/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/loop-tiling-eq.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-08 15:48:20,507 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-08 15:48:20,510 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-08 15:48:20,546 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-08 15:48:20,628 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-08 15:48:20,629 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-08 15:48:20,629 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-08 15:48:20,630 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-10-08 15:48:20,658 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-08 15:48:20,659 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-08 15:48:20,659 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-08 15:48:20,659 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-08 15:48:20,661 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-08 15:48:20,661 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-08 15:48:20,661 INFO L138 SettingsManager]: * Use SBE=true [2021-10-08 15:48:20,661 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-08 15:48:20,661 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-08 15:48:20,662 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-08 15:48:20,662 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-08 15:48:20,662 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-08 15:48:20,662 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-08 15:48:20,662 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-08 15:48:20,663 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-08 15:48:20,663 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-08 15:48:20,663 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-08 15:48:20,663 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-08 15:48:20,663 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-08 15:48:20,663 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-08 15:48:20,664 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-08 15:48:20,664 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-08 15:48:20,664 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-08 15:48:20,664 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-08 15:48:20,665 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-08 15:48:20,665 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-08 15:48:20,665 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-08 15:48:20,665 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-08 15:48:20,665 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-08 15:48:20,665 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-08 15:48:20,666 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-08 15:48:20,666 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-08 15:48:20,666 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-08 15:48:21,098 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-08 15:48:21,127 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-08 15:48:21,129 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-08 15:48:21,131 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-08 15:48:21,132 INFO L275 PluginConnector]: CDTParser initialized [2021-10-08 15:48:21,133 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c [2021-10-08 15:48:21,219 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/07da1b419/2a37bc9586dd415787ae7193466f3c47/FLAG755d6f04f [2021-10-08 15:48:21,943 INFO L306 CDTParser]: Found 1 translation units. [2021-10-08 15:48:21,943 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c [2021-10-08 15:48:21,955 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/07da1b419/2a37bc9586dd415787ae7193466f3c47/FLAG755d6f04f [2021-10-08 15:48:22,279 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/07da1b419/2a37bc9586dd415787ae7193466f3c47 [2021-10-08 15:48:22,282 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-08 15:48:22,292 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-08 15:48:22,294 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-08 15:48:22,294 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-08 15:48:22,298 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-08 15:48:22,299 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.10 03:48:22" (1/1) ... [2021-10-08 15:48:22,300 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ef2bbbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 03:48:22, skipping insertion in model container [2021-10-08 15:48:22,301 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.10 03:48:22" (1/1) ... [2021-10-08 15:48:22,309 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-08 15:48:22,329 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-08 15:48:22,560 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/loop-tiling-eq.wvr.c[2550,2563] [2021-10-08 15:48:22,581 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 15:48:22,596 INFO L203 MainTranslator]: Completed pre-run [2021-10-08 15:48:22,631 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/loop-tiling-eq.wvr.c[2550,2563] [2021-10-08 15:48:22,635 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 15:48:22,654 INFO L208 MainTranslator]: Completed translation [2021-10-08 15:48:22,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 03:48:22 WrapperNode [2021-10-08 15:48:22,655 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-08 15:48:22,656 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-08 15:48:22,656 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-08 15:48:22,656 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-08 15:48:22,667 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 03:48:22" (1/1) ... [2021-10-08 15:48:22,680 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 03:48:22" (1/1) ... [2021-10-08 15:48:22,723 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-08 15:48:22,724 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-08 15:48:22,724 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-08 15:48:22,724 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-08 15:48:22,735 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 03:48:22" (1/1) ... [2021-10-08 15:48:22,736 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 03:48:22" (1/1) ... [2021-10-08 15:48:22,741 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 03:48:22" (1/1) ... [2021-10-08 15:48:22,741 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 03:48:22" (1/1) ... [2021-10-08 15:48:22,752 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 03:48:22" (1/1) ... [2021-10-08 15:48:22,759 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 03:48:22" (1/1) ... [2021-10-08 15:48:22,763 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 03:48:22" (1/1) ... [2021-10-08 15:48:22,768 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-08 15:48:22,769 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-08 15:48:22,770 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-08 15:48:22,770 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-08 15:48:22,771 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 03:48:22" (1/1) ... [2021-10-08 15:48:22,782 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-08 15:48:22,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:48:22,820 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-08 15:48:22,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-08 15:48:22,931 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-08 15:48:22,932 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-08 15:48:22,932 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-08 15:48:22,932 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-08 15:48:22,932 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-08 15:48:22,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-08 15:48:22,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-08 15:48:22,933 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-08 15:48:22,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-08 15:48:22,933 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-08 15:48:22,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-08 15:48:22,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-08 15:48:22,934 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-08 15:48:22,934 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-08 15:48:22,936 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-08 15:48:23,611 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-08 15:48:23,612 INFO L299 CfgBuilder]: Removed 39 assume(true) statements. [2021-10-08 15:48:23,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 03:48:23 BoogieIcfgContainer [2021-10-08 15:48:23,615 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-08 15:48:23,617 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-08 15:48:23,617 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-08 15:48:23,621 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-08 15:48:23,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.10 03:48:22" (1/3) ... [2021-10-08 15:48:23,623 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@272e4fe1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.10 03:48:23, skipping insertion in model container [2021-10-08 15:48:23,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 03:48:22" (2/3) ... [2021-10-08 15:48:23,623 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@272e4fe1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.10 03:48:23, skipping insertion in model container [2021-10-08 15:48:23,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 03:48:23" (3/3) ... [2021-10-08 15:48:23,625 INFO L111 eAbstractionObserver]: Analyzing ICFG loop-tiling-eq.wvr.c [2021-10-08 15:48:23,633 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-08 15:48:23,633 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-08 15:48:23,633 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2021-10-08 15:48:23,634 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-08 15:48:23,689 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,690 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,690 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,690 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,691 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,691 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,691 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,691 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,691 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,692 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,692 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,692 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,692 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,693 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,693 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,693 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,694 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,694 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,694 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,733 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,734 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,734 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,734 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,734 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,738 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,742 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,742 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,742 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,743 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,743 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,743 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,743 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,744 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,744 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,744 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,744 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,744 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,745 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,746 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,746 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,746 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,747 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,747 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,747 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,747 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,747 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,747 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,748 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,748 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,748 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,748 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,748 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,749 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,749 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,749 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,749 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,750 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,750 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,750 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,750 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,750 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,750 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,751 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,751 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,751 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,751 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,751 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,752 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,752 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,752 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,752 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,752 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,753 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,753 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,753 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,753 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,753 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,754 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,754 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,754 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,754 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,754 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,755 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,755 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,755 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,755 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,755 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,756 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,756 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,756 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,756 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,756 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,757 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,757 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,757 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,757 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,757 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,758 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,758 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,758 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,758 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,759 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,759 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,759 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,759 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,759 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,759 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,760 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,760 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,760 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,760 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,760 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,761 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,761 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,761 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,761 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,761 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,761 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,762 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,762 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,762 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,762 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,762 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,762 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,763 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,763 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,763 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,763 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,763 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,764 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,764 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,764 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,764 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,765 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,765 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,765 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,765 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,765 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,766 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,766 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,769 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,769 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,769 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,769 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,769 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,773 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,774 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,774 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,774 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,774 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,775 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,775 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,775 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,775 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:48:23,781 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-08 15:48:23,843 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-08 15:48:23,851 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 [2021-10-08 15:48:23,852 INFO L340 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2021-10-08 15:48:23,874 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-08 15:48:23,887 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 276 places, 295 transitions, 606 flow [2021-10-08 15:48:23,891 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 276 places, 295 transitions, 606 flow [2021-10-08 15:48:23,893 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 276 places, 295 transitions, 606 flow [2021-10-08 15:48:24,017 INFO L129 PetriNetUnfolder]: 26/293 cut-off events. [2021-10-08 15:48:24,017 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-08 15:48:24,025 INFO L84 FinitePrefix]: Finished finitePrefix Result has 302 conditions, 293 events. 