/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/easy6.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-06 20:57:52,497 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-06 20:57:52,502 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-06 20:57:52,547 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-06 20:57:52,648 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-06 20:57:52,712 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-06 20:57:52,712 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-06 20:57:52,713 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-06 20:57:52,713 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-06 20:57:52,718 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-06 20:57:52,719 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-06 20:57:52,719 INFO L138 SettingsManager]: * Use SBE=true [2021-10-06 20:57:52,719 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-06 20:57:52,720 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-06 20:57:52,720 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-06 20:57:52,721 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-06 20:57:52,721 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-06 20:57:52,721 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-06 20:57:52,722 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-06 20:57:52,722 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-06 20:57:52,722 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-06 20:57:52,722 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-06 20:57:52,723 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-06 20:57:52,723 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-06 20:57:52,723 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-06 20:57:52,723 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-06 20:57:52,723 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-06 20:57:52,724 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-06 20:57:52,724 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-06 20:57:52,724 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-06 20:57:52,724 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-06 20:57:52,725 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-06 20:57:52,725 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-06 20:57:52,725 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-06 20:57:52,725 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-06 20:57:52,725 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-06 20:57:52,726 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-06 20:57:52,726 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-06 20:57:53,131 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-06 20:57:53,156 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-06 20:57:53,159 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-06 20:57:53,160 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-06 20:57:53,161 INFO L275 PluginConnector]: CDTParser initialized [2021-10-06 20:57:53,162 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/test/easy6.wvr.c [2021-10-06 20:57:53,247 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f8e6bab52/01eb2e8e73a6483f8f7d1de0485346bf/FLAGcc27dd47e [2021-10-06 20:57:54,040 INFO L306 CDTParser]: Found 1 translation units. [2021-10-06 20:57:54,040 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/test/easy6.wvr.c [2021-10-06 20:57:54,051 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f8e6bab52/01eb2e8e73a6483f8f7d1de0485346bf/FLAGcc27dd47e [2021-10-06 20:57:54,383 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f8e6bab52/01eb2e8e73a6483f8f7d1de0485346bf [2021-10-06 20:57:54,386 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-06 20:57:54,394 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-06 20:57:54,395 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-06 20:57:54,396 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-06 20:57:54,400 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-06 20:57:54,401 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 08:57:54" (1/1) ... [2021-10-06 20:57:54,402 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@287b6d36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:57:54, skipping insertion in model container [2021-10-06 20:57:54,402 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 08:57:54" (1/1) ... [2021-10-06 20:57:54,410 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-06 20:57:54,428 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-06 20:57:54,599 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/easy6.wvr.c[1988,2001] [2021-10-06 20:57:54,603 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-06 20:57:54,621 INFO L203 MainTranslator]: Completed pre-run [2021-10-06 20:57:54,648 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/easy6.wvr.c[1988,2001] [2021-10-06 20:57:54,649 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-06 20:57:54,670 INFO L208 MainTranslator]: Completed translation [2021-10-06 20:57:54,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:57:54 WrapperNode [2021-10-06 20:57:54,671 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-06 20:57:54,673 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-06 20:57:54,673 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-06 20:57:54,673 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-06 20:57:54,683 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:57:54" (1/1) ... [2021-10-06 20:57:54,696 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:57:54" (1/1) ... [2021-10-06 20:57:54,723 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-06 20:57:54,725 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-06 20:57:54,725 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-06 20:57:54,725 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-06 20:57:54,736 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:57:54" (1/1) ... [2021-10-06 20:57:54,736 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:57:54" (1/1) ... [2021-10-06 20:57:54,740 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:57:54" (1/1) ... [2021-10-06 20:57:54,740 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:57:54" (1/1) ... [2021-10-06 20:57:54,747 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:57:54" (1/1) ... [2021-10-06 20:57:54,750 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:57:54" (1/1) ... [2021-10-06 20:57:54,752 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:57:54" (1/1) ... [2021-10-06 20:57:54,759 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-06 20:57:54,760 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-06 20:57:54,760 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-06 20:57:54,760 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-06 20:57:54,761 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:57:54" (1/1) ... [2021-10-06 20:57:54,776 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-06 20:57:54,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 20:57:54,816 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) [2021-10-06 20:57:54,834 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 [2021-10-06 20:57:54,901 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-06 20:57:54,901 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-06 20:57:54,901 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-06 20:57:54,902 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-06 20:57:54,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-06 20:57:54,902 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-06 20:57:54,902 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-06 20:57:54,902 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-06 20:57:54,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-06 20:57:54,903 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-06 20:57:54,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-06 20:57:54,905 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-06 20:57:55,383 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-06 20:57:55,383 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2021-10-06 20:57:55,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 08:57:55 BoogieIcfgContainer [2021-10-06 20:57:55,386 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-06 20:57:55,418 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-06 20:57:55,418 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-06 20:57:55,422 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-06 20:57:55,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.10 08:57:54" (1/3) ... [2021-10-06 20:57:55,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ab0fff3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 08:57:55, skipping insertion in model container [2021-10-06 20:57:55,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:57:54" (2/3) ... [2021-10-06 