/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Overflow-32bit-Automizer_Default.epf -i ../sv-benchmarks/c/weaver/array-eq-symm.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-07 14:52:57,626 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-07 14:52:57,629 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-07 14:52:57,668 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-07 14:52:57,733 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-07 14:52:57,735 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-07 14:52:57,736 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-07 14:52:57,740 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-10-07 14:52:57,782 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-07 14:52:57,783 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-07 14:52:57,783 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-07 14:52:57,783 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-07 14:52:57,785 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-07 14:52:57,785 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-07 14:52:57,785 INFO L138 SettingsManager]: * Use SBE=true [2021-10-07 14:52:57,786 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-07 14:52:57,786 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-07 14:52:57,786 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-07 14:52:57,786 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-07 14:52:57,787 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-07 14:52:57,787 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-07 14:52:57,787 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-07 14:52:57,787 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-07 14:52:57,787 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-07 14:52:57,788 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-07 14:52:57,788 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-07 14:52:57,788 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-07 14:52:57,788 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-07 14:52:57,788 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-07 14:52:57,789 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-07 14:52:57,789 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-07 14:52:57,789 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-07 14:52:57,789 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-07 14:52:57,790 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-07 14:52:57,790 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-07 14:52:57,790 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-07 14:52:57,790 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-07 14:52:57,791 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-07 14:52:57,791 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-07 14:52:57,791 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-07 14:52:57,791 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-07 14:52:58,267 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-07 14:52:58,314 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-07 14:52:58,317 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-07 14:52:58,319 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-07 14:52:58,320 INFO L275 PluginConnector]: CDTParser initialized [2021-10-07 14:52:58,321 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/array-eq-symm.wvr.c [2021-10-07 14:52:58,407 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/628343c38/b38717fcca514f66b96d11a0b4e43bc9/FLAG431418a56 [2021-10-07 14:52:59,109 INFO L306 CDTParser]: Found 1 translation units. [2021-10-07 14:52:59,110 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/array-eq-symm.wvr.c [2021-10-07 14:52:59,124 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/628343c38/b38717fcca514f66b96d11a0b4e43bc9/FLAG431418a56 [2021-10-07 14:52:59,439 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/628343c38/b38717fcca514f66b96d11a0b4e43bc9 [2021-10-07 14:52:59,443 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-07 14:52:59,480 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-07 14:52:59,484 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-07 14:52:59,484 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-07 14:52:59,488 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-07 14:52:59,490 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 02:52:59" (1/1) ... [2021-10-07 14:52:59,491 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e8d3c77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:52:59, skipping insertion in model container [2021-10-07 14:52:59,492 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 02:52:59" (1/1) ... [2021-10-07 14:52:59,502 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-07 14:52:59,530 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-07 14:52:59,741 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/array-eq-symm.wvr.c[2251,2264] [2021-10-07 14:52:59,748 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 14:52:59,757 INFO L203 MainTranslator]: Completed pre-run [2021-10-07 14:52:59,784 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/array-eq-symm.wvr.c[2251,2264] [2021-10-07 14:52:59,789 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 14:52:59,806 INFO L208 MainTranslator]: Completed translation [2021-10-07 14:52:59,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:52:59 WrapperNode [2021-10-07 14:52:59,807 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-07 14:52:59,808 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-07 14:52:59,808 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-07 14:52:59,808 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-07 14:52:59,817 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:52:59" (1/1) ... [2021-10-07 14:52:59,826 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:52:59" (1/1) ... [2021-10-07 14:52:59,854 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-07 14:52:59,855 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-07 14:52:59,855 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-07 14:52:59,855 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-07 14:52:59,865 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:52:59" (1/1) ... [2021-10-07 14:52:59,866 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:52:59" (1/1) ... [2021-10-07 14:52:59,869 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:52:59" (1/1) ... [2021-10-07 14:52:59,869 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:52:59" (1/1) ... [2021-10-07 14:52:59,878 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:52:59" (1/1) ... [2021-10-07 14:52:59,883 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:52:59" (1/1) ... [2021-10-07 14:52:59,885 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:52:59" (1/1) ... [2021-10-07 14:52:59,889 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-07 14:52:59,890 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-07 14:52:59,890 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-07 14:52:59,890 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-07 14:52:59,891 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:52:59" (1/1) ... [2021-10-07 14:52:59,904 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-07 14:52:59,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:52:59,947 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-07 14:52:59,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-07 14:53:00,059 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-07 14:53:00,059 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-07 14:53:00,060 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-07 14:53:00,060 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-07 14:53:00,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-07 14:53:00,060 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-07 14:53:00,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-07 14:53:00,061 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-07 14:53:00,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-07 14:53:00,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-07 14:53:00,061 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-07 14:53:00,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-07 14:53:00,066 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-07 14:53:00,624 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-07 14:53:00,624 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2021-10-07 14:53:00,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 02:53:00 BoogieIcfgContainer [2021-10-07 14:53:00,627 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-07 14:53:00,629 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-07 14:53:00,629 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-07 14:53:00,633 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-07 14:53:00,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 02:52:59" (1/3) ... [2021-10-07 14:53:00,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40ba18eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 02:53:00, skipping insertion in model container [2021-10-07 14:53:00,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:52:59" (2/3) ... [2021-10-07 14:53:00,635 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40ba18eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 02:53:00, skipping insertion in model container [2021-10-07 14:53:00,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 02:53:00" (3/3) ... [2021-10-07 14:53:00,637 INFO L111 eAbstractionObserver]: Analyzing ICFG array-eq-symm.wvr.c [2021-10-07 14:53:00,644 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-07 14:53:00,644 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-07 14:53:00,644 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2021-10-07 14:53:00,645 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-07 14:53:00,684 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:53:00,684 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:53:00,685 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:53:00,685 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:53:00,685 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:53:00,685 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:53:00,685 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:53:00,686 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:53:00,686 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:53:00,686 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:53:00,686 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:53:00,687 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:53:00,687 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:53:00,687 