26/293 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 439 event pairs, 0 based on Foata normal form. 0/241 useless extension candidates. Maximal degree in co-relation 209. Up to 2 conditions per place. [2021-10-08 15:48:24,031 INFO L116 LiptonReduction]: Number of co-enabled transitions 1916 [2021-10-08 15:48:45,203 INFO L131 LiptonReduction]: Checked pairs total: 3741 [2021-10-08 15:48:45,204 INFO L133 LiptonReduction]: Total number of compositions: 351 [2021-10-08 15:48:45,216 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 56 places, 56 transitions, 128 flow [2021-10-08 15:48:45,242 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 231 states, 189 states have (on average 2.8624338624338623) internal successors, (541), 230 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:48:45,246 INFO L276 IsEmpty]: Start isEmpty. Operand has 231 states, 189 states have (on average 2.8624338624338623) internal successors, (541), 230 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:48:45,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2021-10-08 15:48:45,252 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:48:45,252 INFO L512 BasicCegarLoop]: trace histogram [1] [2021-10-08 15:48:45,253 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-08 15:48:45,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:48:45,259 INFO L82 PathProgramCache]: Analyzing trace with hash 1137, now seen corresponding path program 1 times [2021-10-08 15:48:45,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:48:45,271 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721430036] [2021-10-08 15:48:45,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:48:45,272 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:48:45,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:48:45,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 15:48:45,387 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:48:45,387 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721430036] [2021-10-08 15:48:45,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721430036] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:48:45,388 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:48:45,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2021-10-08 15:48:45,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963010250] [2021-10-08 15:48:45,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-08 15:48:45,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:48:45,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-08 15:48:45,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-08 15:48:45,415 INFO L87 Difference]: Start difference. First operand has 231 states, 189 states have (on average 2.8624338624338623) internal successors, (541), 230 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:48:45,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:48:45,443 INFO L93 Difference]: Finished difference Result 225 states and 535 transitions. [2021-10-08 15:48:45,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-08 15:48:45,445 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1 [2021-10-08 15:48:45,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:48:45,460 INFO L225 Difference]: With dead ends: 225 [2021-10-08 15:48:45,460 INFO L226 Difference]: Without dead ends: 225 [2021-10-08 15:48:45,462 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-08 15:48:45,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2021-10-08 15:48:45,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2021-10-08 15:48:45,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 189 states have (on average 2.8306878306878307) internal successors, (535), 224 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:48:45,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 535 transitions. [2021-10-08 15:48:45,528 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 535 transitions. Word has length 1 [2021-10-08 15:48:45,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:48:45,528 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 535 transitions. [2021-10-08 15:48:45,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:48:45,529 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 535 transitions. [2021-10-08 15:48:45,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-08 15:48:45,529 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:48:45,529 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-08 15:48:45,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-08 15:48:45,530 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-08 15:48:45,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:48:45,531 INFO L82 PathProgramCache]: Analyzing trace with hash 36380, now seen corresponding path program 1 times [2021-10-08 15:48:45,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:48:45,532 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905966180] [2021-10-08 15:48:45,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:48:45,532 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:48:45,547 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-08 15:48:45,548 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1199981551] [2021-10-08 15:48:45,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:48:45,548 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:48:45,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:48:45,550 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) [2021-10-08 15:48:45,559 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 [2021-10-08 15:48:45,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:48:45,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-08 15:48:45,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:48:45,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 15:48:45,689 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:48:45,690 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905966180] [2021-10-08 15:48:45,693 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-08 15:48:45,694 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1199981551] [2021-10-08 15:48:45,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1199981551] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:48:45,694 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:48:45,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-08 15:48:45,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493317430] [2021-10-08 15:48:45,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 15:48:45,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:48:45,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 15:48:45,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 15:48:45,700 INFO L87 Difference]: Start difference. First operand 225 states and 535 transitions. 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) [2021-10-08 15:48:45,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:48:45,774 INFO L93 Difference]: Finished difference Result 222 states and 532 transitions. [2021-10-08 15:48:45,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 15:48:45,775 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 [2021-10-08 15:48:45,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:48:45,779 INFO L225 Difference]: With dead ends: 222 [2021-10-08 15:48:45,780 INFO L226 Difference]: Without dead ends: 222 [2021-10-08 15:48:45,781 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 [2021-10-08 15:48:45,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2021-10-08 15:48:45,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2021-10-08 15:48:45,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 189 states have (on average 2.814814814814815) internal successors, (532), 221 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:48:45,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 532 transitions. [2021-10-08 15:48:45,805 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 532 transitions. Word has length 2 [2021-10-08 15:48:45,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:48:45,806 INFO L470 AbstractCegarLoop]: Abstraction has 222 states and 532 transitions. [2021-10-08 15:48:45,806 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) [2021-10-08 15:48:45,806 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 532 transitions. [2021-10-08 15:48:45,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-08 15:48:45,807 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:48:45,807 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-08 15:48:45,892 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-10-08 15:48:46,020 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 [2021-10-08 15:48:46,021 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-08 15:48:46,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:48:46,022 INFO L82 PathProgramCache]: Analyzing trace with hash 36379, now seen corresponding path program 1 times [2021-10-08 15:48:46,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:48:46,023 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292214177] [2021-10-08 15:48:46,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:48:46,023 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:48:46,034 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-08 15:48:46,035 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2078349555] [2021-10-08 15:48:46,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:48:46,035 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:48:46,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:48:46,041 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) [2021-10-08 15:48:46,063 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 [2021-10-08 15:48:46,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:48:46,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-08 15:48:46,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:48:46,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 15:48:46,139 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:48:46,140 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292214177] [2021-10-08 15:48:46,140 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-08 15:48:46,140 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2078349555] [2021-10-08 15:48:46,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2078349555] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:48:46,141 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:48:46,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-08 15:48:46,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295683981] [2021-10-08 15:48:46,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 15:48:46,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:48:46,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 15:48:46,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 15:48:46,145 INFO L87 Difference]: Start difference. First operand 222 states and 532 transitions. 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) [2021-10-08 15:48:46,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:48:46,245 INFO L93 Difference]: Finished difference Result 440 states and 1060 transitions. [2021-10-08 15:48:46,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 15:48:46,247 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 [2021-10-08 15:48:46,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:48:46,256 INFO L225 Difference]: With dead ends: 440 [2021-10-08 15:48:46,256 INFO L226 Difference]: Without dead ends: 440 [2021-10-08 15:48:46,256 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 15:48:46,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2021-10-08 15:48:46,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 225. [2021-10-08 15:48:46,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 192 states have (on average 2.8125) internal successors, (540), 224 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:48:46,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 540 transitions. [2021-10-08 15:48:46,303 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 540 transitions. Word has length 2 [2021-10-08 15:48:46,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:48:46,303 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 540 transitions. [2021-10-08 15:48:46,304 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) [2021-10-08 15:48:46,304 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 540 transitions. [2021-10-08 15:48:46,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-08 15:48:46,304 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:48:46,304 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-08 15:48:46,344 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 [2021-10-08 15:48:46,518 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 [2021-10-08 15:48:46,519 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-08 15:48:46,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:48:46,520 INFO L82 PathProgramCache]: Analyzing trace with hash 1128850, now seen corresponding path program 1 times [2021-10-08 15:48:46,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:48:46,520 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893222363] [2021-10-08 15:48:46,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:48:46,521 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:48:46,528 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-08 15:48:46,528 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [12534524] [2021-10-08 15:48:46,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:48:46,529 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:48:46,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:48:46,538 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) [2021-10-08 15:48:46,540 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 [2021-10-08 15:48:46,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:48:46,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 15:48:46,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:48:46,635 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 15:48:46,636 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:48:46,637 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893222363] [2021-10-08 15:48:46,637 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-08 15:48:46,637 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12534524] [2021-10-08 15:48:46,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [12534524] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:48:46,638 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-08 15:48:46,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2021-10-08 15:48:46,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660074861] [2021-10-08 15:48:46,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 15:48:46,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:48:46,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 15:48:46,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 15:48:46,643 INFO L87 Difference]: Start difference. First operand 225 states and 540 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) [2021-10-08 15:48:46,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:48:46,759 INFO L93 Difference]: Finished difference Result 658 states and 1588 transitions. [2021-10-08 15:48:46,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 15:48:46,761 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 [2021-10-08 15:48:46,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:48:46,769 INFO L225 Difference]: With dead ends: 658 [2021-10-08 15:48:46,769 INFO L226 Difference]: Without dead ends: 658 [2021-10-08 15:48:46,770 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.2ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 15:48:46,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2021-10-08 15:48:46,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 228. [2021-10-08 15:48:46,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 195 states have (on average 2.81025641025641) internal successors, (548), 227 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:48:46,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 548 transitions. [2021-10-08 15:48:46,796 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 548 transitions. Word has length 3 [2021-10-08 15:48:46,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:48:46,797 INFO L470 AbstractCegarLoop]: Abstraction has 228 states and 548 transitions. [2021-10-08 15:48:46,801 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) [2021-10-08 15:48:46,802 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 548 transitions. [2021-10-08 15:48:46,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-08 15:48:46,802 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:48:46,802 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1] [2021-10-08 15:48:46,845 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 [2021-10-08 15:48:47,016 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 [2021-10-08 15:48:47,017 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-08 15:48:47,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:48:47,019 INFO L82 PathProgramCache]: Analyzing trace with hash 34995451, now seen corresponding path program 2 times [2021-10-08 15:48:47,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:48:47,020 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452156421] [2021-10-08 15:48:47,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:48:47,020 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:48:47,026 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-08 15:48:47,026 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1752234935] [2021-10-08 15:48:47,026 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 15:48:47,027 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:48:47,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:48:47,028 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) [2021-10-08 15:48:47,049 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 [2021-10-08 15:48:47,089 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 15:48:47,089 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 15:48:47,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 15:48:47,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:48:47,309 