374 transitions. Word has length 16 [2021-10-07 16:42:57,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:42:57,808 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 374 transitions. [2021-10-07 16:42:57,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:42:57,808 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 374 transitions. [2021-10-07 16:42:57,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 16:42:57,809 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:42:57,809 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:42:57,821 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-10-07 16:42:58,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:42:58,022 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:42:58,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:42:58,023 INFO L82 PathProgramCache]: Analyzing trace with hash 1383635617, now seen corresponding path program 18 times [2021-10-07 16:42:58,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:42:58,023 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1114374826] [2021-10-07 16:42:58,023 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 16:42:58,024 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:42:58,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:42:58,025 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:42:58,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-10-07 16:42:58,233 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-07 16:42:58,233 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:42:58,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-07 16:42:58,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:42:58,457 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:42:58,457 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:42:58,786 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:42:58,786 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:42:58,786 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1114374826] [2021-10-07 16:42:58,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1114374826] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:42:58,786 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:42:58,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-07 16:42:58,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665403902] [2021-10-07 16:42:58,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 16:42:58,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:42:58,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 16:42:58,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-10-07 16:42:58,788 INFO L87 Difference]: Start difference. First operand 138 states and 374 transitions. Second operand has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:42:59,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:42:59,657 INFO L93 Difference]: Finished difference Result 208 states and 514 transitions. [2021-10-07 16:42:59,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-07 16:42:59,658 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.9285714285714286) 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 16 [2021-10-07 16:42:59,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:42:59,659 INFO L225 Difference]: With dead ends: 208 [2021-10-07 16:42:59,659 INFO L226 Difference]: Without dead ends: 200 [2021-10-07 16:42:59,660 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 878.5ms TimeCoverageRelationStatistics Valid=166, Invalid=434, Unknown=0, NotChecked=0, Total=600 [2021-10-07 16:42:59,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-10-07 16:42:59,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 134. [2021-10-07 16:42:59,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 133 states have (on average 2.6766917293233083) internal successors, (356), 133 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:42:59,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 356 transitions. [2021-10-07 16:42:59,666 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 356 transitions. Word has length 16 [2021-10-07 16:42:59,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:42:59,666 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 356 transitions. [2021-10-07 16:42:59,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:42:59,667 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 356 transitions. [2021-10-07 16:42:59,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 16:42:59,667 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:42:59,668 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:42:59,681 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-10-07 16:42:59,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:42:59,880 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:42:59,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:42:59,881 INFO L82 PathProgramCache]: Analyzing trace with hash 1536381851, now seen corresponding path program 19 times [2021-10-07 16:42:59,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:42:59,882 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [631284676] [2021-10-07 16:42:59,883 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 16:42:59,883 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:42:59,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:42:59,884 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:42:59,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-10-07 16:43:00,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:43:00,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-07 16:43:00,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:43:00,346 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:43:00,346 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:43:00,688 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:43:00,688 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:43:00,688 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [631284676] [2021-10-07 16:43:00,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [631284676] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:43:00,689 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:43:00,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-07 16:43:00,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643504456] [2021-10-07 16:43:00,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 16:43:00,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:43:00,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 16:43:00,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-10-07 16:43:00,691 INFO L87 Difference]: Start difference. First operand 134 states and 356 transitions. Second operand has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 13 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:02,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:43:02,031 INFO L93 Difference]: Finished difference Result 288 states and 699 transitions. [2021-10-07 16:43:02,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-07 16:43:02,032 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 13 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 16 [2021-10-07 16:43:02,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:43:02,034 INFO L225 Difference]: With dead ends: 288 [2021-10-07 16:43:02,034 INFO L226 Difference]: Without dead ends: 288 [2021-10-07 16:43:02,035 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 1194.7ms TimeCoverageRelationStatistics Valid=231, Invalid=639, Unknown=0, NotChecked=0, Total=870 [2021-10-07 16:43:02,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2021-10-07 16:43:02,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 148. [2021-10-07 16:43:02,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 147 states have (on average 2.7551020408163267) internal successors, (405), 147 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:02,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 405 transitions. [2021-10-07 16:43:02,043 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 405 transitions. Word has length 16 [2021-10-07 16:43:02,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:43:02,044 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 405 transitions. [2021-10-07 16:43:02,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 13 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:02,044 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 405 transitions. [2021-10-07 16:43:02,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 16:43:02,045 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:43:02,045 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:43:02,060 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-10-07 16:43:02,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:43:02,258 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:43:02,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:43:02,259 INFO L82 PathProgramCache]: Analyzing trace with hash 1941608877, now seen corresponding path program 20 times [2021-10-07 16:43:02,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:43:02,260 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [419591089] [2021-10-07 16:43:02,260 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 16:43:02,260 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:43:02,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:43:02,261 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:43:02,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-10-07 16:43:02,494 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 16:43:02,494 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:43:02,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-07 16:43:02,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:43:02,733 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:43:02,733 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:43:03,057 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:43:03,057 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:43:03,057 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [419591089] [2021-10-07 16:43:03,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [419591089] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:43:03,057 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:43:03,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-07 16:43:03,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527650883] [2021-10-07 16:43:03,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 16:43:03,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:43:03,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 16:43:03,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-10-07 16:43:03,059 INFO L87 Difference]: Start difference. First operand 148 states and 405 transitions. Second operand has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:04,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:43:04,737 INFO L93 Difference]: Finished difference Result 242 states and 605 transitions. [2021-10-07 16:43:04,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-07 16:43:04,738 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.9285714285714286) 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 16 [2021-10-07 16:43:04,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:43:04,740 INFO L225 Difference]: With dead ends: 242 [2021-10-07 16:43:04,740 INFO L226 Difference]: Without dead ends: 224 [2021-10-07 16:43:04,741 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 1463.4ms TimeCoverageRelationStatistics Valid=274, Invalid=782, Unknown=0, NotChecked=0, Total=1056 [2021-10-07 16:43:04,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2021-10-07 16:43:04,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 150. [2021-10-07 16:43:04,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 149 states have (on average 2.6912751677852347) internal successors, (401), 149 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:04,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 401 transitions. [2021-10-07 16:43:04,750 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 401 transitions. Word has length 16 [2021-10-07 16:43:04,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:43:04,750 INFO L470 AbstractCegarLoop]: Abstraction has 150 states and 401 transitions. [2021-10-07 16:43:04,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:04,750 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 401 transitions. [2021-10-07 16:43:04,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 16:43:04,752 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:43:04,753 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:43:04,766 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Ended with exit code 0 [2021-10-07 16:43:04,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:43:04,966 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:43:04,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:43:04,967 INFO L82 PathProgramCache]: Analyzing trace with hash -267526943, now seen corresponding path program 21 times [2021-10-07 16:43:04,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:43:04,968 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [791944861] [2021-10-07 16:43:04,968 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 16:43:04,968 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:43:04,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:43:04,969 