20:57:55,425 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ab0fff3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 08:57:55, skipping insertion in model container [2021-10-06 20:57:55,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 08:57:55" (3/3) ... [2021-10-06 20:57:55,427 INFO L111 eAbstractionObserver]: Analyzing ICFG easy6.wvr.c [2021-10-06 20:57:55,434 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-06 20:57:55,435 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-10-06 20:57:55,435 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-06 20:57:55,513 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:55,514 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:55,514 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:55,515 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:55,515 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:55,515 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:55,515 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:55,516 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:55,516 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:55,518 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:55,519 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:55,519 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:55,520 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:55,520 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:55,520 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:55,520 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:55,521 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:55,521 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:55,525 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:55,525 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:55,526 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:55,527 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:55,527 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:55,527 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:55,528 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:55,529 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:55,534 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:55,534 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:55,535 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:55,537 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:55,538 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:55,538 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:55,538 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:55,539 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:55,539 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:55,539 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:55,539 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:55,543 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:55,543 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:55,544 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:55,544 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:55,544 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:55,544 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:55,545 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:55,547 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:55,548 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:55,548 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:55,548 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:55,559 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:55,559 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:55,560 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:55,560 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:55,568 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:55,569 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:55,569 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:55,569 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:57:55,585 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-06 20:57:55,668 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-06 20:57:55,681 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 [2021-10-06 20:57:55,682 INFO L340 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2021-10-06 20:57:55,716 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-06 20:57:55,734 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 106 places, 104 transitions, 224 flow [2021-10-06 20:57:55,737 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 106 places, 104 transitions, 224 flow [2021-10-06 20:57:55,740 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 106 places, 104 transitions, 224 flow [2021-10-06 20:57:55,818 INFO L129 PetriNetUnfolder]: 5/102 cut-off events. [2021-10-06 20:57:55,819 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-06 20:57:55,826 INFO L84 FinitePrefix]: Finished finitePrefix Result has 111 conditions, 102 events. 5/102 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 100 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2021-10-06 20:57:55,832 INFO L116 LiptonReduction]: Number of co-enabled transitions 1720 [2021-10-06 20:58:01,905 INFO L131 LiptonReduction]: Checked pairs total: 8112 [2021-10-06 20:58:01,906 INFO L133 LiptonReduction]: Total number of compositions: 104 [2021-10-06 20:58:01,916 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 46 places, 42 transitions, 100 flow [2021-10-06 20:58:01,958 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 487 states, 477 states have (on average 2.748427672955975) internal successors, (1311), 486 states have internal predecessors, (1311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:01,963 INFO L276 IsEmpty]: Start isEmpty. Operand has 487 states, 477 states have (on average 2.748427672955975) internal successors, (1311), 486 states have internal predecessors, (1311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:01,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2021-10-06 20:58:01,968 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:58:01,969 INFO L512 BasicCegarLoop]: trace histogram [1] [2021-10-06 20:58:01,969 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:58:01,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:58:01,975 INFO L82 PathProgramCache]: Analyzing trace with hash 396, now seen corresponding path program 1 times [2021-10-06 20:58:01,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:58:01,988 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [313373421] [2021-10-06 20:58:01,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 20:58:01,989 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:58:01,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:58:01,993 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) [2021-10-06 20:58:02,018 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-06 20:58:02,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 20:58:02,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-06 20:58:02,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:58:02,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:02,076 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:58:02,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:02,078 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:58:02,078 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [313373421] [2021-10-06 20:58:02,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [313373421] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 20:58:02,079 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 20:58:02,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0, 0] imperfect sequences [] total 0 [2021-10-06 20:58:02,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595546995] [2021-10-06 20:58:02,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-06 20:58:02,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:58:02,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-06 20:58:02,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-06 20:58:02,106 INFO L87 Difference]: Start difference. First operand has 487 states, 477 states have (on average 2.748427672955975) internal successors, (1311), 486 states have internal predecessors, (1311), 0 states have call successors, (0), 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) [2021-10-06 20:58:02,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:58:02,147 INFO L93 Difference]: Finished difference Result 484 states and 1176 transitions. [2021-10-06 20:58:02,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-06 20:58:02,149 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 [2021-10-06 20:58:02,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:58:02,169 INFO L225 Difference]: With dead ends: 484 [2021-10-06 20:58:02,169 INFO L226 Difference]: Without dead ends: 484 [2021-10-06 20:58:02,170 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 [2021-10-06 20:58:02,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2021-10-06 20:58:02,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 484. [2021-10-06 20:58:02,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 477 states have (on average 2.4654088050314464) internal successors, (1176), 483 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:02,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 1176 transitions. [2021-10-06 20:58:02,277 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 1176 transitions. Word has length 1 [2021-10-06 20:58:02,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:58:02,278 INFO L470 AbstractCegarLoop]: Abstraction has 484 states and 1176 transitions. [2021-10-06 20:58:02,278 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) [2021-10-06 20:58:02,278 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 1176 transitions. [2021-10-06 20:58:02,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-06 20:58:02,279 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:58:02,279 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-06 20:58:02,289 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-06 20:58:02,487 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 [2021-10-06 20:58:02,489 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:58:02,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:58:02,491 INFO L82 PathProgramCache]: Analyzing trace with hash 391100, now seen corresponding path program 1 times [2021-10-06 20:58:02,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:58:02,492 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1498801664] [2021-10-06 20:58:02,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 20:58:02,492 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:58:02,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:58:02,494 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) [2021-10-06 20:58:02,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-06 20:58:02,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 20:58:02,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-06 20:58:02,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:58:02,823 INFO L354 Elim1Store]: treesize reduction 76, result has 30.3 percent of original size [2021-10-06 20:58:02,824 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 [2021-10-06 20:58:02,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:02,923 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:58:02,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:02,985 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:58:02,985 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1498801664] [2021-10-06 20:58:02,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1498801664] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 20:58:02,986 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 20:58:02,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 20:58:02,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080593530] [2021-10-06 20:58:02,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 20:58:02,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:58:02,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 20:58:02,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 20:58:02,990 INFO L87 Difference]: Start difference. First operand 484 states and 1176 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) [2021-10-06 20:58:03,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:58:03,029 INFO L93 Difference]: Finished difference Result 464 states and 1138 transitions. [2021-10-06 20:58:03,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 20:58:03,030 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 [2021-10-06 20:58:03,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:58:03,035 INFO L225 Difference]: With dead ends: 464 [2021-10-06 20:58:03,035 INFO L226 Difference]: Without dead ends: 464 [2021-10-06 20:58:03,036 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 41.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 20:58:03,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2021-10-06 20:58:03,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 464. [2021-10-06 20:58:03,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464 states, 459 states have (on average 2.479302832244009) internal successors, (1138), 463 states have internal predecessors, (1138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:03,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 1138 transitions. [2021-10-06 20:58:03,081 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 1138 transitions. Word has length 3 [2021-10-06 20:58:03,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:58:03,082 INFO L470 AbstractCegarLoop]: Abstraction has 464 states and 1138 transitions. [2021-10-06 20:58:03,082 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) [2021-10-06 20:58:03,082 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 1138 transitions. [2021-10-06 20:58:03,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-06 20:58:03,083 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:58:03,083 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-06 20:58:03,096 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-06 20:58:03,283 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 [2021-10-06 20:58:03,284 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:58:03,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:58:03,286 INFO L82 PathProgramCache]: Analyzing trace with hash 391101, now seen corresponding path program 1 times [2021-10-06 20:58:03,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:58:03,287 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2016610522] [2021-10-06 20:58:03,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 20:58:03,288 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:58:03,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:58:03,289 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) [2021-10-06 20:58:03,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-06 20:58:03,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 20:58:03,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-06 20:58:03,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:58:03,349 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-06 20:58:03,350 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 [2021-10-06 20:58:03,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:03,379 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:58:03,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:03,389 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:58:03,390 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2016610522] [2021-10-06 20:58:03,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2016610522] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 20:58:03,390 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 20:58:03,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-06 20:58:03,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082311549] [2021-10-06 20:58:03,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 20:58:03,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:58:03,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 20:58:03,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 20:58:03,392 INFO L87 Difference]: Start difference. First operand 464 states and 1138 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) [2021-10-06 20:58:03,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:58:03,417 INFO L93 Difference]: Finished difference Result 444 states and 1100 transitions. [2021-10-06 20:58:03,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 20:58:03,417 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 [2021-10-06 20:58:03,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:58:03,421 INFO L225 Difference]: With dead ends: 444 [2021-10-06 20:58:03,422 INFO L226 Difference]: Without dead ends: 444 [2021-10-06 20:58:03,422 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 20:58:03,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2021-10-06 20:58:03,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 444. [2021-10-06 20:58:03,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 441 states have (on average 2.494331065759637) internal successors, (1100), 443 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:03,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 1100 transitions. [2021-10-06 20:58:03,442 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 1100 transitions. Word has length 3 [2021-10-06 20:58:03,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:58:03,443 INFO L470 AbstractCegarLoop]: Abstraction has 444 states and 1100 transitions. [2021-10-06 20:58:03,443 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) [2021-10-06 20:58:03,443 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 1100 transitions. [2021-10-06 