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 15:48:47,310 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:48:47,310 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452156421] [2021-10-08 15:48:47,310 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-08 15:48:47,310 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752234935] [2021-10-08 15:48:47,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1752234935] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:48:47,311 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:48:47,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-08 15:48:47,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522617498] [2021-10-08 15:48:47,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 15:48:47,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:48:47,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 15:48:47,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 15:48:47,312 INFO L87 Difference]: Start difference. First operand 228 states and 548 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:48:47,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:48:47,394 INFO L93 Difference]: Finished difference Result 227 states and 547 transitions. [2021-10-08 15:48:47,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 15:48:47,395 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 [2021-10-08 15:48:47,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:48:47,399 INFO L225 Difference]: With dead ends: 227 [2021-10-08 15:48:47,399 INFO L226 Difference]: Without dead ends: 227 [2021-10-08 15:48:47,400 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 15:48:47,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2021-10-08 15:48:47,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 225. [2021-10-08 15:48:47,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 193 states have (on average 2.8134715025906734) internal successors, (543), 224 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:48:47,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 543 transitions. [2021-10-08 15:48:47,413 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 543 transitions. Word has length 4 [2021-10-08 15:48:47,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:48:47,413 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 543 transitions. [2021-10-08 15:48:47,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:48:47,413 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 543 transitions. [2021-10-08 15:48:47,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-08 15:48:47,414 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:48:47,414 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-08 15:48:47,455 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 [2021-10-08 15:48:47,628 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 [2021-10-08 15:48:47,629 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-08 15:48:47,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:48:47,630 INFO L82 PathProgramCache]: Analyzing trace with hash 1086725139, now seen corresponding path program 1 times [2021-10-08 15:48:47,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:48:47,631 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196381440] [2021-10-08 15:48:47,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:48:47,632 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:48:47,639 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-08 15:48:47,639 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1640305694] [2021-10-08 15:48:47,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:48:47,639 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:48:47,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:48:47,641 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) [2021-10-08 15:48:47,665 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 [2021-10-08 15:48:47,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:48:47,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-08 15:48:47,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:48:47,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 15:48:47,745 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:48:47,745 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196381440] [2021-10-08 15:48:47,746 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-08 15:48:47,746 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640305694] [2021-10-08 15:48:47,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1640305694] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:48:47,746 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:48:47,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-08 15:48:47,747 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073500765] [2021-10-08 15:48:47,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 15:48:47,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:48:47,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 15:48:47,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 15:48:47,748 INFO L87 Difference]: Start difference. First operand 225 states and 543 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:48:47,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:48:47,801 INFO L93 Difference]: Finished difference Result 442 states and 1073 transitions. [2021-10-08 15:48:47,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 15:48:47,802 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-08 15:48:47,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:48:47,806 INFO L225 Difference]: With dead ends: 442 [2021-10-08 15:48:47,806 INFO L226 Difference]: Without dead ends: 442 [2021-10-08 15:48:47,807 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 15:48:47,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2021-10-08 15:48:47,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 229. [2021-10-08 15:48:47,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 197 states have (on average 2.817258883248731) internal successors, (555), 228 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:48:47,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 555 transitions. [2021-10-08 15:48:47,818 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 555 transitions. Word has length 5 [2021-10-08 15:48:47,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:48:47,818 INFO L470 AbstractCegarLoop]: Abstraction has 229 states and 555 transitions. [2021-10-08 15:48:47,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:48:47,819 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 555 transitions. [2021-10-08 15:48:47,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-08 15:48:47,819 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:48:47,819 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-08 15:48:47,856 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 [2021-10-08 15:48:48,034 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 [2021-10-08 15:48:48,035 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-08 15:48:48,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:48:48,037 INFO L82 PathProgramCache]: Analyzing trace with hash 1086725140, now seen corresponding path program 1 times [2021-10-08 15:48:48,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:48:48,038 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632668500] [2021-10-08 15:48:48,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:48:48,038 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:48:48,046 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-08 15:48:48,046 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1603108239] [2021-10-08 15:48:48,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:48:48,046 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:48:48,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:48:48,048 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) [2021-10-08 15:48:48,050 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 [2021-10-08 15:48:48,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:48:48,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-08 15:48:48,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:48:48,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 15:48:48,133 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:48:48,133 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632668500] [2021-10-08 15:48:48,133 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-08 15:48:48,134 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603108239] [2021-10-08 15:48:48,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1603108239] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:48:48,134 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:48:48,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-08 15:48:48,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545384977] [2021-10-08 15:48:48,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 15:48:48,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:48:48,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 15:48:48,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 15:48:48,136 INFO L87 Difference]: Start difference. First operand 229 states and 555 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:48:48,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:48:48,154 INFO L93 Difference]: Finished difference Result 228 states and 549 transitions. [2021-10-08 15:48:48,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 15:48:48,155 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-08 15:48:48,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:48:48,157 INFO L225 Difference]: With dead ends: 228 [2021-10-08 15:48:48,157 INFO L226 Difference]: Without dead ends: 228 [2021-10-08 15:48:48,158 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 15:48:48,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2021-10-08 15:48:48,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2021-10-08 15:48:48,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 197 states have (on average 2.786802030456853) internal successors, (549), 227 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:48:48,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 549 transitions. [2021-10-08 15:48:48,167 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 549 transitions. Word has length 5 [2021-10-08 15:48:48,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:48:48,167 INFO L470 AbstractCegarLoop]: Abstraction has 228 states and 549 transitions. [2021-10-08 15:48:48,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:48:48,168 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 549 transitions. [2021-10-08 15:48:48,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-08 15:48:48,168 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:48:48,168 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1] [2021-10-08 15:48:48,203 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 [2021-10-08 15:48:48,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:48:48,383 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-08 15:48:48,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:48:48,384 INFO L82 PathProgramCache]: Analyzing trace with hash 1086755762, now seen corresponding path program 1 times [2021-10-08 15:48:48,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:48:48,385 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587426065] [2021-10-08 15:48:48,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:48:48,385 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:48:48,393 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-08 15:48:48,394 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [367234601] [2021-10-08 15:48:48,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:48:48,394 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:48:48,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:48:48,396 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) [2021-10-08 15:48:48,412 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 [2021-10-08 15:48:48,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:48:48,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 15:48:48,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:48:48,515 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 15:48:48,515 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:48:48,515 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587426065] [2021-10-08 15:48:48,515 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-08 15:48:48,515 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367234601] [2021-10-08 15:48:48,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [367234601] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:48:48,516 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:48:48,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-08 15:48:48,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866653527] [2021-10-08 15:48:48,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 15:48:48,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:48:48,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 15:48:48,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-08 15:48:48,518 INFO L87 Difference]: Start difference. First operand 228 states and 549 transitions. Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:48:48,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:48:48,642 INFO L93 Difference]: Finished difference Result 658 states and 1596 transitions. [2021-10-08 15:48:48,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 15:48:48,642 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-08 15:48:48,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:48:48,648 INFO L225 Difference]: With dead ends: 658 [2021-10-08 15:48:48,648 INFO L226 Difference]: Without dead ends: 658 [2021-10-08 15:48:48,648 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-08 15:48:48,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2021-10-08 15:48:48,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 230. [2021-10-08 15:48:48,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 199 states have (on average 2.7738693467336684) internal successors, (552), 229 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:48:48,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 552 transitions. [2021-10-08 15:48:48,677 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 552 transitions. Word has length 5 [2021-10-08 15:48:48,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:48:48,677 INFO L470 AbstractCegarLoop]: Abstraction has 230 states and 552 transitions. [2021-10-08 15:48:48,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:48:48,678 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 552 transitions. [2021-10-08 15:48:48,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-08 15:48:48,678 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:48:48,678 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2021-10-08 15:48:48,733 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 [2021-10-08 15:48:48,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:48:48,896 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-08 15:48:48,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:48:48,897 INFO L82 PathProgramCache]: Analyzing trace with hash -727179045, now seen corresponding path program 1 times [2021-10-08 15:48:48,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:48:48,898 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640919651] [2021-10-08 15:48:48,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:48:48,898 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:48:48,905 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-08 15:48:48,905 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2053399687] [2021-10-08 15:48:48,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:48:48,906 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:48:48,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:48:48,907 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) [2021-10-08 15:48:48,911 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 [2021-10-08 15:48:48,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:48:48,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 15:48:48,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:48:49,072 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 15:48:49,072 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:48:49,072 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640919651] [2021-10-08 15:48:49,072 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-08 15:48:49,072 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053399687] [2021-10-08 15:48:49,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2053399687] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:48:49,073 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-08 15:48:49,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-10-08 15:48:49,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983662101] [2021-10-08 15:48:49,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-08 15:48:49,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:48:49,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-08 15:48:49,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-08 15:48:49,075 INFO L87 Difference]: Start difference. First operand 230 states and 552 transitions. Second operand has 6 states, 6 states have (on average 1.0) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:48:49,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:48:49,205 INFO L93 Difference]: Finished difference Result 1085 states and 2637 transitions. [2021-10-08 15:48:49,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 15:48:49,207 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.0) internal successors, (6), 5 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 [2021-10-08 15:48:49,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:48:49,215 INFO L225 Difference]: With dead ends: 1085 [2021-10-08 15:48:49,216 INFO L226 Difference]: Without dead ends: 1085 [2021-10-08 15:48:49,216 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 41.0ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-08 15:48:49,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1085 states. [2021-10-08 15:48:49,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1085 to 232. [2021-10-08 15:48:49,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 201 states have (on average 2.7661691542288556) internal successors, (556), 231 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:48:49,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 556 transitions. [2021-10-08 15:48:49,233 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 556 transitions. Word has length 6 [2021-10-08 15:48:49,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:48:49,233 INFO L470 AbstractCegarLoop]: Abstraction has 232 states and 556 transitions. [2021-10-08 