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:43:04,970 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-10-07 16:43:05,207 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 16:43:05,208 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:43:05,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-07 16:43:05,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:43:05,542 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 16:43:05,543 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:43:05,753 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-07 16:43:05,754 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:43:05,754 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [791944861] [2021-10-07 16:43:05,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [791944861] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-07 16:43:05,754 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 16:43:05,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 11 [2021-10-07 16:43:05,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871913821] [2021-10-07 16:43:05,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 16:43:05,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:43:05,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 16:43:05,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2021-10-07 16:43:05,756 INFO L87 Difference]: Start difference. First operand 150 states and 401 transitions. Second operand has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:05,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:43:05,855 INFO L93 Difference]: Finished difference Result 251 states and 624 transitions. [2021-10-07 16:43:05,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-07 16:43:05,856 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-07 16:43:05,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:43:05,858 INFO L225 Difference]: With dead ends: 251 [2021-10-07 16:43:05,858 INFO L226 Difference]: Without dead ends: 210 [2021-10-07 16:43:05,860 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 220.3ms TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2021-10-07 16:43:05,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2021-10-07 16:43:05,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 180. [2021-10-07 16:43:05,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 179 states have (on average 2.5195530726256985) internal successors, (451), 179 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:05,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 451 transitions. [2021-10-07 16:43:05,867 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 451 transitions. Word has length 16 [2021-10-07 16:43:05,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:43:05,869 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 451 transitions. [2021-10-07 16:43:05,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:05,869 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 451 transitions. [2021-10-07 16:43:05,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 16:43:05,870 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:43:05,871 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:43:05,884 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-10-07 16:43:06,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:43:06,084 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:43:06,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:43:06,085 INFO L82 PathProgramCache]: Analyzing trace with hash 61135057, now seen corresponding path program 22 times [2021-10-07 16:43:06,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:43:06,085 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1257306899] [2021-10-07 16:43:06,086 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 16:43:06,086 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:43:06,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:43:06,087 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:43:06,089 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-10-07 16:43:06,337 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 16:43:06,338 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:43:06,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-07 16:43:06,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:43:06,615 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:43:06,616 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:43:06,902 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:43:06,903 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:43:06,903 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1257306899] [2021-10-07 16:43:06,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1257306899] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:43:06,903 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:43:06,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-07 16:43:06,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769519729] [2021-10-07 16:43:06,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 16:43:06,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:43:06,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 16:43:06,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-10-07 16:43:06,905 INFO L87 Difference]: Start difference. First operand 180 states and 451 transitions. Second operand has 14 states, 14 states have (on average 2.0) internal successors, (28), 13 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:08,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:43:08,379 INFO L93 Difference]: Finished difference Result 356 states and 853 transitions. [2021-10-07 16:43:08,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-07 16:43:08,380 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0) 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 16 [2021-10-07 16:43:08,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:43:08,383 INFO L225 Difference]: With dead ends: 356 [2021-10-07 16:43:08,383 INFO L226 Difference]: Without dead ends: 350 [2021-10-07 16:43:08,383 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 1362.8ms TimeCoverageRelationStatistics Valid=240, Invalid=630, Unknown=0, NotChecked=0, Total=870 [2021-10-07 16:43:08,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2021-10-07 16:43:08,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 204. [2021-10-07 16:43:08,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 203 states have (on average 2.5566502463054186) internal successors, (519), 203 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:08,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 519 transitions. [2021-10-07 16:43:08,392 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 519 transitions. Word has length 16 [2021-10-07 16:43:08,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:43:08,393 INFO L470 AbstractCegarLoop]: Abstraction has 204 states and 519 transitions. [2021-10-07 16:43:08,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 13 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:08,393 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 519 transitions. [2021-10-07 16:43:08,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 16:43:08,394 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:43:08,394 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:43:08,407 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Ended with exit code 0 [2021-10-07 16:43:08,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:43:08,607 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:43:08,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:43:08,608 INFO L82 PathProgramCache]: Analyzing trace with hash -2103610557, now seen corresponding path program 23 times [2021-10-07 16:43:08,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:43:08,609 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [976664291] [2021-10-07 16:43:08,609 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 16:43:08,610 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:43:08,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:43:08,611 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:43:08,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-10-07 16:43:08,860 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-07 16:43:08,860 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:43:08,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-07 16:43:08,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:43:09,059 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:43:09,060 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:43:09,347 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:43:09,347 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:43:09,348 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [976664291] [2021-10-07 16:43:09,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [976664291] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:43:09,348 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:43:09,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-07 16:43:09,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884620982] [2021-10-07 16:43:09,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 16:43:09,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:43:09,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 16:43:09,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-10-07 16:43:09,351 INFO L87 Difference]: Start difference. First operand 204 states and 519 transitions. Second operand has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:10,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:43:10,095 INFO L93 Difference]: Finished difference Result 302 states and 720 transitions. [2021-10-07 16:43:10,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-07 16:43:10,096 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.9285714285714286) 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 16 [2021-10-07 16:43:10,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:43:10,098 INFO L225 Difference]: With dead ends: 302 [2021-10-07 16:43:10,099 INFO L226 Difference]: Without dead ends: 276 [2021-10-07 16:43:10,099 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 766.3ms TimeCoverageRelationStatistics Valid=177, Invalid=473, Unknown=0, NotChecked=0, Total=650 [2021-10-07 16:43:10,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2021-10-07 16:43:10,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 210. [2021-10-07 16:43:10,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 209 states have (on average 2.54066985645933) internal successors, (531), 209 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:10,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 531 transitions. [2021-10-07 16:43:10,107 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 531 transitions. Word has length 16 [2021-10-07 16:43:10,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:43:10,107 INFO L470 AbstractCegarLoop]: Abstraction has 210 states and 531 transitions. [2021-10-07 16:43:10,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:10,108 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 531 transitions. [2021-10-07 16:43:10,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 16:43:10,108 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:43:10,109 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:43:10,123 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2021-10-07 16:43:10,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:43:10,321 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:43:10,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:43:10,322 INFO L82 PathProgramCache]: Analyzing trace with hash 2101310167, now seen corresponding path program 24 times [2021-10-07 16:43:10,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:43:10,323 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [919325063] [2021-10-07 16:43:10,323 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 16:43:10,324 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:43:10,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:43:10,325 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:43:10,326 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-10-07 16:43:10,570 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-07 16:43:10,570 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:43:10,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-07 16:43:10,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:43:10,778 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:43:10,779 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:43:11,104 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:43:11,104 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:43:11,104 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [919325063] [2021-10-07 16:43:11,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [919325063] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:43:11,104 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:43:11,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-07 16:43:11,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310986622] [2021-10-07 16:43:11,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 16:43:11,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:43:11,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 