20:58:03,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-06 20:58:03,444 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:58:03,444 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-06 20:58:03,461 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-06 20:58:03,657 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 [2021-10-06 20:58:03,658 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:58:03,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:58:03,659 INFO L82 PathProgramCache]: Analyzing trace with hash 375854794, now seen corresponding path program 1 times [2021-10-06 20:58:03,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:58:03,660 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [826777849] [2021-10-06 20:58:03,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 20:58:03,661 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:58:03,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:58:03,662 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) [2021-10-06 20:58:03,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-06 20:58:03,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 20:58:03,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-06 20:58:03,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:58:03,745 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-06 20:58:03,746 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 [2021-10-06 20:58:03,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:03,799 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:58:03,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:03,818 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:58:03,819 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [826777849] [2021-10-06 20:58:03,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [826777849] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 20:58:03,819 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 20:58:03,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-06 20:58:03,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67175351] [2021-10-06 20:58:03,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 20:58:03,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:58:03,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 20:58:03,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 20:58:03,823 INFO L87 Difference]: Start difference. First operand 444 states and 1100 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) [2021-10-06 20:58:03,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:58:03,845 INFO L93 Difference]: Finished difference Result 344 states and 820 transitions. [2021-10-06 20:58:03,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 20:58:03,846 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 [2021-10-06 20:58:03,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:58:03,849 INFO L225 Difference]: With dead ends: 344 [2021-10-06 20:58:03,850 INFO L226 Difference]: Without dead ends: 344 [2021-10-06 20:58:03,851 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 20:58:03,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2021-10-06 20:58:03,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 344. [2021-10-06 20:58:03,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 342 states have (on average 2.3976608187134505) internal successors, (820), 343 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:03,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 820 transitions. [2021-10-06 20:58:03,868 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 820 transitions. Word has length 5 [2021-10-06 20:58:03,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:58:03,870 INFO L470 AbstractCegarLoop]: Abstraction has 344 states and 820 transitions. [2021-10-06 20:58:03,870 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) [2021-10-06 20:58:03,870 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 820 transitions. [2021-10-06 20:58:03,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-06 20:58:03,871 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:58:03,871 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-06 20:58:03,891 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-10-06 20:58:04,085 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 [2021-10-06 20:58:04,085 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:58:04,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:58:04,087 INFO L82 PathProgramCache]: Analyzing trace with hash 375854796, now seen corresponding path program 1 times [2021-10-06 20:58:04,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:58:04,089 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1627422990] [2021-10-06 20:58:04,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 20:58:04,093 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:58:04,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:58:04,095 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) [2021-10-06 20:58:04,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-06 20:58:04,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 20:58:04,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-06 20:58:04,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:58:04,251 INFO L354 Elim1Store]: treesize reduction 76, result has 30.3 percent of original size [2021-10-06 20:58:04,251 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 26 treesize of output 48 [2021-10-06 20:58:04,260 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 49 treesize of output 47 [2021-10-06 20:58:04,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:04,405 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:58:04,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:04,490 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:58:04,491 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1627422990] [2021-10-06 20:58:04,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1627422990] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 20:58:04,491 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 20:58:04,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 20:58:04,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412200695] [2021-10-06 20:58:04,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 20:58:04,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:58:04,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 20:58:04,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 20:58:04,493 INFO L87 Difference]: Start difference. First operand 344 states and 820 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) [2021-10-06 20:58:04,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:58:04,512 INFO L93 Difference]: Finished difference Result 244 states and 540 transitions. [2021-10-06 20:58:04,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 20:58:04,513 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 [2021-10-06 20:58:04,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:58:04,515 INFO L225 Difference]: With dead ends: 244 [2021-10-06 20:58:04,516 INFO L226 Difference]: Without dead ends: 244 [2021-10-06 20:58:04,516 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 20:58:04,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2021-10-06 20:58:04,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 244. [2021-10-06 20:58:04,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 243 states have (on average 2.2222222222222223) internal successors, (540), 243 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:04,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 540 transitions. [2021-10-06 20:58:04,526 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 540 transitions. Word has length 5 [2021-10-06 20:58:04,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:58:04,526 INFO L470 AbstractCegarLoop]: Abstraction has 244 states and 540 transitions. [2021-10-06 20:58:04,527 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) [2021-10-06 20:58:04,527 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 540 transitions. [2021-10-06 20:58:04,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-06 20:58:04,530 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:58:04,530 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:58:04,546 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-06 20:58:04,742 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 [2021-10-06 20:58:04,743 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)] === [2021-10-06 20:58:04,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:58:04,744 INFO L82 PathProgramCache]: Analyzing trace with hash -914107744, now seen corresponding path program 1 times [2021-10-06 20:58:04,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:58:04,746 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1687681196] [2021-10-06 20:58:04,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 20:58:04,746 