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:53:00,687 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:53:00,687 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:53:00,688 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:53:00,688 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:53:00,688 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:53:00,688 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:53:00,688 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:53:00,689 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:53:00,689 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:53:00,689 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:53:00,689 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:53:00,689 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:53:00,690 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:53:00,690 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:53:00,690 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:53:00,690 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:53:00,690 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:53:00,691 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:53:00,691 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:53:00,691 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:53:00,691 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:53:00,692 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:53:00,692 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:53:00,692 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:53:00,693 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:53:00,693 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:53:00,693 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:53:00,694 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:53:00,694 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:53:00,694 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:53:00,694 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:53:00,694 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:53:00,695 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:53:00,695 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:53:00,695 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:53:00,695 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:53:00,695 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:53:00,696 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:53:00,696 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:53:00,696 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:53:00,696 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:53:00,696 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:53:00,697 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:53:00,697 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:53:00,697 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:53:00,697 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:53:00,697 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:53:00,698 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:53:00,698 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:53:00,698 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:53:00,698 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:53:00,698 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:53:00,699 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:53:00,699 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:53:00,699 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:53:00,700 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:53:00,700 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:53:00,700 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:53:00,700 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:53:00,700 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:53:00,701 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:53:00,701 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:53:00,705 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:53:00,705 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:53:00,705 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:53:00,705 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:53:00,706 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:53:00,711 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:53:00,712 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:53:00,712 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:53:00,712 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:53:00,712 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:53:00,721 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-07 14:53:00,796 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-07 14:53:00,804 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=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-07 14:53:00,804 INFO L340 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2021-10-07 14:53:00,825 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-07 14:53:00,838 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 163 places, 171 transitions, 358 flow [2021-10-07 14:53:00,841 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 163 places, 171 transitions, 358 flow [2021-10-07 14:53:00,844 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 163 places, 171 transitions, 358 flow [2021-10-07 14:53:00,924 INFO L129 PetriNetUnfolder]: 15/169 cut-off events. [2021-10-07 14:53:00,924 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-07 14:53:00,930 INFO L84 FinitePrefix]: Finished finitePrefix Result has 178 conditions, 169 events. 15/169 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 165 event pairs, 0 based on Foata normal form. 0/146 useless extension candidates. Maximal degree in co-relation 128. Up to 3 conditions per place. [2021-10-07 14:53:00,935 INFO L116 LiptonReduction]: Number of co-enabled transitions 1400 [2021-10-07 14:53:07,966 INFO L131 LiptonReduction]: Checked pairs total: 2067 [2021-10-07 14:53:07,967 INFO L133 LiptonReduction]: Total number of compositions: 193 [2021-10-07 14:53:07,977 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 29 transitions, 74 flow [2021-10-07 14:53:07,995 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 62 states, 50 states have (on average 2.9) internal successors, (145), 61 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:53:07,998 INFO L276 IsEmpty]: Start isEmpty. Operand has 62 states, 50 states have (on average 2.9) internal successors, (145), 61 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:53:08,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-07 14:53:08,005 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:53:08,005 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-07 14:53:08,006 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-10-07 14:53:08,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:53:08,013 INFO L82 PathProgramCache]: Analyzing trace with hash 21467, now seen corresponding path program 1 times [2021-10-07 14:53:08,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:53:08,025 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812326990] [2021-10-07 14:53:08,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:53:08,027 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:53:08,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:53:08,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:53:08,235 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:53:08,236 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812326990] [2021-10-07 14:53:08,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812326990] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:53:08,237 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:53:08,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-07 14:53:08,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6994576] [2021-10-07 14:53:08,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 14:53:08,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:53:08,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 14:53:08,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 14:53:08,281 INFO L87 Difference]: Start difference. First operand has 62 states, 50 states have (on average 2.9) internal successors, (145), 61 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:53:08,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:53:08,362 INFO L93 Difference]: Finished difference Result 119 states and 285 transitions. [2021-10-07 14:53:08,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 14:53:08,365 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2021-10-07 14:53:08,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:53:08,383 INFO L225 Difference]: With dead ends: 119 [2021-10-07 14:53:08,383 INFO L226 Difference]: Without dead ends: 119 [2021-10-07 14:53:08,385 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 14:53:08,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-10-07 14:53:08,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 64. [2021-10-07 14:53:08,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 52 states have (on average 2.8653846153846154) internal successors, (149), 63 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:53:08,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 149 transitions. [2021-10-07 14:53:08,449 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 149 transitions. Word has length 2 [2021-10-07 14:53:08,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:53:08,450 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 149 transitions. [2021-10-07 14:53:08,451 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:53:08,451 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 149 transitions. [2021-10-07 14:53:08,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-07 14:53:08,452 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:53:08,452 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-07 14:53:08,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-07 14:53:08,452 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-10-07 14:53:08,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:53:08,453 INFO L82 PathProgramCache]: Analyzing trace with hash 666391, now seen corresponding path program 1 times [2021-10-07 14:53:08,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:53:08,454 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33250173] [2021-10-07 14:53:08,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:53:08,455 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:53:08,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:53:08,555 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:53:08,555 