15:48:49,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.0) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:48:49,234 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 556 transitions. [2021-10-08 15:48:49,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-08 15:48:49,234 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:48:49,234 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1] [2021-10-08 15:48:49,265 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 [2021-10-08 15:48:49,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:48:49,448 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-08 15:48:49,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:48:49,449 INFO L82 PathProgramCache]: Analyzing trace with hash -1124583214, now seen corresponding path program 2 times [2021-10-08 15:48:49,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:48:49,450 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884218178] [2021-10-08 15:48:49,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:48:49,450 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:48:49,457 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-08 15:48:49,457 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1323074435] [2021-10-08 15:48:49,458 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 15:48:49,458 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:48:49,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:48:49,459 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) [2021-10-08 15:48:49,475 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 [2021-10-08 15:48:49,524 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 15:48:49,524 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 15:48:49,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 15:48:49,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:48:49,724 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 15:48:49,725 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:48:49,725 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884218178] [2021-10-08 15:48:49,725 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-08 15:48:49,725 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1323074435] [2021-10-08 15:48:49,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1323074435] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:48:49,726 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:48:49,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-08 15:48:49,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417330951] [2021-10-08 15:48:49,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 15:48:49,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:48:49,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 15:48:49,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-08 15:48:49,727 INFO L87 Difference]: Start difference. First operand 232 states and 556 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:48:49,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:48:49,838 INFO L93 Difference]: Finished difference Result 443 states and 1073 transitions. [2021-10-08 15:48:49,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 15:48:49,839 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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 7 [2021-10-08 15:48:49,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:48:49,843 INFO L225 Difference]: With dead ends: 443 [2021-10-08 15:48:49,843 INFO L226 Difference]: Without dead ends: 443 [2021-10-08 15:48:49,843 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 65.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-08 15:48:49,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2021-10-08 15:48:49,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 229. [2021-10-08 15:48:49,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 199 states have (on average 2.7688442211055277) internal successors, (551), 228 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:48:49,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 551 transitions. [2021-10-08 15:48:49,854 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 551 transitions. Word has length 7 [2021-10-08 15:48:49,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:48:49,854 INFO L470 AbstractCegarLoop]: Abstraction has 229 states and 551 transitions. [2021-10-08 15:48:49,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:48:49,855 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 551 transitions. [2021-10-08 15:48:49,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-08 15:48:49,855 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:48:49,855 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2021-10-08 15:48:49,895 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-08 15:48:50,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:48:50,070 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-08 15:48:50,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:48:50,071 INFO L82 PathProgramCache]: Analyzing trace with hash 665839678, now seen corresponding path program 1 times [2021-10-08 15:48:50,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:48:50,071 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385448966] [2021-10-08 15:48:50,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:48:50,072 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:48:50,079 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-08 15:48:50,079 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1839643175] [2021-10-08 15:48:50,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:48:50,080 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:48:50,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:48:50,081 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 15:48:50,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-08 15:48:50,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:48:50,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 15:48:50,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:48:50,209 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 15:48:50,210 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:48:50,210 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385448966] [2021-10-08 15:48:50,210 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-08 15:48:50,210 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1839643175] [2021-10-08 15:48:50,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1839643175] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:48:50,211 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-08 15:48:50,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2021-10-08 15:48:50,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128031550] [2021-10-08 15:48:50,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 15:48:50,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:48:50,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 15:48:50,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 15:48:50,212 INFO L87 Difference]: Start difference. First operand 229 states and 551 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:48:50,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:48:50,250 INFO L93 Difference]: Finished difference Result 659 states and 1596 transitions. [2021-10-08 15:48:50,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 15:48:50,251 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-08 15:48:50,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:48:50,257 INFO L225 Difference]: With dead ends: 659 [2021-10-08 15:48:50,257 INFO L226 Difference]: Without dead ends: 659 [2021-10-08 15:48:50,258 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 15:48:50,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2021-10-08 15:48:50,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 233. [2021-10-08 15:48:50,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 203 states have (on average 2.7586206896551726) internal successors, (560), 232 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:48:50,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 560 transitions. [2021-10-08 15:48:50,271 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 560 transitions. Word has length 7 [2021-10-08 15:48:50,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:48:50,271 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 560 transitions. [2021-10-08 15:48:50,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:48:50,272 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 560 transitions. [2021-10-08 15:48:50,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-08 15:48:50,272 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:48:50,273 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2021-10-08 15:48:50,312 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-08 15:48:50,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-10-08 15:48:50,487 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-08 15:48:50,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:48:50,488 INFO L82 PathProgramCache]: Analyzing trace with hash 665857847, now seen corresponding path program 1 times [2021-10-08 15:48:50,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:48:50,488 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140208780] [2021-10-08 15:48:50,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:48:50,489 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:48:50,496 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-08 15:48:50,496 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1372949398] [2021-10-08 15:48:50,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:48:50,497 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:48:50,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:48:50,498 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 15:48:50,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-08 15:48:50,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:48:50,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-08 15:48:50,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:48:50,625 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 15:48:50,626 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:48:50,626 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140208780] [2021-10-08 15:48:50,626 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-08 15:48:50,626 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372949398] [2021-10-08 15:48:50,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1372949398] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:48:50,626 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-08 15:48:50,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2021-10-08 15:48:50,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454451879] [2021-10-08 15:48:50,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-08 15:48:50,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:48:50,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-08 15:48:50,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-08 15:48:50,628 INFO L87 Difference]: Start difference. First operand 233 states and 560 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:48:50,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:48:50,723 INFO L93 Difference]: Finished difference Result 889 states and 2148 transitions. [2021-10-08 15:48:50,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-08 15:48:50,725 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-08 15:48:50,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:48:50,733 INFO L225 Difference]: With dead ends: 889 [2021-10-08 15:48:50,733 INFO L226 Difference]: Without dead ends: 889 [2021-10-08 15:48:50,733 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.6ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-08 15:48:50,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2021-10-08 15:48:50,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 236. [2021-10-08 15:48:50,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 206 states have (on average 2.7524271844660193) internal successors, (567), 235 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:48:50,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 567 transitions. [2021-10-08 15:48:50,752 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 567 transitions. Word has length 7 [2021-10-08 15:48:50,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:48:50,752 INFO L470 AbstractCegarLoop]: Abstraction has 236 states and 567 transitions. [2021-10-08 15:48:50,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:48:50,753 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 567 transitions. [2021-10-08 15:48:50,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-08 15:48:50,753 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:48:50,754 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:48:50,803 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-10-08 15:48:50,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:48:50,968 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-08 15:48:50,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:48:50,969 INFO L82 PathProgramCache]: Analyzing trace with hash -967415884, now seen corresponding path program 1 times [2021-10-08 15:48:50,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:48:50,969 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179692493] [2021-10-08 15:48:50,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:48:50,970 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:48:50,978 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-08 15:48:50,978 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1880930771] [2021-10-08 15:48:50,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:48:50,979 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:48:50,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:48:50,980 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 15:48:50,982 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-10-08 15:48:51,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:48:51,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-08 15:48:51,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:48:51,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 15:48:51,114 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:48:51,114 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179692493] [2021-10-08 15:48:51,114 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-08 15:48:51,115 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1880930771] [2021-10-08 15:48:51,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1880930771] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:48:51,115 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:48:51,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-08 15:48:51,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195001886] [2021-10-08 15:48:51,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-08 15:48:51,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:48:51,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-08 15:48:51,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-08 15:48:51,120 INFO L87 Difference]: Start difference. First operand 236 states and 567 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 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) [2021-10-08 15:48:51,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:48:51,254 INFO L93 Difference]: Finished difference Result 502 states and 1131 transitions. [2021-10-08 15:48:51,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 15:48:51,255 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 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 [2021-10-08 15:48:51,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:48:51,259 INFO L225 Difference]: With dead ends: 502 [2021-10-08 15:48:51,259 INFO L226 Difference]: Without dead ends: 502 [2021-10-08 15:48:51,259 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.3ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-08 15:48:51,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2021-10-08 15:48:51,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 314. [2021-10-08 15:48:51,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 284 states have (on average 2.676056338028169) internal successors, (760), 313 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:48:51,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 760 transitions. [2021-10-08 15:48:51,273 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 760 transitions. Word has length 8 [2021-10-08 15:48:51,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:48:51,273 INFO L470 AbstractCegarLoop]: Abstraction has 314 states and 760 transitions. [2021-10-08 15:48:51,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 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) [2021-10-08 15:48:51,273 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 760 transitions. [2021-10-08 15:48:51,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-08 15:48:51,275 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:48:51,275 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1] [2021-10-08 15:48:51,317 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-10-08 15:48:51,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-10-08 15:48:51,492 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-08 15:48:51,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:48:51,492 INFO L82 PathProgramCache]: Analyzing trace with hash -833240751, now seen corresponding path program 2 times [2021-10-08 15:48:51,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:48:51,493 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439970622] [2021-10-08 15:48:51,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:48:51,494 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:48:51,500 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-08 15:48:51,500 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2013885642] [2021-10-08 15:48:51,501 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 15:48:51,501 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:48:51,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:48:51,502 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 15:48:51,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-10-08 15:48:51,584 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 15:48:51,584 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 15:48:51,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-08 15:48:51,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:48:51,615 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 15:48:51,615 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:48:51,615 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439970622] [2021-10-08 15:48:51,616 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-08 15:48:51,616 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013885642] [2021-10-08 15:48:51,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2013885642] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:48:51,616 