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:58:04,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:58:04,747 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) [2021-10-06 20:58:04,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-06 20:58:04,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 20:58:04,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-06 20:58:04,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:58:05,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:05,009 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:58:05,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:05,423 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:58:05,423 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1687681196] [2021-10-06 20:58:05,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1687681196] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 20:58:05,424 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 20:58:05,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-10-06 20:58:05,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438103170] [2021-10-06 20:58:05,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-06 20:58:05,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:58:05,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-06 20:58:05,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-10-06 20:58:05,426 INFO L87 Difference]: Start difference. First operand 244 states and 540 transitions. Second operand has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 12 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:05,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:58:05,761 INFO L93 Difference]: Finished difference Result 460 states and 1001 transitions. [2021-10-06 20:58:05,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-06 20:58:05,762 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 12 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-10-06 20:58:05,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:58:05,767 INFO L225 Difference]: With dead ends: 460 [2021-10-06 20:58:05,767 INFO L226 Difference]: Without dead ends: 444 [2021-10-06 20:58:05,768 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 346.8ms TimeCoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2021-10-06 20:58:05,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2021-10-06 20:58:05,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 292. [2021-10-06 20:58:05,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 291 states have (on average 2.2268041237113403) internal successors, (648), 291 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:05,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 648 transitions. [2021-10-06 20:58:05,783 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 648 transitions. Word has length 27 [2021-10-06 20:58:05,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:58:05,783 INFO L470 AbstractCegarLoop]: Abstraction has 292 states and 648 transitions. [2021-10-06 20:58:05,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 12 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:05,784 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 648 transitions. [2021-10-06 20:58:05,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-06 20:58:05,787 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:58:05,787 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:58:05,807 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-06 20:58:06,005 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 [2021-10-06 20:58:06,007 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)] === [2021-10-06 20:58:06,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:58:06,008 INFO L82 PathProgramCache]: Analyzing trace with hash 61381920, now seen corresponding path program 2 times [2021-10-06 20:58:06,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:58:06,009 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1795281632] [2021-10-06 20:58:06,009 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 20:58:06,010 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:58:06,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:58:06,011 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) [2021-10-06 20:58:06,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-06 20:58:06,107 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 20:58:06,107 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:58:06,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-06 20:58:06,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:58:06,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:06,221 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:58:06,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:06,311 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:58:06,311 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1795281632] [2021-10-06 20:58:06,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1795281632] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 20:58:06,312 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 20:58:06,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-06 20:58:06,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434400639] [2021-10-06 20:58:06,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 20:58:06,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:58:06,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 20:58:06,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-06 20:58:06,314 INFO L87 Difference]: Start difference. First operand 292 states and 648 transitions. Second operand has 7 states, 6 states have (on average 4.5) internal successors, (27), 6 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) [2021-10-06 20:58:06,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:58:06,404 INFO L93 Difference]: Finished difference Result 343 states and 727 transitions. [2021-10-06 20:58:06,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 20:58:06,405 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.5) internal successors, (27), 6 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 27 [2021-10-06 20:58:06,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:58:06,407 INFO L225 Difference]: With dead ends: 343 [2021-10-06 20:58:06,407 INFO L226 Difference]: Without dead ends: 200 [2021-10-06 20:58:06,407 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 52.3ms TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-10-06 20:58:06,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-10-06 20:58:06,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 168. [2021-10-06 20:58:06,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 167 states have (on average 2.179640718562874) internal successors, (364), 167 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:06,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 364 transitions. [2021-10-06 20:58:06,415 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 364 transitions. Word has length 27 [2021-10-06 20:58:06,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:58:06,416 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 364 transitions. [2021-10-06 20:58:06,416 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.5) internal successors, (27), 6 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) [2021-10-06 20:58:06,416 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 364 transitions. [2021-10-06 20:58:06,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-06 20:58:06,417 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:58:06,417 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:58:06,432 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-06 20:58:06,618 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 [2021-10-06 20:58:06,619 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)] === [2021-10-06 20:58:06,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:58:06,620 INFO L82 PathProgramCache]: Analyzing trace with hash 1867720160, now seen corresponding path program 3 times [2021-10-06 20:58:06,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:58:06,621 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1579087254] [2021-10-06 20:58:06,621 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 20:58:06,621 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:58:06,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:58:06,622 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) [2021-10-06 20:58:06,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-06 20:58:06,708 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-06 20:58:06,709 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:58:06,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 20:58:06,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:58:06,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:06,901 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:58:07,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:07,245 