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:53:08,555 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33250173] [2021-10-07 14:53:08,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33250173] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:53:08,556 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1929884738] [2021-10-07 14:53:08,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:53:08,557 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:53:08,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:53:08,559 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 14:53:08,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-07 14:53:08,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:53:08,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 14:53:08,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:53:08,677 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:53:08,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1929884738] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:53:08,678 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:53:08,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 3 [2021-10-07 14:53:08,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093515122] [2021-10-07 14:53:08,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-07 14:53:08,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:53:08,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-07 14:53:08,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-07 14:53:08,681 INFO L87 Difference]: Start difference. First operand 64 states and 149 transitions. Second operand has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:53:08,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:53:08,737 INFO L93 Difference]: Finished difference Result 176 states and 427 transitions. [2021-10-07 14:53:08,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 14:53:08,738 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 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 3 [2021-10-07 14:53:08,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:53:08,741 INFO L225 Difference]: With dead ends: 176 [2021-10-07 14:53:08,741 INFO L226 Difference]: Without dead ends: 176 [2021-10-07 14:53:08,742 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.8ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-07 14:53:08,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2021-10-07 14:53:08,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 66. [2021-10-07 14:53:08,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 54 states have (on average 2.8703703703703702) internal successors, (155), 65 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:53:08,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 155 transitions. [2021-10-07 14:53:08,755 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 155 transitions. Word has length 3 [2021-10-07 14:53:08,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:53:08,756 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 155 transitions. [2021-10-07 14:53:08,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:53:08,756 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 155 transitions. [2021-10-07 14:53:08,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-07 14:53:08,757 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:53:08,757 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-07 14:53:08,805 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-07 14:53:08,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:53:08,973 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-10-07 14:53:08,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:53:08,975 INFO L82 PathProgramCache]: Analyzing trace with hash 666392, now seen corresponding path program 1 times [2021-10-07 14:53:08,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:53:08,976 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696964794] [2021-10-07 14:53:08,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:53:08,976 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:53:09,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:53:09,057 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:53:09,058 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:53:09,058 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696964794] [2021-10-07 14:53:09,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696964794] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:53:09,059 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468944282] [2021-10-07 14:53:09,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:53:09,059 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:53:09,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:53:09,061 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 14:53:09,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-07 14:53:09,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:53:09,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 14:53:09,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:53:09,135 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:53:09,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [468944282] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:53:09,136 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 14:53:09,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2021-10-07 14:53:09,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739253672] [2021-10-07 14:53:09,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 14:53:09,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:53:09,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 14:53:09,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-07 14:53:09,139 INFO L87 Difference]: Start difference. First operand 66 states and 155 transitions. Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:53:09,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:53:09,172 INFO L93 Difference]: Finished difference Result 119 states and 287 transitions. [2021-10-07 14:53:09,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 14:53:09,174 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-07 14:53:09,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:53:09,177 INFO L225 Difference]: With dead ends: 119 [2021-10-07 14:53:09,177 INFO L226 Difference]: Without dead ends: 119 [2021-10-07 14:53:09,178 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-07 14:53:09,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-10-07 14:53:09,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 64. [2021-10-07 14:53:09,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 54 states have (on average 2.7962962962962963) internal successors, (151), 63 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:53:09,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 151 transitions. [2021-10-07 14:53:09,189 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 151 transitions. Word has length 3 [2021-10-07 14:53:09,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:53:09,189 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 151 transitions. [2021-10-07 14:53:09,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:53:09,190 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 151 transitions. [2021-10-07 14:53:09,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-07 14:53:09,190 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:53:09,191 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1] [2021-10-07 14:53:09,240 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-07 14:53:09,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:53:09,405 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-10-07 14:53:09,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:53:09,407 INFO L82 PathProgramCache]: Analyzing trace with hash 20659035, now seen corresponding path program 2 times [2021-10-07 14:53:09,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:53:09,408 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234164157] [2021-10-07 14:53:09,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:53:09,408 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:53:09,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:53:09,461 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:53:09,461 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:53:09,462 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234164157] [2021-10-07 14:53:09,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234164157] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:53:09,462 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484437844] [2021-10-07 14:53:09,463 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 14:53:09,463 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:53:09,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:53:09,464 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 14:53:09,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-07 14:53:09,520 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 14:53:09,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 14:53:09,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-07 14:53:09,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:53:09,543 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 14:53:09,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1484437844] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:53:09,544 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 14:53:09,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2021-10-07 14:53:09,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687006001] [2021-10-07 14:53:09,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 14:53:09,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:53:09,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 14:53:09,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-07 14:53:09,546 INFO L87 Difference]: Start difference. First operand 64 states and 151 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:53:09,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:53:09,560 INFO L93 Difference]: Finished difference Result 63 states and 150 transitions. [2021-10-07 14:53:09,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 14:53:09,560 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 4 [2021-10-07 14:53:09,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:53:09,562 INFO L225 Difference]: With dead ends: 63 [2021-10-07 14:53:09,562 INFO L226 Difference]: Without dead ends: 63 [2021-10-07 14:53:09,563 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 10.8ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-07 14:53:09,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-10-07 14:53:09,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 