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:48:51,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-08 15:48:51,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171604285] [2021-10-08 15:48:51,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 15:48:51,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:48:51,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 15:48:51,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-08 15:48:51,620 INFO L87 Difference]: Start difference. First operand 314 states and 760 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:48:51,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:48:51,855 INFO L93 Difference]: Finished difference Result 586 states and 1425 transitions. [2021-10-08 15:48:51,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 15:48:51,856 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-08 15:48:51,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:48:51,861 INFO L225 Difference]: With dead ends: 586 [2021-10-08 15:48:51,861 INFO L226 Difference]: Without dead ends: 586 [2021-10-08 15:48:51,862 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-08 15:48:51,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2021-10-08 15:48:51,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 295. [2021-10-08 15:48:51,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 266 states have (on average 2.6766917293233083) internal successors, (712), 294 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:48:51,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 712 transitions. [2021-10-08 15:48:51,887 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 712 transitions. Word has length 8 [2021-10-08 15:48:51,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:48:51,887 INFO L470 AbstractCegarLoop]: Abstraction has 295 states and 712 transitions. [2021-10-08 15:48:51,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:48:51,888 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 712 transitions. [2021-10-08 15:48:51,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-08 15:48:51,889 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:48:51,889 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1] [2021-10-08 15:48:51,927 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-10-08 15:48:52,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-10-08 15:48:52,104 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-08 15:48:52,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:48:52,105 INFO L82 PathProgramCache]: Analyzing trace with hash -78162519, now seen corresponding path program 2 times [2021-10-08 15:48:52,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:48:52,106 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825119396] [2021-10-08 15:48:52,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:48:52,107 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:48:52,114 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-08 15:48:52,115 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [218285711] [2021-10-08 15:48:52,115 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 15:48:52,115 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:48:52,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:48:52,116 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 15:48:52,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-10-08 15:48:52,202 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 15:48:52,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 15:48:52,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 15:48:52,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:48:52,236 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-08 15:48:52,237 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:48:52,237 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825119396] [2021-10-08 15:48:52,237 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-08 15:48:52,237 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [218285711] [2021-10-08 15:48:52,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [218285711] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:48:52,237 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-08 15:48:52,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2021-10-08 15:48:52,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854058825] [2021-10-08 15:48:52,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 15:48:52,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:48:52,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 15:48:52,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-08 15:48:52,239 INFO L87 Difference]: Start difference. First operand 295 states and 712 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:48:52,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:48:52,287 INFO L93 Difference]: Finished difference Result 567 states and 1381 transitions. [2021-10-08 15:48:52,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 15:48:52,288 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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 9 [2021-10-08 15:48:52,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:48:52,292 INFO L225 Difference]: With dead ends: 567 [2021-10-08 15:48:52,292 INFO L226 Difference]: Without dead ends: 567 [2021-10-08 15:48:52,294 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-08 15:48:52,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2021-10-08 15:48:52,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 286. [2021-10-08 15:48:52,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 258 states have (on average 2.689922480620155) internal successors, (694), 285 states have internal predecessors, (694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:48:52,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 694 transitions. [2021-10-08 15:48:52,307 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 694 transitions. Word has length 9 [2021-10-08 15:48:52,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:48:52,307 INFO L470 AbstractCegarLoop]: Abstraction has 286 states and 694 transitions. [2021-10-08 15:48:52,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:48:52,307 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 694 transitions. [2021-10-08 15:48:52,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-08 15:48:52,315 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:48:52,315 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:48:52,351 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-10-08 15:48:52,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-10-08 15:48:52,530 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-08 15:48:52,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:48:52,531 INFO L82 PathProgramCache]: Analyzing trace with hash -731051447, now seen corresponding path program 1 times [2021-10-08 15:48:52,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:48:52,532 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106683227] [2021-10-08 15:48:52,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:48:52,532 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:48:52,539 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-08 15:48:52,539 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [668700733] [2021-10-08 15:48:52,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:48:52,539 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:48:52,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:48:52,540 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 15:48:52,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-10-08 15:48:52,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:48:52,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-08 15:48:52,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:48:52,670 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 15:48:52,670 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:48:52,671 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106683227] [2021-10-08 15:48:52,671 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-08 15:48:52,671 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [668700733] [2021-10-08 15:48:52,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [668700733] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:48:52,671 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:48:52,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-08 15:48:52,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878175850] [2021-10-08 15:48:52,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 15:48:52,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:48:52,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 15:48:52,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 15:48:52,674 INFO L87 Difference]: Start difference. First operand 286 states and 694 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:48:52,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:48:52,691 INFO L93 Difference]: Finished difference Result 407 states and 1013 transitions. [2021-10-08 15:48:52,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 15:48:52,692 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) 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 [2021-10-08 15:48:52,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:48:52,695 INFO L225 Difference]: With dead ends: 407 [2021-10-08 15:48:52,695 INFO L226 Difference]: Without dead ends: 407 [2021-10-08 15:48:52,696 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 15:48:52,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2021-10-08 15:48:52,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 346. [2021-10-08 15:48:52,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 318 states have (on average 2.849056603773585) internal successors, (906), 345 states have internal predecessors, (906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:48:52,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 906 transitions. [2021-10-08 15:48:52,708 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 906 transitions. Word has length 10 [2021-10-08 15:48:52,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:48:52,709 INFO L470 AbstractCegarLoop]: Abstraction has 346 states and 906 transitions. [2021-10-08 15:48:52,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:48:52,709 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 906 transitions. [2021-10-08 15:48:52,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-08 15:48:52,710 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:48:52,710 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:48:52,746 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-10-08 15:48:52,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-10-08 15:48:52,925 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-08 15:48:52,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:48:52,925 INFO L82 PathProgramCache]: Analyzing trace with hash -731051445, now seen corresponding path program 1 times [2021-10-08 15:48:52,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:48:52,926 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057257058] [2021-10-08 15:48:52,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:48:52,926 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:48:52,933 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-08 15:48:52,933 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1546311656] [2021-10-08 15:48:52,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:48:52,934 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:48:52,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:48:52,935 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 15:48:52,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-10-08 15:48:53,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:48:53,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-08 15:48:53,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:48:53,034 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 15:48:53,034 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:48:53,035 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057257058] [2021-10-08 15:48:53,035 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-08 15:48:53,035 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1546311656] [2021-10-08 15:48:53,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1546311656] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:48:53,035 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:48:53,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-08 15:48:53,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168104257] [2021-10-08 15:48:53,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 15:48:53,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:48:53,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 15:48:53,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 15:48:53,047 INFO L87 Difference]: Start difference. First operand 346 states and 906 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:48:53,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:48:53,062 INFO L93 Difference]: Finished difference Result 316 states and 800 transitions. [2021-10-08 15:48:53,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 15:48:53,062 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) 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 [2021-10-08 15:48:53,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:48:53,065 INFO L225 Difference]: With dead ends: 316 [2021-10-08 15:48:53,065 INFO L226 Difference]: Without dead ends: 316 [2021-10-08 15:48:53,066 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 15:48:53,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2021-10-08 15:48:53,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 316. [2021-10-08 15:48:53,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 297 states have (on average 2.6936026936026938) internal successors, (800), 315 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:48:53,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 800 transitions. [2021-10-08 15:48:53,077 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 800 transitions. Word has length 10 [2021-10-08 15:48:53,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:48:53,077 INFO L470 AbstractCegarLoop]: Abstraction has 316 states and 800 transitions. [2021-10-08 15:48:53,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:48:53,077 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 800 transitions. [2021-10-08 15:48:53,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-08 15:48:53,078 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:48:53,078 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:48:53,114 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-10-08 15:48:53,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-10-08 15:48:53,292 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-08 15:48:53,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:48:53,293 INFO L82 PathProgramCache]: Analyzing trace with hash -1674315923, now seen corresponding path program 1 times [2021-10-08 15:48:53,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:48:53,293 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126027419] [2021-10-08 15:48:53,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:48:53,294 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:48:53,300 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-08 15:48:53,300 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1431293039] [2021-10-08 15:48:53,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:48:53,301 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:48:53,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:48:53,302 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 15:48:53,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-10-08 15:48:53,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:48:53,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 15:48:53,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:48:53,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 15:48:53,431 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:48:53,431 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126027419] [2021-10-08 15:48:53,431 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-08 15:48:53,431 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431293039] [2021-10-08 15:48:53,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1431293039] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:48:53,431 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:48:53,431 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-08 15:48:53,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810002895] [2021-10-08 15:48:53,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-08 15:48:53,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:48:53,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-08 15:48:53,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-08 15:48:53,433 INFO L87 Difference]: Start difference. First operand 316 states and 800 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:48:53,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:48:53,511 INFO L93 Difference]: Finished difference Result 401 states and 982 transitions. [2021-10-08 15:48:53,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-08 15:48:53,512 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 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 [2021-10-08 15:48:53,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:48:53,515 INFO L225 Difference]: With dead ends: 401 [2021-10-08 15:48:53,515 INFO L226 Difference]: Without dead ends: 369 [2021-10-08 15:48:53,515 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.1ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-08 15:48:53,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2021-10-08 15:48:53,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 365. [2021-10-08 15:48:53,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 346 states have (on average 2.615606936416185) internal successors, (905), 364 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:48:53,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 905 transitions. [2021-10-08 15:48:53,529 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 905 transitions. Word has length 10 [2021-10-08 15:48:53,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:48:53,529 INFO L470 AbstractCegarLoop]: Abstraction has 365 states and 905 transitions. [2021-10-08 15:48:53,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:48:53,529 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 905 transitions. [2021-10-08 15:48:53,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-08 15:48:53,530 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:48:53,530 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:48:53,572 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-10-08 15:48:53,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-10-08 