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:58:07,245 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1579087254] [2021-10-06 20:58:07,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1579087254] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 20:58:07,246 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 20:58:07,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-10-06 20:58:07,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180461428] [2021-10-06 20:58:07,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-06 20:58:07,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:58:07,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-06 20:58:07,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-10-06 20:58:07,248 INFO L87 Difference]: Start difference. First operand 168 states and 364 transitions. Second operand has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 12 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:07,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:58:07,534 INFO L93 Difference]: Finished difference Result 318 states and 673 transitions. [2021-10-06 20:58:07,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-06 20:58:07,535 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 12 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-10-06 20:58:07,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:58:07,537 INFO L225 Difference]: With dead ends: 318 [2021-10-06 20:58:07,538 INFO L226 Difference]: Without dead ends: 268 [2021-10-06 20:58:07,538 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 368.0ms TimeCoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2021-10-06 20:58:07,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2021-10-06 20:58:07,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 158. [2021-10-06 20:58:07,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 157 states have (on average 2.159235668789809) internal successors, (339), 157 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) [2021-10-06 20:58:07,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 339 transitions. [2021-10-06 20:58:07,545 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 339 transitions. Word has length 27 [2021-10-06 20:58:07,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:58:07,546 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 339 transitions. [2021-10-06 20:58:07,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 12 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:07,546 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 339 transitions. [2021-10-06 20:58:07,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-06 20:58:07,547 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:58:07,547 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:58:07,567 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-06 20:58:07,767 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 [2021-10-06 20:58:07,768 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)] === [2021-10-06 20:58:07,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:58:07,769 INFO L82 PathProgramCache]: Analyzing trace with hash -1082823486, now seen corresponding path program 4 times [2021-10-06 20:58:07,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:58:07,770 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1346510602] [2021-10-06 20:58:07,770 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 20:58:07,771 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:58:07,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:58:07,772 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) [2021-10-06 20:58:07,809 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-06 20:58:07,882 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 20:58:07,883 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:58:07,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-06 20:58:07,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:58:08,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:08,080 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:58:08,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:08,409 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:58:08,410 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1346510602] [2021-10-06 20:58:08,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1346510602] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 20:58:08,410 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 20:58:08,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-10-06 20:58:08,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184527434] [2021-10-06 20:58:08,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-06 20:58:08,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:58:08,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-06 20:58:08,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-10-06 20:58:08,412 INFO L87 Difference]: Start difference. First operand 158 states and 339 transitions. Second operand has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 12 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:08,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:58:08,691 INFO L93 Difference]: Finished difference Result 278 states and 579 transitions. [2021-10-06 20:58:08,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-06 20:58:08,692 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 12 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-10-06 20:58:08,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:58:08,693 INFO L225 Difference]: With dead ends: 278 [2021-10-06 20:58:08,694 INFO L226 Difference]: Without dead ends: 238 [2021-10-06 20:58:08,694 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 368.4ms TimeCoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2021-10-06 20:58:08,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2021-10-06 20:58:08,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 164. [2021-10-06 20:58:08,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 163 states have (on average 2.1349693251533743) internal successors, (348), 163 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:08,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 348 transitions. [2021-10-06 20:58:08,701 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 348 transitions. Word has length 27 [2021-10-06 20:58:08,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:58:08,701 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 348 transitions. [2021-10-06 20:58:08,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 12 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:08,702 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 348 transitions. [2021-10-06 20:58:08,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-06 20:58:08,703 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:58:08,703 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:58:08,717 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-06 20:58:08,917 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 [2021-10-06 20:58:08,918 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)] === [2021-10-06 20:58:08,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:58:08,919 INFO L82 PathProgramCache]: Analyzing trace with hash -2018475262, now seen corresponding path program 5 times [2021-10-06 20:58:08,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:58:08,920 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [773552424] [2021-10-06 20:58:08,920 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 20:58:08,921 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:58:08,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:58:08,922 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) [2021-10-06 20:58:08,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-06 20:58:09,021 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 20:58:09,021 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:58:09,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-06 20:58:09,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:58:09,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:09,094 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:58:09,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:09,167 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:58:09,167 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [773552424] [2021-10-06 20:58:09,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [773552424] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 20:58:09,168 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 20:58:09,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-10-06 20:58:09,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431001409] [2021-10-06 20:58:09,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-06 