61. [2021-10-07 14:53:09,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 52 states have (on average 2.8076923076923075) internal successors, (146), 60 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:53:09,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 146 transitions. [2021-10-07 14:53:09,571 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 146 transitions. Word has length 4 [2021-10-07 14:53:09,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:53:09,571 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 146 transitions. [2021-10-07 14:53:09,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:53:09,572 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 146 transitions. [2021-10-07 14:53:09,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-07 14:53:09,573 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:53:09,573 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1] [2021-10-07 14:53:09,610 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-07 14:53:09,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:53:09,788 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-10-07 14:53:09,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:53:09,789 INFO L82 PathProgramCache]: Analyzing trace with hash 641249237, now seen corresponding path program 1 times [2021-10-07 14:53:09,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:53:09,790 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96237146] [2021-10-07 14:53:09,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:53:09,791 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:53:09,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:53:09,882 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:53:09,882 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:53:09,883 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96237146] [2021-10-07 14:53:09,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96237146] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:53:09,883 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [570536795] [2021-10-07 14:53:09,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:53:09,884 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:53:09,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:53:09,885 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 14:53:09,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-07 14:53:09,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:53:09,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-07 14:53:09,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:53:09,976 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:53:09,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [570536795] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:53:09,977 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:53:09,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-10-07 14:53:09,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228803811] [2021-10-07 14:53:09,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-07 14:53:09,979 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:53:09,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-07 14:53:09,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-07 14:53:09,981 INFO L87 Difference]: Start difference. First operand 61 states and 146 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:53:10,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:53:10,044 INFO L93 Difference]: Finished difference Result 230 states and 562 transitions. [2021-10-07 14:53:10,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 14:53:10,045 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-07 14:53:10,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:53:10,049 INFO L225 Difference]: With dead ends: 230 [2021-10-07 14:53:10,050 INFO L226 Difference]: Without dead ends: 230 [2021-10-07 14:53:10,050 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 13.3ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-07 14:53:10,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2021-10-07 14:53:10,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 62. [2021-10-07 14:53:10,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 53 states have (on average 2.792452830188679) internal successors, (148), 61 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:53:10,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 148 transitions. [2021-10-07 14:53:10,073 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 148 transitions. Word has length 5 [2021-10-07 14:53:10,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:53:10,073 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 148 transitions. [2021-10-07 14:53:10,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:53:10,095 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 148 transitions. [2021-10-07 14:53:10,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-07 14:53:10,096 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:53:10,096 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1] [2021-10-07 14:53:10,137 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-07 14:53:10,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:53:10,297 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-10-07 14:53:10,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:53:10,298 INFO L82 PathProgramCache]: Analyzing trace with hash -1596108575, now seen corresponding path program 2 times [2021-10-07 14:53:10,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:53:10,298 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006950693] [2021-10-07 14:53:10,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:53:10,299 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:53:10,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:53:10,368 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:53:10,368 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:53:10,369 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006950693] [2021-10-07 14:53:10,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006950693] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:53:10,369 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [810073812] [2021-10-07 14:53:10,369 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 14:53:10,370 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:53:10,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:53:10,371 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 14:53:10,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-07 14:53:10,441 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 14:53:10,441 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 14:53:10,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-07 14:53:10,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:53:10,475 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 14:53:10,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [810073812] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:53:10,476 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 14:53:10,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 7 [2021-10-07 14:53:10,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089782414] [2021-10-07 14:53:10,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 14:53:10,477 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:53:10,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 14:53:10,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-07 14:53:10,478 INFO L87 Difference]: Start difference. First operand 62 states and 148 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:53:10,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:53:10,515 INFO L93 Difference]: Finished difference Result 49 states and 116 transitions. [2021-10-07 14:53:10,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 14:53:10,516 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-07 14:53:10,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:53:10,517 INFO L225 Difference]: With dead ends: 49 [2021-10-07 14:53:10,517 INFO L226 Difference]: Without dead ends: 49 [2021-10-07 14:53:10,517 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 28.7ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-10-07 14:53:10,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-10-07 14:53:10,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 46. [2021-10-07 14:53:10,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 41 states have (on average 2.682926829268293) internal successors, (110), 45 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:53:10,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 110 transitions. [2021-10-07 14:53:10,522 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 110 transitions. Word has length 6 [2021-10-07 14:53:10,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:53:10,522 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 110 transitions. [2021-10-07 14:53:10,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:53:10,523 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 110 transitions. [2021-10-07 14:53:10,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-07 14:53:10,523 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:53:10,524 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-07 14:53:10,563 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-07 14:53:10,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:53:10,740 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-10-07 14:53:10,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:53:10,741 INFO L82 PathProgramCache]: Analyzing trace with hash -1596436758, now seen corresponding path program 1 times [2021-10-07 14:53:10,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:53:10,742 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252937228] [2021-10-07 14:53:10,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:53:10,743 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:53:10,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:53:10,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:53:10,776 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:53:10,776 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252937228] [2021-10-07 14:53:10,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252937228] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:53:10,777 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:53:10,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-07 14:53:10,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114490327] [2021-10-07 14:53:10,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 14:53:10,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:53:10,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 