15:48:53,744 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-08 15:48:53,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:48:53,745 INFO L82 PathProgramCache]: Analyzing trace with hash 1834272846, now seen corresponding path program 1 times [2021-10-08 15:48:53,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:48:53,746 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108373442] [2021-10-08 15:48:53,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:48:53,746 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:48:53,753 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-08 15:48:53,753 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1610799976] [2021-10-08 15:48:53,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:48:53,753 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:48:53,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:48:53,754 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 15:48:53,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-10-08 15:48:53,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:48:53,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 15:48:53,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:48:53,946 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 15:48:53,946 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:48:53,946 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108373442] [2021-10-08 15:48:53,947 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-08 15:48:53,947 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1610799976] [2021-10-08 15:48:53,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1610799976] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:48:53,947 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-08 15:48:53,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-08 15:48:53,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282418932] [2021-10-08 15:48:53,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-08 15:48:53,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:48:53,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-08 15:48:53,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-08 15:48:53,949 INFO L87 Difference]: Start difference. First operand 365 states and 905 transitions. Second operand has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:48:54,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:48:54,089 INFO L93 Difference]: Finished difference Result 645 states and 1523 transitions. [2021-10-08 15:48:54,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-08 15:48:54,090 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-08 15:48:54,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:48:54,094 INFO L225 Difference]: With dead ends: 645 [2021-10-08 15:48:54,095 INFO L226 Difference]: Without dead ends: 612 [2021-10-08 15:48:54,095 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 60.6ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-10-08 15:48:54,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2021-10-08 15:48:54,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 460. [2021-10-08 15:48:54,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 441 states have (on average 2.6553287981859413) internal successors, (1171), 459 states have internal predecessors, (1171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:48:54,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 1171 transitions. [2021-10-08 15:48:54,111 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 1171 transitions. Word has length 12 [2021-10-08 15:48:54,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:48:54,111 INFO L470 AbstractCegarLoop]: Abstraction has 460 states and 1171 transitions. [2021-10-08 15:48:54,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:48:54,112 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 1171 transitions. [2021-10-08 15:48:54,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-08 15:48:54,112 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:48:54,112 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:48:54,151 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-10-08 15:48:54,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:48:54,326 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-08 15:48:54,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:48:54,326 INFO L82 PathProgramCache]: Analyzing trace with hash 82447906, now seen corresponding path program 1 times [2021-10-08 15:48:54,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:48:54,327 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395041887] [2021-10-08 15:48:54,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:48:54,327 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:48:54,334 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-08 15:48:54,334 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [433349402] [2021-10-08 15:48:54,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:48:54,335 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:48:54,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:48:54,336 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 15:48:54,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-10-08 15:48:54,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:48:54,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-08 15:48:54,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:48:54,457 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 15:48:54,458 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:48:54,461 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395041887] [2021-10-08 15:48:54,461 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-08 15:48:54,461 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [433349402] [2021-10-08 15:48:54,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [433349402] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:48:54,461 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:48:54,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-08 15:48:54,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325752484] [2021-10-08 15:48:54,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 15:48:54,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:48:54,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 15:48:54,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 15:48:54,463 INFO L87 Difference]: Start difference. First operand 460 states and 1171 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:48:54,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:48:54,502 INFO L93 Difference]: Finished difference Result 697 states and 1864 transitions. [2021-10-08 15:48:54,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 15:48:54,503 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-08 15:48:54,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:48:54,508 INFO L225 Difference]: With dead ends: 697 [2021-10-08 15:48:54,508 INFO L226 Difference]: Without dead ends: 697 [2021-10-08 15:48:54,509 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 15:48:54,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2021-10-08 15:48:54,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 538. [2021-10-08 15:48:54,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 519 states have (on average 3.0) internal successors, (1557), 537 states have internal predecessors, (1557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:48:54,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 1557 transitions. [2021-10-08 15:48:54,530 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 1557 transitions. Word has length 12 [2021-10-08 15:48:54,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:48:54,531 INFO L470 AbstractCegarLoop]: Abstraction has 538 states and 1557 transitions. [2021-10-08 15:48:54,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:48:54,531 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 1557 transitions. [2021-10-08 15:48:54,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-08 15:48:54,532 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:48:54,532 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:48:54,571 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2021-10-08 15:48:54,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:48:54,746 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-08 15:48:54,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:48:54,747 INFO L82 PathProgramCache]: Analyzing trace with hash 82447907, now seen corresponding path program 1 times [2021-10-08 15:48:54,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:48:54,748 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950585745] [2021-10-08 15:48:54,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:48:54,748 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:48:54,754 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-08 15:48:54,754 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [811288971] [2021-10-08 15:48:54,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:48:54,755 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:48:54,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:48:54,756 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 15:48:54,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-10-08 15:48:54,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:48:54,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-08 15:48:54,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:48:54,923 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 15:48:54,923 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:48:54,923 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950585745] [2021-10-08 15:48:54,924 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-08 15:48:54,924 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [811288971] [2021-10-08 15:48:54,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [811288971] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:48:54,924 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:48:54,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-08 15:48:54,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68135720] [2021-10-08 15:48:54,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-08 15:48:54,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:48:54,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-08 15:48:54,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-08 15:48:54,926 INFO L87 Difference]: Start difference. First operand 538 states and 1557 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:48:55,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:48:55,099 INFO L93 Difference]: Finished difference Result 1027 states and 2789 transitions. [2021-10-08 15:48:55,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 15:48:55,099 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-08 15:48:55,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:48:55,107 INFO L225 Difference]: With dead ends: 1027 [2021-10-08 15:48:55,107 INFO L226 Difference]: Without dead ends: 967 [2021-10-08 15:48:55,108 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.2ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-08 15:48:55,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 967 states. [2021-10-08 15:48:55,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 967 to 652. [2021-10-08 15:48:55,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 652 states, 633 states have (on average 2.9984202211690363) internal successors, (1898), 651 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:48:55,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 1898 transitions. [2021-10-08 15:48:55,133 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 1898 transitions. Word has length 12 [2021-10-08 15:48:55,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:48:55,135 INFO L470 AbstractCegarLoop]: Abstraction has 652 states and 1898 transitions. [2021-10-08 15:48:55,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:48:55,135 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 1898 transitions. [2021-10-08 15:48:55,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-08 15:48:55,136 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:48:55,136 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:48:55,174 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-10-08 15:48:55,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,21 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:48:55,349 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-08 15:48:55,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:48:55,350 INFO L82 PathProgramCache]: Analyzing trace with hash 82447803, now seen corresponding path program 1 times [2021-10-08 15:48:55,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:48:55,351 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291380338] [2021-10-08 15:48:55,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:48:55,351 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:48:55,358 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-08 15:48:55,358 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1916277776] [2021-10-08 15:48:55,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:48:55,358 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:48:55,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:48:55,359 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 15:48:55,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-10-08 15:48:55,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:48:55,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-08 15:48:55,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:48:55,489 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 15:48:55,490 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:48:55,490 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291380338] [2021-10-08 15:48:55,490 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-08 15:48:55,490 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916277776] [2021-10-08 15:48:55,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1916277776] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:48:55,490 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:48:55,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-08 15:48:55,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155699891] [2021-10-08 15:48:55,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 15:48:55,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:48:55,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 15:48:55,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 15:48:55,492 INFO L87 Difference]: Start difference. First operand 652 states and 1898 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:48:55,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:48:55,527 INFO L93 Difference]: Finished difference Result 1081 states and 3252 transitions. [2021-10-08 15:48:55,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 15:48:55,528 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-08 15:48:55,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:48:55,537 INFO L225 Difference]: With dead ends: 1081 [2021-10-08 15:48:55,537 INFO L226 Difference]: Without dead ends: 1081 [2021-10-08 15:48:55,538 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 15:48:55,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1081 states. [2021-10-08 15:48:55,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1081 to 886. [2021-10-08 15:48:55,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 886 states, 867 states have (on average 3.3886966551326414) internal successors, (2938), 885 states have internal predecessors, (2938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:48:55,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 886 states to 886 states and 2938 transitions. [2021-10-08 15:48:55,571 INFO L78 Accepts]: Start accepts. Automaton has 886 states and 2938 transitions. Word has length 12 [2021-10-08 15:48:55,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:48:55,571 INFO L470 AbstractCegarLoop]: Abstraction has 886 states and 2938 transitions. [2021-10-08 15:48:55,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:48:55,572 INFO L276 IsEmpty]: Start isEmpty. Operand 886 states and 2938 transitions. [2021-10-08 15:48:55,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-08 15:48:55,572 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:48:55,572 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:48:55,611 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-10-08 15:48:55,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-10-08 15:48:55,786 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-08 15:48:55,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:48:55,787 INFO L82 PathProgramCache]: Analyzing trace with hash 82447804, now seen corresponding path program 1 times [2021-10-08 15:48:55,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:48:55,787 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91431623] [2021-10-08 15:48:55,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:48:55,788 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:48:55,794 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-08 15:48:55,794 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [858725574] [2021-10-08 15:48:55,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:48:55,795 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:48:55,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:48:55,796 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 15:48:55,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-10-08 15:48:55,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:48:55,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-08 15:48:55,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:48:55,936 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 15:48:55,936 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:48:55,936 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91431623] [2021-10-08 15:48:55,936 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-08 15:48:55,936 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858725574] [2021-10-08 15:48:55,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [858725574] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:48:55,937 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:48:55,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-08 15:48:55,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683900431] [2021-10-08 15:48:55,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 15:48:55,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:48:55,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 15:48:55,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 15:48:55,938 INFO L87 Difference]: Start difference. First operand 886 states and 2938 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:48:55,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:48:55,961 INFO L93 Difference]: Finished difference Result 