16:43:11,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-10-07 16:43:11,106 INFO L87 Difference]: Start difference. First operand 210 states and 531 transitions. Second operand has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:11,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:43:11,444 INFO L93 Difference]: Finished difference Result 256 states and 637 transitions. [2021-10-07 16:43:11,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-07 16:43:11,445 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.9285714285714286) 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 16 [2021-10-07 16:43:11,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:43:11,446 INFO L225 Difference]: With dead ends: 256 [2021-10-07 16:43:11,446 INFO L226 Difference]: Without dead ends: 256 [2021-10-07 16:43:11,447 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 431.0ms TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2021-10-07 16:43:11,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2021-10-07 16:43:11,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 204. [2021-10-07 16:43:11,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 203 states have (on average 2.5270935960591134) internal successors, (513), 203 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:11,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 513 transitions. [2021-10-07 16:43:11,454 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 513 transitions. Word has length 16 [2021-10-07 16:43:11,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:43:11,454 INFO L470 AbstractCegarLoop]: Abstraction has 204 states and 513 transitions. [2021-10-07 16:43:11,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:11,454 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 513 transitions. [2021-10-07 16:43:11,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 16:43:11,455 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:43:11,455 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:43:11,470 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2021-10-07 16:43:11,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:43:11,668 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:43:11,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:43:11,669 INFO L82 PathProgramCache]: Analyzing trace with hash -1512867017, now seen corresponding path program 25 times [2021-10-07 16:43:11,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:43:11,670 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1405402121] [2021-10-07 16:43:11,670 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 16:43:11,670 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:43:11,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:43:11,671 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:43:11,706 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-10-07 16:43:11,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:43:11,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 16:43:11,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:43:12,176 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:43:12,177 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:43:12,322 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 16:43:12,323 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:43:12,323 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1405402121] [2021-10-07 16:43:12,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1405402121] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:43:12,323 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:43:12,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4] total 11 [2021-10-07 16:43:12,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750158951] [2021-10-07 16:43:12,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 16:43:12,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:43:12,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 16:43:12,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-10-07 16:43:12,326 INFO L87 Difference]: Start difference. First operand 204 states and 513 transitions. Second operand has 13 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:12,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:43:12,743 INFO L93 Difference]: Finished difference Result 289 states and 699 transitions. [2021-10-07 16:43:12,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-07 16:43:12,744 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 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 17 [2021-10-07 16:43:12,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:43:12,746 INFO L225 Difference]: With dead ends: 289 [2021-10-07 16:43:12,746 INFO L226 Difference]: Without dead ends: 282 [2021-10-07 16:43:12,747 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 285.7ms TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2021-10-07 16:43:12,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2021-10-07 16:43:12,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 242. [2021-10-07 16:43:12,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 241 states have (on average 2.5726141078838176) internal successors, (620), 241 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:12,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 620 transitions. [2021-10-07 16:43:12,768 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 620 transitions. Word has length 17 [2021-10-07 16:43:12,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:43:12,769 INFO L470 AbstractCegarLoop]: Abstraction has 242 states and 620 transitions. [2021-10-07 16:43:12,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:12,769 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 620 transitions. [2021-10-07 16:43:12,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 16:43:12,770 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:43:12,770 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:43:12,786 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Ended with exit code 0 [2021-10-07 16:43:12,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:43:12,983 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:43:12,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:43:12,984 INFO L82 PathProgramCache]: Analyzing trace with hash 901626459, now seen corresponding path program 26 times [2021-10-07 16:43:12,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:43:12,984 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1109206604] [2021-10-07 16:43:12,984 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 16:43:12,985 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:43:12,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:43:12,986 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:43:12,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-10-07 16:43:13,254 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 16:43:13,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:43:13,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 16:43:13,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:43:13,484 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:43:13,485 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:43:13,627 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-07 16:43:13,627 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:43:13,627 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1109206604] [2021-10-07 16:43:13,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1109206604] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:43:13,628 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:43:13,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4] total 11 [2021-10-07 16:43:13,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886735393] [2021-10-07 16:43:13,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 16:43:13,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:43:13,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 16:43:13,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-10-07 16:43:13,630 INFO L87 Difference]: Start difference. First operand 242 states and 620 transitions. Second operand has 13 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:14,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:43:14,109 INFO L93 Difference]: Finished difference Result 361 states and 909 transitions. [2021-10-07 16:43:14,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-07 16:43:14,110 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 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 17 [2021-10-07 16:43:14,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:43:14,112 INFO L225 Difference]: With dead ends: 361 [2021-10-07 16:43:14,112 INFO L226 Difference]: Without dead ends: 354 [2021-10-07 16:43:14,112 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 282.7ms TimeCoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2021-10-07 16:43:14,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2021-10-07 16:43:14,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 304. [2021-10-07 16:43:14,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 303 states have (on average 2.6435643564356437) internal successors, (801), 303 states have internal predecessors, (801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:14,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 801 transitions. [2021-10-07 16:43:14,123 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 801 transitions. Word has length 17 [2021-10-07 16:43:14,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:43:14,123 INFO L470 AbstractCegarLoop]: Abstraction has 304 states and 801 transitions. [2021-10-07 16:43:14,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:14,123 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 801 transitions. [2021-10-07 16:43:14,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 16:43:14,124 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:43:14,125 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:43:14,137 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2021-10-07 16:43:14,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:43:14,338 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:43:14,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:43:14,339 INFO L82 PathProgramCache]: Analyzing trace with hash 1137892775, now seen corresponding path program 27 times [2021-10-07 16:43:14,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:43:14,340 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1264464861] [2021-10-07 16:43:14,340 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 16:43:14,340 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:43:14,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:43:14,341 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:43:14,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2021-10-07 16:43:14,596 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 16:43:14,596 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:43:14,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 16:43:14,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:43:14,785 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-07 16:43:14,785 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:43:14,951 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-07 16:43:14,951 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:43:14,951 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1264464861] [2021-10-07 16:43:14,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1264464861] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-07 16:43:14,952 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 16:43:14,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2021-10-07 16:43:14,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024147822] [2021-10-07 16:43:14,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-07 16:43:14,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:43:14,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-07 16:43:14,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-10-07 16:43:14,953 INFO L87 Difference]: Start difference. First operand 304 states and 801 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:15,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:43:15,020 INFO L93 Difference]: Finished difference Result 357 states and 919 transitions. [2021-10-07 16:43:15,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-07 16:43:15,020 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-07 16:43:15,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:43:15,022 INFO L225 Difference]: With dead ends: 357 [2021-10-07 16:43:15,022 INFO L226 Difference]: Without dead ends: 190 [2021-10-07 16:43:15,022 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 131.5ms TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-10-07 16:43:15,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2021-10-07 16:43:15,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 150. [2021-10-07 16:43:15,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 149 states have (on average 2.120805369127517) internal successors, (316), 149 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:15,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 316 transitions. [2021-10-07 16:43:15,027 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 316 transitions. Word has length 17 [2021-10-07 