20:58:09,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:58:09,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-06 20:58:09,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-06 20:58:09,170 INFO L87 Difference]: Start difference. First operand 164 states and 348 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 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) [2021-10-06 20:58:09,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:58:09,205 INFO L93 Difference]: Finished difference Result 178 states and 365 transitions. [2021-10-06 20:58:09,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-06 20:58:09,206 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 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 27 [2021-10-06 20:58:09,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:58:09,208 INFO L225 Difference]: With dead ends: 178 [2021-10-06 20:58:09,208 INFO L226 Difference]: Without dead ends: 150 [2021-10-06 20:58:09,208 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.3ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-06 20:58:09,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-10-06 20:58:09,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2021-10-06 20:58:09,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 149 states have (on average 2.1073825503355703) internal successors, (314), 149 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:09,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 314 transitions. [2021-10-06 20:58:09,214 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 314 transitions. Word has length 27 [2021-10-06 20:58:09,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:58:09,215 INFO L470 AbstractCegarLoop]: Abstraction has 150 states and 314 transitions. [2021-10-06 20:58:09,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 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) [2021-10-06 20:58:09,215 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 314 transitions. [2021-10-06 20:58:09,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-06 20:58:09,216 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:58:09,233 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:58:09,246 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-06 20:58:09,446 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 [2021-10-06 20:58:09,446 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)] === [2021-10-06 20:58:09,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:58:09,447 INFO L82 PathProgramCache]: Analyzing trace with hash 786486628, now seen corresponding path program 6 times [2021-10-06 20:58:09,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:58:09,448 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1861495239] [2021-10-06 20:58:09,448 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 20:58:09,448 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:58:09,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:58:09,450 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) [2021-10-06 20:58:09,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-06 20:58:09,578 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-10-06 20:58:09,579 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:58:09,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-06 20:58:09,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:58:09,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:09,678 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:58:09,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:09,755 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:58:09,756 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1861495239] [2021-10-06 20:58:09,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1861495239] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 20:58:09,756 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 20:58:09,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-06 20:58:09,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906742238] [2021-10-06 20:58:09,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 20:58:09,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:58:09,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 20:58:09,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-06 20:58:09,758 INFO L87 Difference]: Start difference. First operand 150 states and 314 transitions. Second operand has 7 states, 6 states have (on average 4.5) internal successors, (27), 6 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) [2021-10-06 20:58:09,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:58:09,836 INFO L93 Difference]: Finished difference Result 181 states and 361 transitions. [2021-10-06 20:58:09,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 20:58:09,837 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.5) internal successors, (27), 6 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 27 [2021-10-06 20:58:09,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:58:09,838 INFO L225 Difference]: With dead ends: 181 [2021-10-06 20:58:09,838 INFO L226 Difference]: Without dead ends: 136 [2021-10-06 20:58:09,839 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 50.6ms TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-10-06 20:58:09,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-10-06 20:58:09,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 122. [2021-10-06 20:58:09,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 121 states have (on average 2.0165289256198347) internal successors, (244), 121 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:09,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 244 transitions. [2021-10-06 20:58:09,843 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 244 transitions. Word has length 27 [2021-10-06 20:58:09,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:58:09,844 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 244 transitions. [2021-10-06 20:58:09,844 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.5) internal successors, (27), 6 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) [2021-10-06 20:58:09,844 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 244 transitions. [2021-10-06 20:58:09,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-06 20:58:09,845 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:58:09,845 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:58:09,863 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-06 20:58:10,056 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 [2021-10-06 20:58:10,057 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)] === [2021-10-06 20:58:10,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:58:10,057 INFO L82 PathProgramCache]: Analyzing trace with hash 983840420, now seen corresponding path program 7 times [2021-10-06 20:58:10,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:58:10,058 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1664832418] [2021-10-06 20:58:10,058 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 20:58:10,059 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:58:10,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:58:10,060 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) [2021-10-06 20:58:10,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-06 20:58:10,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 20:58:10,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-06 20:58:10,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:58:10,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:10,373 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:58:10,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:10,874 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:58:10,874 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1664832418] [2021-10-06 20:58:10,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1664832418] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 20:58:10,875 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 20:58:10,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-10-06 20:58:10,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988712130] [2021-10-06 20:58:10,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-06 20:58:10,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:58:10,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-06 20:58:10,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-10-06 20:58:10,877 INFO L87 Difference]: Start difference. First operand 122 states and 244 transitions. Second operand has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 12 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:10,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:58:10,989 INFO L93 Difference]: Finished difference Result 88 states and 177 transitions. [2021-10-06 20:58:10,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 20:58:10,991 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 12 