860 states and 2740 transitions. [2021-10-08 15:48:55,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 15:48:55,961 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-08 15:48:55,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:48:55,969 INFO L225 Difference]: With dead ends: 860 [2021-10-08 15:48:55,969 INFO L226 Difference]: Without dead ends: 860 [2021-10-08 15:48:55,970 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 15:48:55,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 860 states. [2021-10-08 15:48:55,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 860 to 860. [2021-10-08 15:48:55,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 860 states, 843 states have (on average 3.250296559905101) internal successors, (2740), 859 states have internal predecessors, (2740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:48:55,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 860 states to 860 states and 2740 transitions. [2021-10-08 15:48:55,999 INFO L78 Accepts]: Start accepts. Automaton has 860 states and 2740 transitions. Word has length 12 [2021-10-08 15:48:55,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:48:55,999 INFO L470 AbstractCegarLoop]: Abstraction has 860 states and 2740 transitions. [2021-10-08 15:48:55,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:48:55,999 INFO L276 IsEmpty]: Start isEmpty. Operand 860 states and 2740 transitions. [2021-10-08 15:48:56,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-08 15:48:56,000 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:48:56,000 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:48:56,039 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-10-08 15:48:56,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-10-08 15:48:56,215 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-08 15:48:56,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:48:56,216 INFO L82 PathProgramCache]: Analyzing trace with hash 223198281, now seen corresponding path program 1 times [2021-10-08 15:48:56,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:48:56,216 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292046428] [2021-10-08 15:48:56,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:48:56,217 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:48:56,224 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-08 15:48:56,224 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1495897960] [2021-10-08 15:48:56,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:48:56,224 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:48:56,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:48:56,225 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 15:48:56,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-10-08 15:48:56,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:48:56,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-08 15:48:56,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:48:56,360 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 15:48:56,360 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:48:56,361 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292046428] [2021-10-08 15:48:56,361 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-08 15:48:56,361 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495897960] [2021-10-08 15:48:56,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1495897960] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:48:56,361 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:48:56,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-08 15:48:56,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576425162] [2021-10-08 15:48:56,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 15:48:56,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:48:56,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 15:48:56,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 15:48:56,363 INFO L87 Difference]: Start difference. First operand 860 states and 2740 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:48:56,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:48:56,415 INFO L93 Difference]: Finished difference Result 847 states and 2510 transitions. [2021-10-08 15:48:56,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 15:48:56,416 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-08 15:48:56,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:48:56,422 INFO L225 Difference]: With dead ends: 847 [2021-10-08 15:48:56,422 INFO L226 Difference]: Without dead ends: 847 [2021-10-08 15:48:56,423 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 15:48:56,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2021-10-08 15:48:56,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 808. [2021-10-08 15:48:56,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 808 states, 795 states have (on average 3.079245283018868) internal successors, (2448), 807 states have internal predecessors, (2448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:48:56,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 2448 transitions. [2021-10-08 15:48:56,470 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 2448 transitions. Word has length 13 [2021-10-08 15:48:56,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:48:56,470 INFO L470 AbstractCegarLoop]: Abstraction has 808 states and 2448 transitions. [2021-10-08 15:48:56,470 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:48:56,470 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 2448 transitions. [2021-10-08 15:48:56,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-08 15:48:56,471 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:48:56,471 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:48:56,509 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-10-08 15:48:56,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,24 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:48:56,685 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-08 15:48:56,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:48:56,686 INFO L82 PathProgramCache]: Analyzing trace with hash 223198174, now seen corresponding path program 1 times [2021-10-08 15:48:56,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:48:56,686 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087334581] [2021-10-08 15:48:56,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:48:56,687 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:48:56,694 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-08 15:48:56,694 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2049312353] [2021-10-08 15:48:56,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:48:56,695 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:48:56,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:48:56,696 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 15:48:56,706 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-10-08 15:48:56,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:48:56,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-08 15:48:56,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:48:56,851 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 15:48:56,852 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:48:56,852 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087334581] [2021-10-08 15:48:56,852 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-08 15:48:56,852 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049312353] [2021-10-08 15:48:56,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049312353] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:48:56,852 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:48:56,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-08 15:48:56,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576034965] [2021-10-08 15:48:56,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 15:48:56,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:48:56,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 15:48:56,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 15:48:56,854 INFO L87 Difference]: Start difference. First operand 808 states and 2448 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:48:56,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:48:56,882 INFO L93 Difference]: Finished difference Result 899 states and 2490 transitions. [2021-10-08 15:48:56,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 15:48:56,882 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-08 15:48:56,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:48:56,889 INFO L225 Difference]: With dead ends: 899 [2021-10-08 15:48:56,890 INFO L226 Difference]: Without dead ends: 899 [2021-10-08 15:48:56,890 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 15:48:56,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 899 states. [2021-10-08 15:48:56,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 899 to 808. [2021-10-08 15:48:56,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 808 states, 795 states have (on average 2.9484276729559746) internal successors, (2344), 807 states have internal predecessors, (2344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:48:56,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 2344 transitions. [2021-10-08 15:48:56,918 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 2344 transitions. Word has length 13 [2021-10-08 15:48:56,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:48:56,919 INFO L470 AbstractCegarLoop]: Abstraction has 808 states and 2344 transitions. [2021-10-08 15:48:56,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:48:56,919 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 2344 transitions. [2021-10-08 15:48:56,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-08 15:48:56,920 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:48:56,920 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:48:56,953 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2021-10-08 15:48:57,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-10-08 15:48:57,134 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-08 15:48:57,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:48:57,135 INFO L82 PathProgramCache]: Analyzing trace with hash -843207847, now seen corresponding path program 2 times [2021-10-08 15:48:57,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:48:57,136 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288900908] [2021-10-08 15:48:57,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:48:57,136 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:48:57,142 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-08 15:48:57,142 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2023942654] [2021-10-08 15:48:57,142 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 15:48:57,142 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:48:57,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:48:57,143 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 15:48:57,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-10-08 15:48:57,253 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 15:48:57,253 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 15:48:57,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-08 15:48:57,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:48:59,068 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-08 15:48:59,069 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 1 not checked. [2021-10-08 15:48:59,069 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:48:59,069 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288900908] [2021-10-08 15:48:59,069 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-08 15:48:59,070 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2023942654] [2021-10-08 15:48:59,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2023942654] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:48:59,070 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-08 15:48:59,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2021-10-08 15:48:59,070 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566365218] [2021-10-08 15:48:59,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 15:48:59,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:48:59,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 15:48:59,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2021-10-08 15:48:59,072 INFO L87 Difference]: Start difference. First operand 808 states and 2344 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:49:01,088 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse1 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse1) (<= .cse1 2147483647))))) is different from true [2021-10-08 15:49:01,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:49:01,694 INFO L93 Difference]: Finished difference Result 1205 states and 3460 transitions. [2021-10-08 15:49:01,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 15:49:01,698 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-08 15:49:01,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:49:01,706 INFO L225 Difference]: With dead ends: 1205 [2021-10-08 15:49:01,706 INFO L226 Difference]: Without dead ends: 1200 [2021-10-08 15:49:01,706 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3554.0ms TimeCoverageRelationStatistics Valid=7, Invalid=5, Unknown=2, NotChecked=6, Total=20 [2021-10-08 15:49:01,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1200 states. [2021-10-08 15:49:01,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1200 to 971. [2021-10-08 15:49:01,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 971 states, 958 states have (on average 3.008350730688935) internal successors, (2882), 970 states have internal predecessors, (2882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:49:01,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 2882 transitions. [2021-10-08 15:49:01,767 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 2882 transitions. Word has length 14 [2021-10-08 15:49:01,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:49:01,767 INFO L470 AbstractCegarLoop]: Abstraction has 971 states and 2882 transitions. [2021-10-08 15:49:01,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:49:01,768 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 2882 transitions. [2021-10-08 15:49:01,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-08 15:49:01,769 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:49:01,769 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:49:01,805 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-10-08 15:49:01,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,26 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:49:01,978 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-08 15:49:01,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:49:01,979 INFO L82 PathProgramCache]: Analyzing trace with hash 1923038389, now seen corresponding path program 1 times [2021-10-08 15:49:01,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:49:01,979 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027656646] [2021-10-08 15:49:01,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:49:01,980 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:49:01,986 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-08 15:49:01,986 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1116844252] [2021-10-08 15:49:01,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:49:01,987 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:49:01,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:49:01,988 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 15:49:02,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-10-08 15:49:02,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:49:02,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-08 15:49:02,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:49:02,187 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 15:49:02,187 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:49:02,187 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027656646] [2021-10-08 15:49:02,188 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-08 15:49:02,188 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116844252] [2021-10-08 15:49:02,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1116844252] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:49:02,188 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-08 15:49:02,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-08 15:49:02,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620060526] [2021-10-08 15:49:02,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-08 15:49:02,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:49:02,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-08 15:49:02,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-08 15:49:02,189 INFO L87 Difference]: Start difference. First operand 971 states and 2882 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:49:02,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:49:02,320 INFO L93 Difference]: Finished difference Result 1623 states and 4564 transitions. [2021-10-08 15:49:02,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-08 15:49:02,321 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have 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 [2021-10-08 15:49:02,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:49:02,330 INFO L225 Difference]: With dead ends: 1623 [2021-10-08 15:49:02,330 INFO L226 Difference]: Without dead ends: 1503 [2021-10-08 15:49:02,330 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 48.0ms TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-10-08 15:49:02,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1503 states. [2021-10-08 15:49:02,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1503 to 1337. [2021-10-08 15:49:02,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1337 states, 1324 states have (on average 2.974320241691843) internal successors, (3938), 1336 states have internal predecessors, (3938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:49:02,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1337 states to 1337 states and 3938 transitions. [2021-10-08 15:49:02,380 INFO L78 Accepts]: Start accepts. Automaton has 1337 states and 3938 transitions. Word has length 14 [2021-10-08 15:49:02,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:49:02,380 INFO L470 AbstractCegarLoop]: Abstraction has 1337 states and 3938 transitions. [2021-10-08 15:49:02,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:49:02,381 INFO L276 IsEmpty]: Start isEmpty. Operand 1337 states and 3938 transitions. [2021-10-08 15:49:02,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-08 15:49:02,382 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:49:02,382 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:49:02,418 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-10-08 15:49:02,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-10-08 