16:43:15,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:43:15,028 INFO L470 AbstractCegarLoop]: Abstraction has 150 states and 316 transitions. [2021-10-07 16:43:15,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:15,028 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 316 transitions. [2021-10-07 16:43:15,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 16:43:15,029 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:43:15,029 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:43:15,046 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2021-10-07 16:43:15,242 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:43:15,242 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:43:15,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:43:15,243 INFO L82 PathProgramCache]: Analyzing trace with hash -1771555337, now seen corresponding path program 28 times [2021-10-07 16:43:15,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:43:15,244 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [365562152] [2021-10-07 16:43:15,245 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 16:43:15,245 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:43:15,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:43:15,246 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:43:15,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2021-10-07 16:43:15,541 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 16:43:15,541 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:43:15,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 16:43:15,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:43:15,793 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:43:15,793 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:43:15,937 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 16:43:15,937 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:43:15,937 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [365562152] [2021-10-07 16:43:15,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [365562152] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:43:15,938 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:43:15,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4] total 11 [2021-10-07 16:43:15,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089073666] [2021-10-07 16:43:15,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 16:43:15,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:43:15,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 16:43:15,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-10-07 16:43:15,939 INFO L87 Difference]: Start difference. First operand 150 states and 316 transitions. Second operand has 13 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:16,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:43:16,246 INFO L93 Difference]: Finished difference Result 205 states and 409 transitions. [2021-10-07 16:43:16,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-07 16:43:16,247 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 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 17 [2021-10-07 16:43:16,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:43:16,248 INFO L225 Difference]: With dead ends: 205 [2021-10-07 16:43:16,248 INFO L226 Difference]: Without dead ends: 200 [2021-10-07 16:43:16,249 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 304.1ms TimeCoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2021-10-07 16:43:16,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-10-07 16:43:16,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 162. [2021-10-07 16:43:16,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 161 states have (on average 2.130434782608696) internal successors, (343), 161 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:16,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 343 transitions. [2021-10-07 16:43:16,253 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 343 transitions. Word has length 17 [2021-10-07 16:43:16,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:43:16,253 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 343 transitions. [2021-10-07 16:43:16,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:16,253 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 343 transitions. [2021-10-07 16:43:16,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 16:43:16,254 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:43:16,254 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:43:16,264 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Ended with exit code 0 [2021-10-07 16:43:16,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:43:16,456 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:43:16,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:43:16,463 INFO L82 PathProgramCache]: Analyzing trace with hash -738370703, now seen corresponding path program 29 times [2021-10-07 16:43:16,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:43:16,463 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2138209729] [2021-10-07 16:43:16,464 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 16:43:16,464 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:43:16,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:43:16,465 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:43:16,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2021-10-07 16:43:16,762 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-07 16:43:16,763 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:43:16,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-07 16:43:16,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:43:17,039 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 16:43:17,040 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:43:17,348 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 16:43:17,348 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:43:17,348 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2138209729] [2021-10-07 16:43:17,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2138209729] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:43:17,348 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:43:17,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-07 16:43:17,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224747424] [2021-10-07 16:43:17,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 16:43:17,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:43:17,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 16:43:17,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2021-10-07 16:43:17,350 INFO L87 Difference]: Start difference. First operand 162 states and 343 transitions. Second operand has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:18,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:43:18,173 INFO L93 Difference]: Finished difference Result 230 states and 467 transitions. [2021-10-07 16:43:18,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-07 16:43:18,173 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-07 16:43:18,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:43:18,175 INFO L225 Difference]: With dead ends: 230 [2021-10-07 16:43:18,175 INFO L226 Difference]: Without dead ends: 230 [2021-10-07 16:43:18,175 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 802.1ms TimeCoverageRelationStatistics Valid=161, Invalid=391, Unknown=0, NotChecked=0, Total=552 [2021-10-07 16:43:18,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2021-10-07 16:43:18,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 162. [2021-10-07 16:43:18,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 161 states have (on average 2.1055900621118013) internal successors, (339), 161 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:18,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 339 transitions. [2021-10-07 16:43:18,180 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 339 transitions. Word has length 17 [2021-10-07 16:43:18,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:43:18,181 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 339 transitions. [2021-10-07 16:43:18,181 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:18,181 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 339 transitions. [2021-10-07 16:43:18,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 16:43:18,181 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:43:18,182 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:43:18,196 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Ended with exit code 0 [2021-10-07 16:43:18,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:43:18,392 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:43:18,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:43:18,393 INFO L82 PathProgramCache]: Analyzing trace with hash 2002435661, now seen corresponding path program 30 times [2021-10-07 16:43:18,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:43:18,394 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [136073357] [2021-10-07 16:43:18,394 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 16:43:18,394 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:43:18,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:43:18,396 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:43:18,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2021-10-07 16:43:18,717 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-07 16:43:18,718 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:43:18,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 16:43:18,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:43:18,985 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:43:18,985 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:43:19,139 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:43:19,139 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:43:19,139 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [136073357] [2021-10-07 16:43:19,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [136073357] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:43:19,140 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:43:19,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4] total 11 [2021-10-07 16:43:19,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339096321] [2021-10-07 16:43:19,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 16:43:19,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:43:19,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 16:43:19,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-10-07 16:43:19,142 INFO L87 Difference]: Start difference. First operand 162 states and 339 transitions. Second operand has 13 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:19,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:43:19,400 INFO L93 Difference]: Finished difference Result 189 states and 388 transitions. [2021-10-07 16:43:19,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-07 16:43:19,401 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 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 17 [2021-10-07 16:43:19,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:43:19,402 INFO L225 Difference]: With dead ends: 189 [2021-10-07 16:43:19,402 INFO L226 Difference]: Without dead ends: 184 [2021-10-07 16:43:19,402 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 304.6ms TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2021-10-07 16:43:19,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-10-07 16:43:19,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 172. [2021-10-07 16:43:19,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 171 states have (on average 2.0994152046783627) internal successors, (359), 171 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:19,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 359 transitions. [2021-10-07 16:43:19,408 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 359 transitions. Word has length 17 [2021-10-07 16:43:19,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:43:19,408 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 359 transitions. [2021-10-07 16:43:19,408 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:19,408 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 359 transitions. [2021-10-07 16:43:19,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 16:43:19,409 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:43:19,409 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:43:19,425 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2021-10-07 16:43:19,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:43:19,622 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:43:19,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:43:19,623 INFO L82 PathProgramCache]: Analyzing trace with hash -1314035097, now seen corresponding path program 31 times [2021-10-07 16:43:19,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:43:19,624 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [682500254] [2021-10-07 16:43:19,624 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 16:43:19,624 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:43:19,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:43:19,626 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:43:19,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2021-10-07 