14:53:10,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 14:53:10,779 INFO L87 Difference]: Start difference. First operand 46 states and 110 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:53:10,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:53:10,792 INFO L93 Difference]: Finished difference Result 72 states and 176 transitions. [2021-10-07 14:53:10,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 14:53:10,793 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 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 6 [2021-10-07 14:53:10,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:53:10,794 INFO L225 Difference]: With dead ends: 72 [2021-10-07 14:53:10,794 INFO L226 Difference]: Without dead ends: 72 [2021-10-07 14:53:10,794 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 14:53:10,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-10-07 14:53:10,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 62. [2021-10-07 14:53:10,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 57 states have (on average 2.807017543859649) internal successors, (160), 61 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:53:10,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 160 transitions. [2021-10-07 14:53:10,804 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 160 transitions. Word has length 6 [2021-10-07 14:53:10,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:53:10,804 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 160 transitions. [2021-10-07 14:53:10,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:53:10,805 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 160 transitions. [2021-10-07 14:53:10,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-07 14:53:10,805 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:53:10,806 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:53:10,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-07 14:53:10,808 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-10-07 14:53:10,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:53:10,808 INFO L82 PathProgramCache]: Analyzing trace with hash 2050149117, now seen corresponding path program 1 times [2021-10-07 14:53:10,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:53:10,809 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311798509] [2021-10-07 14:53:10,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:53:10,809 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:53:10,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:53:10,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:53:10,879 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:53:10,879 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311798509] [2021-10-07 14:53:10,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311798509] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:53:10,879 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:53:10,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-07 14:53:10,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749529319] [2021-10-07 14:53:10,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 14:53:10,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:53:10,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 14:53:10,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 14:53:10,881 INFO L87 Difference]: Start difference. First operand 62 states and 160 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:53:10,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:53:10,889 INFO L93 Difference]: Finished difference Result 90 states and 235 transitions. [2021-10-07 14:53:10,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 14:53:10,889 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-07 14:53:10,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:53:10,891 INFO L225 Difference]: With dead ends: 90 [2021-10-07 14:53:10,894 INFO L226 Difference]: Without dead ends: 90 [2021-10-07 14:53:10,900 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 14:53:10,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-10-07 14:53:10,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 78. [2021-10-07 14:53:10,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 73 states have (on average 2.9726027397260273) internal successors, (217), 77 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:53:10,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 217 transitions. [2021-10-07 14:53:10,914 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 217 transitions. Word has length 7 [2021-10-07 14:53:10,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:53:10,917 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 217 transitions. [2021-10-07 14:53:10,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:53:10,918 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 217 transitions. [2021-10-07 14:53:10,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-07 14:53:10,919 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:53:10,919 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:53:10,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-07 14:53:10,920 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-10-07 14:53:10,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:53:10,920 INFO L82 PathProgramCache]: Analyzing trace with hash -869886226, now seen corresponding path program 1 times [2021-10-07 14:53:10,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:53:10,921 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906141653] [2021-10-07 14:53:10,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:53:10,921 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:53:10,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:53:11,011 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:53:11,011 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:53:11,012 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906141653] [2021-10-07 14:53:11,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906141653] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:53:11,013 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:53:11,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-07 14:53:11,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823950705] [2021-10-07 14:53:11,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 14:53:11,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:53:11,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 14:53:11,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-07 14:53:11,019 INFO L87 Difference]: Start difference. First operand 78 states and 217 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:53:11,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:53:11,054 INFO L93 Difference]: Finished difference Result 123 states and 315 transitions. [2021-10-07 14:53:11,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 14:53:11,055 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-07 14:53:11,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:53:11,056 INFO L225 Difference]: With dead ends: 123 [2021-10-07 14:53:11,056 INFO L226 Difference]: Without dead ends: 117 [2021-10-07 14:53:11,057 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.0ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-07 14:53:11,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-10-07 14:53:11,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 105. [2021-10-07 14:53:11,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 100 states have (on average 2.76) internal successors, (276), 104 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:53:11,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 276 transitions. [2021-10-07 14:53:11,064 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 276 transitions. Word has length 8 [2021-10-07 14:53:11,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:53:11,064 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 276 transitions. [2021-10-07 14:53:11,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:53:11,065 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 276 transitions. [2021-10-07 14:53:11,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-07 14:53:11,066 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:53:11,066 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2021-10-07 14:53:11,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-07 14:53:11,066 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-10-07 14:53:11,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:53:11,067 INFO L82 PathProgramCache]: Analyzing trace with hash -872349431, now seen corresponding path program 1 times [2021-10-07 14:53:11,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:53:11,067 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815310376] [2021-10-07 14:53:11,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:53:11,068 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:53:11,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:53:11,116 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 14:53:11,116 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:53:11,117 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815310376] [2021-10-07 14:53:11,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815310376] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:53:11,117 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:53:11,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-07 14:53:11,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545823620] [2021-10-07 14:53:11,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 14:53:11,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:53:11,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 14:53:11,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-07 14:53:11,119 INFO L87 Difference]: Start difference. First operand 105 states and 276 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:53:11,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:53:11,156 INFO L93 Difference]: Finished difference Result 87 states and 228 transitions. [2021-10-07 14:53:11,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 14:53:11,157 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-07 14:53:11,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:53:11,158 INFO L225 Difference]: With dead ends: 87 [2021-10-07 14:53:11,158 INFO L226 Difference]: Without dead ends: 79 [2021-10-07 14:53:11,158 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.9ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-07 14:53:11,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-10-07 14:53:11,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2021-10-07 14:53:11,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 74 states have (on average 