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-10-06 20:58:10,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:58:10,991 INFO L225 Difference]: With dead ends: 88 [2021-10-06 20:58:10,991 INFO L226 Difference]: Without dead ends: 0 [2021-10-06 20:58:10,992 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 363.0ms TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2021-10-06 20:58:10,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-06 20:58:10,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-06 20:58:10,992 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) [2021-10-06 20:58:10,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-06 20:58:10,992 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2021-10-06 20:58:10,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:58:10,993 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-06 20:58:10,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 12 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:10,993 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-06 20:58:10,993 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-06 20:58:10,996 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-06 20:58:10,997 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-06 20:58:10,997 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-06 20:58:10,997 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-06 20:58:10,998 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-06 20:58:10,998 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-06 20:58:10,998 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-06 20:58:10,998 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-06 20:58:10,998 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK [2021-10-06 20:58:10,999 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK [2021-10-06 20:58:10,999 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-06 20:58:10,999 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-06 20:58:11,016 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-06 20:58:11,211 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 [2021-10-06 20:58:11,218 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-06 20:58:11,218 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-06 20:58:11,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.10 08:58:11 BasicIcfg [2021-10-06 20:58:11,223 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-06 20:58:11,225 INFO L168 Benchmark]: Toolchain (without parser) took 16836.62 ms. Allocated memory was 151.0 MB in the beginning and 184.5 MB in the end (delta: 33.6 MB). Free memory was 126.3 MB in the beginning and 88.5 MB in the end (delta: 37.8 MB). Peak memory consumption was 72.0 MB. Max. memory is 8.0 GB. [2021-10-06 20:58:11,225 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory was 122.5 MB in the beginning and 122.4 MB in the end (delta: 84.4 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-10-06 20:58:11,226 INFO L168 Benchmark]: CACSL2BoogieTranslator took 276.44 ms. Allocated memory is still 151.0 MB. Free memory was 126.0 MB in the beginning and 115.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-10-06 20:58:11,226 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.96 ms. Allocated memory is still 151.0 MB. Free memory was 115.3 MB in the beginning and 113.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-06 20:58:11,226 INFO L168 Benchmark]: Boogie Preprocessor took 34.41 ms. Allocated memory is still 151.0 MB. Free memory was 113.5 MB in the beginning and 112.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-06 20:58:11,227 INFO L168 Benchmark]: RCFGBuilder took 626.61 ms. Allocated memory is still 151.0 MB. Free memory was 112.3 MB in the beginning and 99.8 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-10-06 20:58:11,227 INFO L168 Benchmark]: TraceAbstraction took 15805.64 ms. Allocated memory was 151.0 MB in the beginning and 184.5 MB in the end (delta: 33.6 MB). Free memory was 133.1 MB in the beginning and 88.5 MB in the end (delta: 44.6 MB). Peak memory consumption was 78.1 MB. Max. memory is 8.0 GB. [2021-10-06 20:58:11,230 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory was 122.5 MB in the beginning and 122.4 MB in the end (delta: 84.4 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 276.44 ms. Allocated memory is still 151.0 MB. Free memory was 126.0 MB in the beginning and 115.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 50.96 ms. Allocated memory is still 151.0 MB. Free memory was 115.3 MB in the beginning and 113.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 34.41 ms. Allocated memory is still 151.0 MB. Free memory was 113.5 MB in the beginning and 112.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 626.61 ms. Allocated memory is still 151.0 MB. Free memory was 112.3 MB in the beginning and 99.8 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 15805.64 ms. Allocated memory was 151.0 MB in the beginning and 184.5 MB in the end (delta: 33.6 MB). Free memory was 133.1 MB in the beginning and 88.5 MB in the end (delta: 44.6 MB). Peak memory consumption was 78.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6168.7ms, 106 PlacesBefore, 46 PlacesAfterwards, 104 TransitionsBefore, 42 TransitionsAfterwards, 1720 CoEnabledTransitionPairs, 10 FixpointIterations, 47 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 14 ConcurrentYvCompositions, 2 ChoiceCompositions, 104 TotalNumberOfCompositions, 8112 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3910, positive: 3593, positive conditional: 0, positive unconditional: 3593, negative: 317, negative conditional: 0, negative unconditional: 317, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1437, positive: 1386, positive conditional: 0, positive unconditional: 1386, negative: 51, negative conditional: 0, negative unconditional: 51, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1437, positive: 1355, positive conditional: 0, positive unconditional: 1355, negative: 82, negative conditional: 0, negative unconditional: 82, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 82, positive: 31, positive conditional: 0, positive unconditional: 31, negative: 51, negative conditional: 0, negative unconditional: 51, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 181, positive: 21, positive conditional: 0, positive unconditional: 21, negative: 159, negative conditional: 0, negative unconditional: 159, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3910, positive: 2207, positive conditional: 0, positive unconditional: 2207, negative: 266, negative conditional: 0, negative unconditional: 266, unknown: 1437, unknown conditional: 0, unknown unconditional: 1437] , Statistics on independence cache: Total cache size (in pairs): 247, Positive cache size: 220, Positive conditional cache size: 0, Positive unconditional cache size: 220, Negative cache size: 27, Negative conditional cache size: 0, Negative unconditional cache size: 27 - 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: 70]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 70]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 71]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 71]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 72]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 72]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 73]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 73]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 76]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 66]: 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, 140 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 15551.4ms, OverallIterations: 12, TraceHistogramMax: 1, EmptinessCheckTime: 23.3ms, AutomataDifference: 1461.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 6275.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 422 SDtfs, 986 SDslu, 987 SDs, 0 SdLazy, 404 SolverSat, 84 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 536.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 422 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 1657.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=487occurred in iteration=0, InterpolantAutomatonStates: 68, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 232.5ms AutomataMinimizationTime, 12 MinimizatonAttempts, 382 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 115.0ms SsaConstructionTime, 370.7ms SatisfiabilityAnalysisTime, 3785.0ms InterpolantComputationTime, 206 NumberOfCodeBlocks, 206 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 388 ConstructedInterpolants, 4 QuantifiedInterpolants, 1860 SizeOfPredicates, 50 NumberOfNonLiveVariables, 782 ConjunctsInSsa, 66 ConjunctsInUnsatCore, 24 InterpolantComputations, 24 PerfectInterpolantSequences, 0/0 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! [2021-10-06 20:58:11,284 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...