16:43:19,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:43:19,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-07 16:43:19,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:43:20,279 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:43:20,279 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:43:20,732 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:43:20,732 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:43:20,733 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [682500254] [2021-10-07 16:43:20,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [682500254] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:43:20,733 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:43:20,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-07 16:43:20,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41314945] [2021-10-07 16:43:20,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-07 16:43:20,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:43:20,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-07 16:43:20,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2021-10-07 16:43:20,734 INFO L87 Difference]: Start difference. First operand 172 states and 359 transitions. Second operand has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:21,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:43:21,208 INFO L93 Difference]: Finished difference Result 210 states and 421 transitions. [2021-10-07 16:43:21,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-07 16:43:21,208 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-07 16:43:21,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:43:21,210 INFO L225 Difference]: With dead ends: 210 [2021-10-07 16:43:21,210 INFO L226 Difference]: Without dead ends: 208 [2021-10-07 16:43:21,210 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 680.1ms TimeCoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506 [2021-10-07 16:43:21,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-10-07 16:43:21,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 170. [2021-10-07 16:43:21,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 169 states have (on average 2.0828402366863905) internal successors, (352), 169 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:21,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 352 transitions. [2021-10-07 16:43:21,215 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 352 transitions. Word has length 18 [2021-10-07 16:43:21,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:43:21,216 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 352 transitions. [2021-10-07 16:43:21,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:21,216 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 352 transitions. [2021-10-07 16:43:21,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 16:43:21,217 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:43:21,217 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:43:21,237 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2021-10-07 16:43:21,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:43:21,430 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:43:21,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:43:21,431 INFO L82 PathProgramCache]: Analyzing trace with hash 1801851169, now seen corresponding path program 32 times [2021-10-07 16:43:21,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:43:21,432 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1901194163] [2021-10-07 16:43:21,432 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 16:43:21,432 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:43:21,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:43:21,433 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:43:21,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2021-10-07 16:43:21,764 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 16:43:21,764 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:43:21,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-07 16:43:21,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:43:22,235 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:43:22,236 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:43:22,678 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:43:22,678 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:43:22,678 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1901194163] [2021-10-07 16:43:22,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1901194163] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:43:22,679 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:43:22,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-07 16:43:22,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758423641] [2021-10-07 16:43:22,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-07 16:43:22,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:43:22,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-07 16:43:22,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2021-10-07 16:43:22,681 INFO L87 Difference]: Start difference. First operand 170 states and 352 transitions. Second operand has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:24,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:43:24,826 INFO L93 Difference]: Finished difference Result 294 states and 581 transitions. [2021-10-07 16:43:24,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-07 16:43:24,826 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 17 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 18 [2021-10-07 16:43:24,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:43:24,828 INFO L225 Difference]: With dead ends: 294 [2021-10-07 16:43:24,828 INFO L226 Difference]: Without dead ends: 294 [2021-10-07 16:43:24,828 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 2086.2ms TimeCoverageRelationStatistics Valid=380, Invalid=1026, Unknown=0, NotChecked=0, Total=1406 [2021-10-07 16:43:24,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2021-10-07 16:43:24,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 166. [2021-10-07 16:43:24,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 165 states have (on average 2.084848484848485) internal successors, (344), 165 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:24,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 344 transitions. [2021-10-07 16:43:24,833 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 344 transitions. Word has length 18 [2021-10-07 16:43:24,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:43:24,833 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 344 transitions. [2021-10-07 16:43:24,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:24,834 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 344 transitions. [2021-10-07 16:43:24,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 16:43:24,834 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:43:24,835 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:43:24,846 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2021-10-07 16:43:25,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:43:25,038 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:43:25,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:43:25,039 INFO L82 PathProgramCache]: Analyzing trace with hash -1572723417, now seen corresponding path program 33 times [2021-10-07 16:43:25,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:43:25,040 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [754892391] [2021-10-07 16:43:25,040 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 16:43:25,040 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:43:25,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:43:25,041 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:43:25,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2021-10-07 16:43:25,398 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-07 16:43:25,398 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:43:25,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-07 16:43:25,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:43:25,958 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 16:43:25,959 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:43:26,216 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-07 16:43:26,216 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:43:26,216 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [754892391] [2021-10-07 16:43:26,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [754892391] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:43:26,216 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:43:26,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 14 [2021-10-07 16:43:26,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220101259] [2021-10-07 16:43:26,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-07 16:43:26,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:43:26,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-07 16:43:26,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2021-10-07 16:43:26,218 INFO L87 Difference]: Start difference. First operand 166 states and 344 transitions. Second operand has 15 states, 14 states have (on average 2.357142857142857) internal successors, (33), 15 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:27,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:43:27,191 INFO L93 Difference]: Finished difference Result 291 states and 582 transitions. [2021-10-07 16:43:27,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-07 16:43:27,192 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.357142857142857) internal successors, (33), 15 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 18 [2021-10-07 16:43:27,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:43:27,193 INFO L225 Difference]: With dead ends: 291 [2021-10-07 16:43:27,193 INFO L226 Difference]: Without dead ends: 138 [2021-10-07 16:43:27,193 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 1064.9ms TimeCoverageRelationStatistics Valid=235, Invalid=577, Unknown=0, NotChecked=0, Total=812 [2021-10-07 16:43:27,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-10-07 16:43:27,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 78. [2021-10-07 16:43:27,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.844155844155844) internal successors, (142), 77 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:27,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 142 transitions. [2021-10-07 16:43:27,197 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 142 transitions. Word has length 18 [2021-10-07 16:43:27,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:43:27,197 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 142 transitions. [2021-10-07 16:43:27,197 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.357142857142857) internal successors, (33), 15 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:27,197 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 142 transitions. [2021-10-07 16:43:27,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 16:43:27,198 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:43:27,198 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:43:27,212 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2021-10-07 16:43:27,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:43:27,411 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:43:27,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:43:27,412 INFO L82 PathProgramCache]: Analyzing trace with hash -2093699715, now seen corresponding path program 34 times [2021-10-07 16:43:27,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:43:27,413 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [697168850] [2021-10-07 16:43:27,413 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 16:43:27,413 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:43:27,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:43:27,414 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:43:27,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2021-10-07 16:43:27,743 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 16:43:27,744 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:43:27,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-07 16:43:27,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:43:28,088 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:43:28,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:43:28,591 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:43:28,591 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:43:28,591 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [697168850] [2021-10-07 16:43:28,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [697168850] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:43:28,591 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:43:28,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-07 16:43:28,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653242016] [2021-10-07 16:43:28,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-07 16:43:28,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:43:28,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-07 16:43:28,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2021-10-07 16:43:28,594 INFO L87 Difference]: Start difference. First operand 78 states and 142 transitions. Second operand