2.945945945945946) internal successors, (218), 78 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:53:11,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 218 transitions. [2021-10-07 14:53:11,163 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 218 transitions. Word has length 8 [2021-10-07 14:53:11,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:53:11,164 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 218 transitions. [2021-10-07 14:53:11,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:53:11,164 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 218 transitions. [2021-10-07 14:53:11,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-07 14:53:11,165 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:53:11,165 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:53:11,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-07 14:53:11,166 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-10-07 14:53:11,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:53:11,166 INFO L82 PathProgramCache]: Analyzing trace with hash -1557589718, now seen corresponding path program 1 times [2021-10-07 14:53:11,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:53:11,167 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200122108] [2021-10-07 14:53:11,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:53:11,167 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:53:11,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:53:11,222 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 14:53:11,222 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:53:11,222 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200122108] [2021-10-07 14:53:11,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200122108] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:53:11,223 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:53:11,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-07 14:53:11,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425874638] [2021-10-07 14:53:11,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-07 14:53:11,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:53:11,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-07 14:53:11,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-07 14:53:11,224 INFO L87 Difference]: Start difference. First operand 79 states and 218 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:53:11,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:53:11,269 INFO L93 Difference]: Finished difference Result 135 states and 332 transitions. [2021-10-07 14:53:11,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 14:53:11,269 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-07 14:53:11,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:53:11,271 INFO L225 Difference]: With dead ends: 135 [2021-10-07 14:53:11,271 INFO L226 Difference]: Without dead ends: 129 [2021-10-07 14:53:11,271 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.6ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-07 14:53:11,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-10-07 14:53:11,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 105. [2021-10-07 14:53:11,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 100 states have (on average 2.75) internal successors, (275), 104 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:53:11,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 275 transitions. [2021-10-07 14:53:11,277 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 275 transitions. Word has length 9 [2021-10-07 14:53:11,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:53:11,278 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 275 transitions. [2021-10-07 14:53:11,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:53:11,278 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 275 transitions. [2021-10-07 14:53:11,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-07 14:53:11,279 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:53:11,279 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:53:11,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-07 14:53:11,280 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-10-07 14:53:11,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:53:11,280 INFO L82 PathProgramCache]: Analyzing trace with hash -1560052923, now seen corresponding path program 1 times [2021-10-07 14:53:11,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:53:11,281 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517785513] [2021-10-07 14:53:11,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:53:11,281 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:53:11,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:53:11,332 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-07 14:53:11,333 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:53:11,333 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517785513] [2021-10-07 14:53:11,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517785513] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:53:11,333 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:53:11,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-07 14:53:11,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687103165] [2021-10-07 14:53:11,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-07 14:53:11,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:53:11,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-07 14:53:11,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-07 14:53:11,335 INFO L87 Difference]: Start difference. First operand 105 states and 275 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:53:11,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:53:11,382 INFO L93 Difference]: Finished difference Result 101 states and 250 transitions. [2021-10-07 14:53:11,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 14:53:11,382 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-07 14:53:11,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:53:11,383 INFO L225 Difference]: With dead ends: 101 [2021-10-07 14:53:11,384 INFO L226 Difference]: Without dead ends: 94 [2021-10-07 14:53:11,384 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.3ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-07 14:53:11,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-10-07 14:53:11,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 80. [2021-10-07 14:53:11,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 75 states have (on average 2.92) internal successors, (219), 79 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:53:11,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 219 transitions. [2021-10-07 14:53:11,388 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 219 transitions. Word has length 9 [2021-10-07 14:53:11,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:53:11,389 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 219 transitions. [2021-10-07 14:53:11,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:53:11,389 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 219 transitions. [2021-10-07 14:53:11,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-07 14:53:11,390 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:53:11,390 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:53:11,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-07 14:53:11,390 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-10-07 14:53:11,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:53:11,391 INFO L82 PathProgramCache]: Analyzing trace with hash -242968666, now seen corresponding path program 1 times [2021-10-07 14:53:11,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:53:11,391 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747836472] [2021-10-07 14:53:11,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:53:11,392 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:53:11,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:53:11,430 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-07 14:53:11,431 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:53:11,431 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747836472] [2021-10-07 14:53:11,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747836472] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:53:11,431 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498790200] [2021-10-07 14:53:11,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:53:11,432 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:53:11,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:53:11,433 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 14:53:11,438 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-07 14:53:11,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:53:11,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 14:53:11,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:53:11,542 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-07 14:53:11,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1498790200] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:53:11,549 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 14:53:11,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2021-10-07 14:53:11,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521523283] [2021-10-07 14:53:11,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 14:53:11,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:53:11,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 14:53:11,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-07 14:53:11,551 INFO L87 Difference]: Start difference. First operand 80 states and 219 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:53:11,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:53:11,565 INFO L93 Difference]: Finished difference Result 76 states and 192 transitions. [2021-10-07 14:53:11,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 14:53:11,566 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 10 [2021-10-07 14:53:11,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:53:11,567 INFO L225 Difference]: With dead ends: 76 [2021-10-07 14:53:11,567 INFO L226 Difference]: Without dead ends: 66 [2021-10-07 14:53:11,567 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-07 14:53:11,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-10-07 14:53:11,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 42. [2021-10-07 14:53:11,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 40 states have (on average 2.3) internal successors, (92), 41 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:53:11,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 92 transitions. [2021-10-07 14:53:11,571 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 