has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:29,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:43:29,468 INFO L93 Difference]: Finished difference Result 94 states and 167 transitions. [2021-10-07 16:43:29,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-07 16:43:29,469 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-07 16:43:29,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:43:29,469 INFO L225 Difference]: With dead ends: 94 [2021-10-07 16:43:29,469 INFO L226 Difference]: Without dead ends: 82 [2021-10-07 16:43:29,470 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1127.1ms TimeCoverageRelationStatistics Valid=183, Invalid=467, Unknown=0, NotChecked=0, Total=650 [2021-10-07 16:43:29,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-10-07 16:43:29,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 80. [2021-10-07 16:43:29,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.8354430379746836) internal successors, (145), 79 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:29,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 145 transitions. [2021-10-07 16:43:29,472 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 145 transitions. Word has length 18 [2021-10-07 16:43:29,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:43:29,473 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 145 transitions. [2021-10-07 16:43:29,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:29,473 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 145 transitions. [2021-10-07 16:43:29,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 16:43:29,474 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:43:29,474 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:43:29,487 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Ended with exit code 0 [2021-10-07 16:43:29,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:43:29,687 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:43:29,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:43:29,688 INFO L82 PathProgramCache]: Analyzing trace with hash -1064095769, now seen corresponding path program 35 times [2021-10-07 16:43:29,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:43:29,689 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [261465843] [2021-10-07 16:43:29,689 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 16:43:29,689 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:43:29,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:43:29,691 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:43:29,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2021-10-07 16:43:30,038 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-07 16:43:30,038 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:43:30,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-07 16:43:30,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:43:30,345 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:43:30,345 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:43:30,828 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:43:30,829 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:43:30,829 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [261465843] [2021-10-07 16:43:30,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [261465843] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:43:30,829 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:43:30,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-07 16:43:30,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342304889] [2021-10-07 16:43:30,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-07 16:43:30,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:43:30,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-07 16:43:30,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2021-10-07 16:43:30,831 INFO L87 Difference]: Start difference. First operand 80 states and 145 transitions. Second operand has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:31,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:43:31,720 INFO L93 Difference]: Finished difference Result 92 states and 162 transitions. [2021-10-07 16:43:31,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-07 16:43:31,721 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-07 16:43:31,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:43:31,722 INFO L225 Difference]: With dead ends: 92 [2021-10-07 16:43:31,722 INFO L226 Difference]: Without dead ends: 74 [2021-10-07 16:43:31,723 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1140.7ms TimeCoverageRelationStatistics Valid=199, Invalid=557, Unknown=0, NotChecked=0, Total=756 [2021-10-07 16:43:31,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-10-07 16:43:31,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 68. [2021-10-07 16:43:31,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.835820895522388) internal successors, (123), 67 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:31,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 123 transitions. [2021-10-07 16:43:31,726 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 123 transitions. Word has length 18 [2021-10-07 16:43:31,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:43:31,726 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 123 transitions. [2021-10-07 16:43:31,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:31,726 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 123 transitions. [2021-10-07 16:43:31,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 16:43:31,726 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:43:31,727 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:43:31,737 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Ended with exit code 0 [2021-10-07 16:43:31,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:43:31,928 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:43:31,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:43:31,928 INFO L82 PathProgramCache]: Analyzing trace with hash 440849539, now seen corresponding path program 36 times [2021-10-07 16:43:31,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:43:31,929 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [38644947] [2021-10-07 16:43:31,929 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 16:43:31,929 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:43:31,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:43:31,931 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:43:31,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2021-10-07 16:43:32,305 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-07 16:43:32,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:43:32,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-07 16:43:32,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:43:32,683 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:43:32,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:43:33,141 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:43:33,141 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:43:33,141 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [38644947] [2021-10-07 16:43:33,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [38644947] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:43:33,141 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:43:33,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-07 16:43:33,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260394907] [2021-10-07 16:43:33,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-07 16:43:33,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:43:33,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-07 16:43:33,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2021-10-07 16:43:33,143 INFO L87 Difference]: Start difference. First operand 68 states and 123 transitions. Second operand has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:33,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:43:33,384 INFO L93 Difference]: Finished difference Result 98 states and 170 transitions. [2021-10-07 16:43:33,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-07 16:43:33,385 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 17 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 18 [2021-10-07 16:43:33,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:43:33,386 INFO L225 Difference]: With dead ends: 98 [2021-10-07 16:43:33,386 INFO L226 Difference]: Without dead ends: 98 [2021-10-07 16:43:33,387 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 535.0ms TimeCoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2021-10-07 16:43:33,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-10-07 16:43:33,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 80. [2021-10-07 16:43:33,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.8227848101265822) internal successors, (144), 79 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:33,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 144 transitions. [2021-10-07 16:43:33,390 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 144 transitions. Word has length 18 [2021-10-07 16:43:33,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:43:33,390 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 144 transitions. [2021-10-07 16:43:33,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:33,390 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 144 transitions. [2021-10-07 16:43:33,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 16:43:33,391 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:43:33,391 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:43:33,402 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Ended with exit code 0 [2021-10-07 16:43:33,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:43:33,597 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:43:33,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:43:33,598 INFO L82 PathProgramCache]: Analyzing trace with hash -295631903, now seen corresponding path program 37 times [2021-10-07 16:43:33,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:43:33,599 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [785282692] [2021-10-07 16:43:33,599 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 16:43:33,599 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:43:33,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:43:33,601 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:43:33,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2021-10-07 16:43:33,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:43:33,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-07 16:43:33,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:43:34,253 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:43:34,253 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:43:34,478 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 16:43:34,478 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:43:34,478 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [785282692] [2021-10-07 16:43:34,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [785282692] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:43:34,478 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:43:34,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 14 [2021-10-07 16:43:34,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624697028] [2021-10-07 16:43:34,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-07 16:43:34,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:43:34,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-07 16:43:34,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2021-10-07 16:43:34,480 INFO L87 Difference]: Start difference. First operand 80 states and 144 transitions. Second operand has 16 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:34,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:43:34,755 INFO L93 Difference]: Finished difference Result 97 states and 170 transitions. [2021-10-07 16:43:34,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-07 16:43:34,755 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-07 16:43:34,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:43:34,756 INFO L225 Difference]: With dead ends: 97 [2021-10-07 16:43:34,756 INFO L226 Difference]: Without dead ends: 90 [2021-10-07 16:43:34,757 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 458.7ms TimeCoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2021-10-07 16:43:34,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-10-07 16:43:34,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 84. [2021-10-07 16:43:34,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 83 states have (on average 1.8313253012048192) internal successors, (152), 83 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:34,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 152 transitions. [2021-10-07 16:43:34,760 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 152 transitions. Word has length 19 [2021-10-07 16:43:34,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:43:34,760 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 152 transitions. [2021-10-07 16:43:34,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:34,761 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 152 transitions. [2021-10-07 16:43:34,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 16:43:34,761 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:43:34,761 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:43:34,773 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (47)] Forceful destruction successful, exit code 0 [2021-10-07 16:43:34,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:43:34,962 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:43:34,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:43:34,963 INFO L82 PathProgramCache]: Analyzing trace with hash -1985295533, now seen corresponding path program 38 times [2021-10-07 16:43:34,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:43:34,963 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [440504585] [2021-10-07 16:43:34,963 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 16:43:34,964 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:43:34,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:43:34,965 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:43:34,966 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2021-10-07 16:43:35,350 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 16:43:35,351 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:43:35,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-07 16:43:35,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:43:35,684 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:43:35,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:43:35,891 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 16:43:35,892 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:43:35,892 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [440504585] [2021-10-07 16:43:35,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [440504585] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:43:35,892 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:43:35,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 14 [2021-10-07 16:43:35,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717730870] [2021-10-07 16:43:35,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-07 16:43:35,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:43:35,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-07 16:43:35,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2021-10-07 16:43:35,894 INFO L87 Difference]: Start difference. First operand 84 states and 152 transitions. Second operand has 16 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:36,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:43:36,228 INFO L93 Difference]: Finished difference Result 117 states and 209 transitions. [2021-10-07 16:43:36,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-07 16:43:36,229 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-07 16:43:36,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:43:36,230 INFO L225 Difference]: With dead ends: 117 [2021-10-07 16:43:36,230 INFO L226 Difference]: Without dead ends: 112 [2021-10-07 16:43:36,230 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 411.2ms TimeCoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2021-10-07 16:43:36,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-10-07 16:43:36,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 86. [2021-10-07 16:43:36,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 1.8470588235294119) internal successors, (157), 85 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:36,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 157 transitions. [2021-10-07 16:43:36,234 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 157 transitions. Word has length 19 [2021-10-07 16:43:36,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:43:36,234 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 157 transitions. [2021-10-07 16:43:36,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:36,234 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 157 transitions. [2021-10-07 16:43:36,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 16:43:36,235 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:43:36,235 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:43:36,250 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (48)] Forceful destruction successful, exit code 0 [2021-10-07 16:43:36,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:43:36,449 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:43:36,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:43:36,449 INFO L82 PathProgramCache]: Analyzing trace with hash 2066342001, now seen corresponding path program 39 times [2021-10-07 16:43:36,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:43:36,450 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [923611381] [2021-10-07 16:43:36,450 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 16:43:36,450 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:43:36,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:43:36,454 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:43:36,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2021-10-07 16:43:36,854 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 16:43:36,855 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:43:36,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 16:43:36,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:43:37,050 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-10-07 16:43:37,050 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:43:37,187 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-10-07 16:43:37,187 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:43:37,187 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [923611381] [2021-10-07 16:43:37,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [923611381] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-07 16:43:37,188 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 16:43:37,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2021-10-07 16:43:37,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169659633] [2021-10-07 16:43:37,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-07 16:43:37,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:43:37,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-07 16:43:37,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-10-07 16:43:37,190 INFO L87 Difference]: Start difference. First operand 86 states and 157 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:37,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:43:37,232 INFO L93 Difference]: Finished difference Result 95 states and 168 transitions. [2021-10-07 16:43:37,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-07 16:43:37,233 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-07 16:43:37,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:43:37,233 INFO L225 Difference]: With dead ends: 95 [2021-10-07 16:43:37,233 INFO L226 Difference]: Without dead ends: 34 [2021-10-07 16:43:37,233 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 114.3ms TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-10-07 16:43:37,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-10-07 16:43:37,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-10-07 16:43:37,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.5454545454545454) internal successors, (51), 33 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:37,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 51 transitions. [2021-10-07 16:43:37,235 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 51 transitions. Word has length 19 [2021-10-07 16:43:37,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:43:37,235 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 51 transitions. [2021-10-07 16:43:37,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:37,236 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 51 transitions. [2021-10-07 16:43:37,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 16:43:37,236 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:43:37,237 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:43:37,255 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (49)] Forceful destruction successful, exit code 0 [2021-10-07 16:43:37,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:43:37,453 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:43:37,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:43:37,454 INFO L82 PathProgramCache]: Analyzing trace with hash 1803282193, now seen corresponding path program 40 times [2021-10-07 16:43:37,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:43:37,455 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1709386044] [2021-10-07 16:43:37,455 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 16:43:37,455 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:43:37,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:43:37,456 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:43:37,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2021-10-07 16:43:37,830 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 16:43:37,831 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:43:37,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-07 16:43:37,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:43:38,305 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:43:38,305 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:43:38,939 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:43:38,939 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:43:38,939 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1709386044] [2021-10-07 16:43:38,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1709386044] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:43:38,940 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:43:38,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-10-07 16:43:38,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123094964] [2021-10-07 16:43:38,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-07 16:43:38,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:43:38,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-07 16:43:38,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2021-10-07 16:43:38,941 INFO L87 Difference]: Start difference. First operand 34 states and 51 transitions. Second operand has 22 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:39,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:43:39,288 INFO L93 Difference]: Finished difference Result 44 states and 66 transitions. [2021-10-07 16:43:39,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-07 16:43:39,288 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 16:43:39,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:43:39,289 INFO L225 Difference]: With dead ends: 44 [2021-10-07 16:43:39,289 INFO L226 Difference]: Without dead ends: 42 [2021-10-07 16:43:39,290 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 807.5ms TimeCoverageRelationStatistics Valid=110, Invalid=396, Unknown=0, NotChecked=0, Total=506 [2021-10-07 16:43:39,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-10-07 16:43:39,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 32. [2021-10-07 16:43:39,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.4838709677419355) internal successors, (46), 31 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:39,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions. [2021-10-07 16:43:39,292 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 20 [2021-10-07 16:43:39,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:43:39,292 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 46 transitions. [2021-10-07 16:43:39,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:39,293 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions. [2021-10-07 16:43:39,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 16:43:39,293 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:43:39,293 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:43:39,307 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (50)] Ended with exit code 0 [2021-10-07 16:43:39,506 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:43:39,507 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:43:39,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:43:39,508 INFO L82 PathProgramCache]: Analyzing trace with hash -388491369, now seen corresponding path program 41 times [2021-10-07 16:43:39,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:43:39,508 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1181272299] [2021-10-07 16:43:39,509 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 16:43:39,509 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:43:39,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:43:39,510 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:43:39,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2021-10-07 16:43:39,940 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-07 16:43:39,940 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:43:39,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-07 16:43:39,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:43:40,385 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:43:40,386 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:43:40,985 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:43:40,986 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:43:40,986 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1181272299] [2021-10-07 