92 transitions. Word has length 10 [2021-10-07 14:53:11,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:53:11,571 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 92 transitions. [2021-10-07 14:53:11,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:53:11,571 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 92 transitions. [2021-10-07 14:53:11,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-07 14:53:11,573 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:53:11,573 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:53:11,620 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-07 14:53:11,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-10-07 14:53:11,787 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-10-07 14:53:11,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:53:11,788 INFO L82 PathProgramCache]: Analyzing trace with hash -245431871, now seen corresponding path program 1 times [2021-10-07 14:53:11,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:53:11,788 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645193342] [2021-10-07 14:53:11,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:53:11,789 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:53:11,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:53:11,852 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-07 14:53:11,852 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:53:11,855 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645193342] [2021-10-07 14:53:11,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645193342] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:53:11,855 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [781519065] [2021-10-07 14:53:11,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:53:11,855 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:53:11,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:53:11,857 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 14:53:11,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-07 14:53:11,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:53:11,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 14:53:11,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:53:12,061 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 14:53:12,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [781519065] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:53:12,062 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:53:12,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 5] total 7 [2021-10-07 14:53:12,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79114498] [2021-10-07 14:53:12,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 14:53:12,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:53:12,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 14:53:12,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-07 14:53:12,064 INFO L87 Difference]: Start difference. First operand 42 states and 92 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:53:12,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:53:12,155 INFO L93 Difference]: Finished difference Result 58 states and 120 transitions. [2021-10-07 14:53:12,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-07 14:53:12,156 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-07 14:53:12,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:53:12,156 INFO L225 Difference]: With dead ends: 58 [2021-10-07 14:53:12,156 INFO L226 Difference]: Without dead ends: 37 [2021-10-07 14:53:12,157 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 57.4ms TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-10-07 14:53:12,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-10-07 14:53:12,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-10-07 14:53:12,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 2.1944444444444446) internal successors, (79), 36 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:53:12,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 79 transitions. [2021-10-07 14:53:12,159 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 79 transitions. Word has length 10 [2021-10-07 14:53:12,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:53:12,159 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 79 transitions. [2021-10-07 14:53:12,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:53:12,160 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 79 transitions. [2021-10-07 14:53:12,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-07 14:53:12,160 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:53:12,160 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:53:12,198 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-07 14:53:12,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-10-07 14:53:12,370 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-10-07 14:53:12,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:53:12,370 INFO L82 PathProgramCache]: Analyzing trace with hash 296475902, now seen corresponding path program 1 times [2021-10-07 14:53:12,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:53:12,371 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606596993] [2021-10-07 14:53:12,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:53:12,372 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:53:12,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:53:12,404 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-07 14:53:12,405 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:53:12,405 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606596993] [2021-10-07 14:53:12,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606596993] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:53:12,405 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1320204362] [2021-10-07 14:53:12,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:53:12,406 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:53:12,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:53:12,407 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 14:53:12,428 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-07 14:53:12,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:53:12,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 14:53:12,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:53:12,602 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 14:53:12,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1320204362] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:53:12,603 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:53:12,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 6] total 8 [2021-10-07 14:53:12,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310526221] [2021-10-07 14:53:12,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-07 14:53:12,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:53:12,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-07 14:53:12,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-10-07 14:53:12,604 INFO L87 Difference]: Start difference. First operand 37 states and 79 transitions. Second operand has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:53:12,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:53:12,715 INFO L93 Difference]: Finished difference Result 69 states and 146 transitions. [2021-10-07 14:53:12,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-07 14:53:12,716 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-07 14:53:12,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:53:12,716 INFO L225 Difference]: With dead ends: 69 [2021-10-07 14:53:12,716 INFO L226 Difference]: Without dead ends: 50 [2021-10-07 14:53:12,717 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 106.7ms TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2021-10-07 14:53:12,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-10-07 14:53:12,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-10-07 14:53:12,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 2.204081632653061) internal successors, (108), 49 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:53:12,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 108 transitions. [2021-10-07 14:53:12,720 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 108 transitions. Word has length 11 [2021-10-07 14:53:12,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:53:12,720 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 108 transitions. [2021-10-07 14:53:12,720 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:53:12,720 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 108 transitions. [2021-10-07 14:53:12,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-07 14:53:12,721 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:53:12,721 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1] [2021-10-07 14:53:12,756 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-07 14:53:12,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-10-07 14:53:12,930 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-10-07 14:53:12,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:53:12,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1919548777, now seen corresponding path program 2 times [2021-10-07 14:53:12,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:53:12,932 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580744761] [2021-10-07 14:53:12,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:53:12,932 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:53:12,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:53:13,019 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 14:53:13,019 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:53:13,019 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580744761] [2021-10-07 14:53:13,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580744761] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:53:13,020 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769130599] [2021-10-07 14:53:13,020 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 14:53:13,020 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:53:13,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:53:13,021 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 14:53:13,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-07 14:53:13,115 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 14:53:13,115 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 14:53:13,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 14:53:13,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:53:13,163 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-07 14:53:13,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1769130599] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:53:13,163 