16:43:40,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1181272299] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:43:40,986 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:43:40,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-10-07 16:43:40,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554994580] [2021-10-07 16:43:40,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-07 16:43:40,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:43:40,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-07 16:43:40,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=359, Unknown=0, NotChecked=0, Total=462 [2021-10-07 16:43:40,989 INFO L87 Difference]: Start difference. First operand 32 states and 46 transitions. Second operand has 22 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 21 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:41,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:43:41,672 INFO L93 Difference]: Finished difference Result 44 states and 66 transitions. [2021-10-07 16:43:41,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-07 16:43:41,673 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 21 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 16:43:41,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:43:41,674 INFO L225 Difference]: With dead ends: 44 [2021-10-07 16:43:41,674 INFO L226 Difference]: Without dead ends: 34 [2021-10-07 16:43:41,674 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 1056.2ms TimeCoverageRelationStatistics Valid=157, Invalid=545, Unknown=0, NotChecked=0, Total=702 [2021-10-07 16:43:41,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-10-07 16:43:41,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-10-07 16:43:41,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.4848484848484849) internal successors, (49), 33 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:41,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions. [2021-10-07 16:43:41,675 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 20 [2021-10-07 16:43:41,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:43:41,676 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 49 transitions. [2021-10-07 16:43:41,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 21 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:41,676 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions. [2021-10-07 16:43:41,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-07 16:43:41,676 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:43:41,677 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:43:41,690 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (51)] Forceful destruction successful, exit code 0 [2021-10-07 16:43:41,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:43:41,891 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:43:41,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:43:41,891 INFO L82 PathProgramCache]: Analyzing trace with hash 253336167, now seen corresponding path program 42 times [2021-10-07 16:43:41,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:43:41,892 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1013765755] [2021-10-07 16:43:41,892 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 16:43:41,892 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:43:41,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:43:41,894 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:43:41,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2021-10-07 16:43:42,302 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-07 16:43:42,303 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:43:42,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 16:43:42,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:43:42,501 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-10-07 16:43:42,501 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:43:42,735 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-10-07 16:43:42,735 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:43:42,735 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1013765755] [2021-10-07 16:43:42,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1013765755] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-07 16:43:42,736 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 16:43:42,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2021-10-07 16:43:42,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394320482] [2021-10-07 16:43:42,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-07 16:43:42,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:43:42,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-07 16:43:42,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-10-07 16:43:42,737 INFO L87 Difference]: Start difference. First operand 34 states and 49 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:42,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:43:42,763 INFO L93 Difference]: Finished difference Result 33 states and 48 transitions. [2021-10-07 16:43:42,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-07 16:43:42,763 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-07 16:43:42,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:43:42,763 INFO L225 Difference]: With dead ends: 33 [2021-10-07 16:43:42,764 INFO L226 Difference]: Without dead ends: 0 [2021-10-07 16:43:42,764 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 136.5ms TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-10-07 16:43:42,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-07 16:43:42,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-07 16:43:42,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:42,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-07 16:43:42,765 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2021-10-07 16:43:42,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:43:42,765 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-07 16:43:42,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:42,765 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-07 16:43:42,765 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-07 16:43:42,768 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-07 16:43:42,768 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-07 16:43:42,768 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-07 16:43:42,769 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-07 16:43:42,769 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-07 16:43:42,769 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-07 16:43:42,769 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-07 16:43:42,769 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-07 16:43:42,769 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK [2021-10-07 16:43:42,770 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK [2021-10-07 16:43:42,770 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-07 16:43:42,770 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-07 16:43:42,781 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (52)] Ended with exit code 0 [2021-10-07 16:43:42,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:43:42,980 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-07 16:43:42,980 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-07 16:43:42,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.10 04:43:42 BasicIcfg [2021-10-07 16:43:42,984 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-07 16:43:42,986 INFO L168 Benchmark]: Toolchain (without parser) took 81150.06 ms. Allocated memory was 174.1 MB in the beginning and 209.7 MB in the end (delta: 35.7 MB). Free memory was 149.7 MB in the beginning and 113.7 MB in the end (delta: 36.0 MB). Peak memory consumption was 71.8 MB. Max. memory is 8.0 GB. [2021-10-07 16:43:42,986 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 174.1 MB. Free memory is still 149.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-07 16:43:42,987 INFO L168 Benchmark]: CACSL2BoogieTranslator took 276.16 ms. Allocated memory is still 174.1 MB. Free memory was 149.3 MB in the beginning and 139.0 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-10-07 16:43:42,988 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.32 ms. Allocated memory is still 174.1 MB. Free memory was 138.8 MB in the beginning and 137.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-07 16:43:42,988 INFO L168 Benchmark]: Boogie Preprocessor took 44.83 ms. Allocated memory is still 174.1 MB. Free memory was 137.4 MB in the beginning and 136.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-07 16:43:42,989 INFO L168 Benchmark]: RCFGBuilder took 556.25 ms. Allocated memory is still 174.1 MB. Free memory was 136.1 MB in the beginning and 124.2 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-10-07 16:43:42,989 INFO L168 Benchmark]: TraceAbstraction took 80214.72 ms. Allocated memory was 174.1 MB in the beginning and 209.7 MB in the end (delta: 35.7 MB). Free memory was 123.7 MB in the beginning and 113.7 MB in the end (delta: 10.0 MB). Peak memory consumption was 46.7 MB. Max. memory is 8.0 GB. [2021-10-07 16:43:42,992 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 174.1 MB. Free memory is still 149.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 276.16 ms. Allocated memory is still 174.1 MB. Free memory was 149.3 MB in the beginning and 139.0 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 44.32 ms. Allocated memory is still 174.1 MB. Free memory was 138.8 MB in the beginning and 137.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 44.83 ms. Allocated memory is still 174.1 MB. Free memory was 137.4 MB in the beginning and 136.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 556.25 ms. Allocated memory is still 174.1 MB. Free memory was 136.1 MB in the beginning and 124.2 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 80214.72 ms. Allocated memory was 174.1 MB in the beginning and 209.7 MB in the end (delta: 35.7 MB). Free memory was 123.7 MB in the beginning and 113.7 MB in the end (delta: 10.0 MB). Peak memory consumption was 46.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7990.0ms, 87 PlacesBefore, 30 PlacesAfterwards, 86 TransitionsBefore, 25 TransitionsAfterwards, 496 CoEnabledTransitionPairs, 6 FixpointIterations, 52 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 4 ConcurrentYvCompositions, 4 ChoiceCompositions, 84 TotalNumberOfCompositions, 578 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 578, positive: 578, positive conditional: 0, positive unconditional: 578, 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: 333, positive: 333, positive conditional: 0, positive unconditional: 333, 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: 333, positive: 333, positive conditional: 0, positive unconditional: 333, 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: 578, positive: 245, positive conditional: 0, positive unconditional: 245, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 333, unknown conditional: 0, unknown unconditional: 333] , Statistics on independence cache: Total cache size (in pairs): 26, Positive cache size: 26, Positive conditional cache size: 0, Positive unconditional cache size: 26, 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 - PositiveResult [Line: 64]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 64]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 65]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 65]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 66]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 66]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 67]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 67]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 70]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 56]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 97 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 80004.0ms, OverallIterations: 51, TraceHistogramMax: 5, EmptinessCheckTime: 55.9ms, AutomataDifference: 26047.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 8047.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1230 SDtfs, 2901 SDslu, 5633 SDs, 0 SdLazy, 5860 SolverSat, 738 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 8914.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1692 GetRequests, 922 SyntacticMatches, 2 SemanticMatches, 768 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2458 ImplicationChecksByTransitivity, 26773.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=304occurred in iteration=35, InterpolantAutomatonStates: 668, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 350.5ms AutomataMinimizationTime, 51 MinimizatonAttempts, 2228 StatesRemovedByMinimization, 41 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 318.2ms SsaConstructionTime, 1986.2ms SatisfiabilityAnalysisTime, 23654.6ms InterpolantComputationTime, 753 NumberOfCodeBlocks, 738 NumberOfCodeBlocksAsserted, 97 NumberOfCheckSat, 1404 ConstructedInterpolants, 14 QuantifiedInterpolants, 11078 SizeOfPredicates, 120 NumberOfNonLiveVariables, 3385 ConjunctsInSsa, 505 ConjunctsInUnsatCore, 102 InterpolantComputations, 22 PerfectInterpolantSequences, 354/942 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 - AllSpecificationsHoldResult: All specifications hold 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-07 16:43:43,038 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...