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:53:13,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 2] total 10 [2021-10-07 14:53:13,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999451439] [2021-10-07 14:53:13,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-07 14:53:13,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:53:13,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-07 14:53:13,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-10-07 14:53:13,166 INFO L87 Difference]: Start difference. First operand 50 states and 108 transitions. Second operand has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:53:13,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:53:13,309 INFO L93 Difference]: Finished difference Result 76 states and 161 transitions. [2021-10-07 14:53:13,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-07 14:53:13,312 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-07 14:53:13,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:53:13,313 INFO L225 Difference]: With dead ends: 76 [2021-10-07 14:53:13,313 INFO L226 Difference]: Without dead ends: 0 [2021-10-07 14:53:13,313 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 96.9ms TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2021-10-07 14:53:13,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-07 14:53:13,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-07 14:53:13,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:53:13,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-07 14:53:13,314 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2021-10-07 14:53:13,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:53:13,314 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-07 14:53:13,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:53:13,315 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-07 14:53:13,315 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-07 14:53:13,319 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:53:13,320 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:53:13,320 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:53:13,320 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:53:13,320 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:53:13,321 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:53:13,321 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:53:13,322 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:53:13,322 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-07 14:53:13,322 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-07 14:53:13,322 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:53:13,322 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:53:13,323 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:53:13,323 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 14:53:13,355 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-10-07 14:53:13,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,10 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:53:13,533 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-07 14:53:13,533 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-07 14:53:13,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.10 02:53:13 BasicIcfg [2021-10-07 14:53:13,535 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-07 14:53:13,536 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-07 14:53:13,536 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-07 14:53:13,536 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-07 14:53:13,537 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 02:53:00" (3/4) ... [2021-10-07 14:53:13,540 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-07 14:53:13,547 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-10-07 14:53:13,547 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-10-07 14:53:13,554 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2021-10-07 14:53:13,554 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-07 14:53:13,555 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-07 14:53:13,555 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-07 14:53:13,600 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/weaver/array-eq-symm.wvr.c-witness.graphml [2021-10-07 14:53:13,600 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-07 14:53:13,602 INFO L168 Benchmark]: Toolchain (without parser) took 14156.26 ms. Allocated memory was 151.0 MB in the beginning and 211.8 MB in the end (delta: 60.8 MB). Free memory was 125.9 MB in the beginning and 140.6 MB in the end (delta: -14.8 MB). Peak memory consumption was 46.7 MB. Max. memory is 8.0 GB. [2021-10-07 14:53:13,602 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory is still 131.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-07 14:53:13,603 INFO L168 Benchmark]: CACSL2BoogieTranslator took 323.11 ms. Allocated memory is still 151.0 MB. Free memory was 125.5 MB in the beginning and 115.0 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-10-07 14:53:13,603 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.36 ms. Allocated memory is still 151.0 MB. Free memory was 115.0 MB in the beginning and 113.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-07 14:53:13,603 INFO L168 Benchmark]: Boogie Preprocessor took 34.11 ms. Allocated memory is still 151.0 MB. Free memory was 113.2 MB in the beginning and 111.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-07 14:53:13,604 INFO L168 Benchmark]: RCFGBuilder took 737.27 ms. Allocated memory is still 151.0 MB. Free memory was 111.7 MB in the beginning and 124.3 MB in the end (delta: -12.6 MB). Peak memory consumption was 11.8 MB. Max. memory is 8.0 GB. [2021-10-07 14:53:13,604 INFO L168 Benchmark]: TraceAbstraction took 12906.23 ms. Allocated memory was 151.0 MB in the beginning and 211.8 MB in the end (delta: 60.8 MB). Free memory was 123.9 MB in the beginning and 144.3 MB in the end (delta: -20.4 MB). Peak memory consumption was 40.1 MB. Max. memory is 8.0 GB. [2021-10-07 14:53:13,605 INFO L168 Benchmark]: Witness Printer took 64.41 ms. Allocated memory is still 211.8 MB. Free memory was 144.3 MB in the beginning and 140.6 MB in the end (delta: 3.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2021-10-07 14:53:13,607 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory is still 131.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 323.11 ms. Allocated memory is still 151.0 MB. Free memory was 125.5 MB in the beginning and 115.0 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 46.36 ms. Allocated memory is still 151.0 MB. Free memory was 115.0 MB in the beginning and 113.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 34.11 ms. Allocated memory is still 151.0 MB. Free memory was 113.2 MB in the beginning and 111.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 737.27 ms. Allocated memory is still 151.0 MB. Free memory was 111.7 MB in the beginning and 124.3 MB in the end (delta: -12.6 MB). Peak memory consumption was 11.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 12906.23 ms. Allocated memory was 151.0 MB in the beginning and 211.8 MB in the end (delta: 60.8 MB). Free memory was 123.9 MB in the beginning and 144.3 MB in the end (delta: -20.4 MB). Peak memory consumption was 40.1 MB. Max. memory is 8.0 GB. * Witness Printer took 64.41 ms. Allocated memory is still 211.8 MB. Free memory was 144.3 MB in the beginning and 140.6 MB in the end (delta: 3.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7125.7ms, 163 PlacesBefore, 31 PlacesAfterwards, 171 TransitionsBefore, 29 TransitionsAfterwards, 1400 CoEnabledTransitionPairs, 7 FixpointIterations, 105 TrivialSequentialCompositions, 46 ConcurrentSequentialCompositions, 25 TrivialYvCompositions, 7 ConcurrentYvCompositions, 10 ChoiceCompositions, 193 TotalNumberOfCompositions, 2067 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1685, positive: 1617, positive conditional: 0, positive unconditional: 1617, negative: 68, negative conditional: 0, negative unconditional: 68, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1037, positive: 1021, positive conditional: 0, positive unconditional: 1021, negative: 16, negative conditional: 0, negative unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1037, positive: 1021, positive conditional: 0, positive unconditional: 1021, negative: 16, negative conditional: 0, negative unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 16, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 16, negative conditional: 0, negative unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 47, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 47, negative conditional: 0, negative unconditional: 47, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1685, positive: 596, positive conditional: 0, positive unconditional: 596, negative: 52, negative conditional: 0, negative unconditional: 52, unknown: 1037, unknown conditional: 0, unknown unconditional: 1037] , Statistics on independence cache: Total cache size (in pairs): 59, Positive cache size: 54, Positive conditional cache size: 0, Positive unconditional cache size: 54, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5 - 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: 48]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 48]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 195 locations, 14 error locations. Started 1 CEGAR loops. OverallTime: 12735.2ms, OverallIterations: 16, TraceHistogramMax: 3, EmptinessCheckTime: 20.9ms, AutomataDifference: 947.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 7190.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 274 SDtfs, 556 SDslu, 368 SDs, 0 SdLazy, 398 SolverSat, 66 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 420.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 125 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 404.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=105occurred in iteration=9, InterpolantAutomatonStates: 79, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 155.8ms AutomataMinimizationTime, 16 MinimizatonAttempts, 489 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 124.8ms SsaConstructionTime, 480.4ms SatisfiabilityAnalysisTime, 1143.6ms InterpolantComputationTime, 181 NumberOfCodeBlocks, 168 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 156 ConstructedInterpolants, 0 QuantifiedInterpolants, 631 SizeOfPredicates, 13 NumberOfNonLiveVariables, 1012 ConjunctsInSsa, 49 ConjunctsInUnsatCore, 25 InterpolantComputations, 11 PerfectInterpolantSequences, 53/86 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 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-07 14:53:13,650 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...