15:49:02,597 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-08 15:49:02,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:49:02,597 INFO L82 PathProgramCache]: Analyzing trace with hash -370496363, now seen corresponding path program 1 times [2021-10-08 15:49:02,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:49:02,598 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984785952] [2021-10-08 15:49:02,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:49:02,599 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:49:02,606 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-08 15:49:02,606 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [686212043] [2021-10-08 15:49:02,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:49:02,607 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:49:02,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:49:02,608 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 15:49:02,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-10-08 15:49:02,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:49:02,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 15:49:02,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:49:02,782 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 15:49:02,782 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:49:02,782 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984785952] [2021-10-08 15:49:02,783 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-08 15:49:02,783 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [686212043] [2021-10-08 15:49:02,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [686212043] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:49:02,783 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-08 15:49:02,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2021-10-08 15:49:02,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766973037] [2021-10-08 15:49:02,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 15:49:02,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:49:02,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 15:49:02,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 15:49:02,785 INFO L87 Difference]: Start difference. First operand 1337 states and 3938 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:49:02,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:49:02,815 INFO L93 Difference]: Finished difference Result 2061 states and 5903 transitions. [2021-10-08 15:49:02,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 15:49:02,816 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-08 15:49:02,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:49:02,826 INFO L225 Difference]: With dead ends: 2061 [2021-10-08 15:49:02,826 INFO L226 Difference]: Without dead ends: 2061 [2021-10-08 15:49:02,826 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 15:49:02,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2061 states. [2021-10-08 15:49:02,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2061 to 1673. [2021-10-08 15:49:02,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1673 states, 1660 states have (on average 3.0487951807228915) internal successors, (5061), 1672 states have internal predecessors, (5061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:49:02,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1673 states to 1673 states and 5061 transitions. [2021-10-08 15:49:02,884 INFO L78 Accepts]: Start accepts. Automaton has 1673 states and 5061 transitions. Word has length 15 [2021-10-08 15:49:02,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:49:02,885 INFO L470 AbstractCegarLoop]: Abstraction has 1673 states and 5061 transitions. [2021-10-08 15:49:02,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:49:02,885 INFO L276 IsEmpty]: Start isEmpty. Operand 1673 states and 5061 transitions. [2021-10-08 15:49:02,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-08 15:49:02,886 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:49:02,887 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:49:02,925 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2021-10-08 15:49:03,102 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-10-08 15:49:03,103 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-08 15:49:03,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:49:03,104 INFO L82 PathProgramCache]: Analyzing trace with hash -800001814, now seen corresponding path program 2 times [2021-10-08 15:49:03,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:49:03,104 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938740453] [2021-10-08 15:49:03,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:49:03,105 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:49:03,111 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-08 15:49:03,111 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1291074480] [2021-10-08 15:49:03,111 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 15:49:03,111 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:49:03,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:49:03,113 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 15:49:03,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-10-08 15:49:03,242 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 15:49:03,242 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 15:49:03,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 15:49:03,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:49:03,309 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-08 15:49:03,310 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:49:03,310 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938740453] [2021-10-08 15:49:03,310 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-08 15:49:03,310 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291074480] [2021-10-08 15:49:03,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1291074480] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:49:03,310 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-08 15:49:03,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2021-10-08 15:49:03,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418708111] [2021-10-08 15:49:03,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 15:49:03,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:49:03,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 15:49:03,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-08 15:49:03,312 INFO L87 Difference]: Start difference. First operand 1673 states and 5061 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:49:03,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:49:03,371 INFO L93 Difference]: Finished difference Result 1719 states and 5032 transitions. [2021-10-08 15:49:03,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 15:49:03,371 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-08 15:49:03,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:49:03,379 INFO L225 Difference]: With dead ends: 1719 [2021-10-08 15:49:03,379 INFO L226 Difference]: Without dead ends: 1629 [2021-10-08 15:49:03,380 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-08 15:49:03,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1629 states. [2021-10-08 15:49:03,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1629 to 1495. [2021-10-08 15:49:03,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1495 states, 1484 states have (on average 3.004043126684636) internal successors, (4458), 1494 states have internal predecessors, (4458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:49:03,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1495 states to 1495 states and 4458 transitions. [2021-10-08 15:49:03,428 INFO L78 Accepts]: Start accepts. Automaton has 1495 states and 4458 transitions. Word has length 16 [2021-10-08 15:49:03,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:49:03,428 INFO L470 AbstractCegarLoop]: Abstraction has 1495 states and 4458 transitions. [2021-10-08 15:49:03,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:49:03,429 INFO L276 IsEmpty]: Start isEmpty. Operand 1495 states and 4458 transitions. [2021-10-08 15:49:03,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-08 15:49:03,430 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:49:03,430 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:49:03,469 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-10-08 15:49:03,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-10-08 15:49:03,644 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-08 15:49:03,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:49:03,645 INFO L82 PathProgramCache]: Analyzing trace with hash 688409756, now seen corresponding path program 1 times [2021-10-08 15:49:03,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:49:03,645 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269542237] [2021-10-08 15:49:03,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:49:03,646 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:49:03,653 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-08 15:49:03,653 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1709661021] [2021-10-08 15:49:03,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:49:03,654 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:49:03,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:49:03,655 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 15:49:03,670 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-10-08 15:49:03,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:49:03,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 15:49:03,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:49:03,887 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 15:49:03,887 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:49:03,887 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269542237] [2021-10-08 15:49:03,887 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-08 15:49:03,887 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709661021] [2021-10-08 15:49:03,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1709661021] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:49:03,888 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-08 15:49:03,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-08 15:49:03,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454266490] [2021-10-08 15:49:03,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-08 15:49:03,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:49:03,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-08 15:49:03,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-08 15:49:03,889 INFO L87 Difference]: Start difference. First operand 1495 states and 4458 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:49:04,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:49:04,175 INFO L93 Difference]: Finished difference Result 3671 states and 10388 transitions. [2021-10-08 15:49:04,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-08 15:49:04,176 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-08 15:49:04,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:49:04,190 INFO L225 Difference]: With dead ends: 3671 [2021-10-08 15:49:04,191 INFO L226 Difference]: Without dead ends: 3465 [2021-10-08 15:49:04,191 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 72.1ms TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-10-08 15:49:04,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3465 states. [2021-10-08 15:49:04,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3465 to 2019. [2021-10-08 15:49:04,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2019 states, 2008 states have (on average 3.0154382470119523) internal successors, (6055), 2018 states have internal predecessors, (6055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:49:04,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2019 states to 2019 states and 6055 transitions. [2021-10-08 15:49:04,276 INFO L78 Accepts]: Start accepts. Automaton has 2019 states and 6055 transitions. Word has length 16 [2021-10-08 15:49:04,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:49:04,276 INFO L470 AbstractCegarLoop]: Abstraction has 2019 states and 6055 transitions. [2021-10-08 15:49:04,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:49:04,276 INFO L276 IsEmpty]: Start isEmpty. Operand 2019 states and 6055 transitions. [2021-10-08 15:49:04,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 15:49:04,278 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:49:04,278 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:49:04,309 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2021-10-08 15:49:04,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,30 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:49:04,491 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-08 15:49:04,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:49:04,492 INFO L82 PathProgramCache]: Analyzing trace with hash 435357594, now seen corresponding path program 2 times [2021-10-08 15:49:04,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:49:04,493 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350367467] [2021-10-08 15:49:04,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:49:04,493 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:49:04,500 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-08 15:49:04,500 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [875120115] [2021-10-08 15:49:04,500 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 15:49:04,500 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:49:04,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:49:04,501 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 15:49:04,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-10-08 15:49:04,644 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 15:49:04,644 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 15:49:04,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-08 15:49:04,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:49:06,086 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-08 15:49:08,085 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-08 15:49:08,086 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 2 not checked. [2021-10-08 15:49:08,086 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:49:08,087 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350367467] [2021-10-08 15:49:08,087 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-08 15:49:08,087 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [875120115] [2021-10-08 15:49:08,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [875120115] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:49:08,087 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-08 15:49:08,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2021-10-08 15:49:08,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598657931] [2021-10-08 15:49:08,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 15:49:08,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:49:08,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 15:49:08,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=3, Unknown=2, NotChecked=2, Total=12 [2021-10-08 15:49:08,089 INFO L87 Difference]: Start difference. First operand 2019 states and 6055 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:49:10,097 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse1 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse1) (<= .cse1 2147483647))))) is different from true [2021-10-08 15:49:10,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:49:10,107 INFO L93 Difference]: Finished difference Result 2021 states and 6059 transitions. [2021-10-08 15:49:10,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 15:49:10,107 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-08 15:49:10,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:49:10,116 INFO L225 Difference]: With dead ends: 2021 [2021-10-08 15:49:10,117 INFO L226 Difference]: Without dead ends: 2021 [2021-10-08 15:49:10,117 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5143.4ms TimeCoverageRelationStatistics Valid=7, Invalid=4, Unknown=3, NotChecked=6, Total=20 [2021-10-08 15:49:10,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2021 states. [2021-10-08 15:49:10,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2021 to 2020. [2021-10-08 15:49:10,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2020 states, 2009 states have (on average 3.0149328023892483) internal successors, (6057), 2019 states have internal predecessors, (6057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:49:10,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2020 states to 2020 states and 6057 transitions. [2021-10-08 15:49:10,185 INFO L78 Accepts]: Start accepts. Automaton has 2020 states and 6057 transitions. Word has length 17 [2021-10-08 15:49:10,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:49:10,185 INFO L470 AbstractCegarLoop]: Abstraction has 2020 states and 6057 transitions. [2021-10-08 15:49:10,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:49:10,186 INFO L276 IsEmpty]: Start isEmpty. Operand 2020 states and 6057 transitions. [2021-10-08 15:49:10,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 15:49:10,187 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:49:10,187 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:49:10,233 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2021-10-08 15:49:10,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-10-08 15:49:10,401 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-08 15:49:10,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:49:10,401 INFO L82 PathProgramCache]: Analyzing trace with hash 1261128774, now seen corresponding path program 3 times [2021-10-08 15:49:10,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:49:10,402 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234595634] [2021-10-08 15:49:10,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:49:10,402 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:49:10,410 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-08 15:49:10,410 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [525368084] [2021-10-08 15:49:10,410 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 15:49:10,410 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:49:10,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:49:10,411 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 15:49:10,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-10-08 15:49:10,569 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-08 15:49:10,570 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 15:49:10,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-08 15:49:10,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:49:12,352 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-08 15:49:14,200 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-08 15:49:14,218 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 2 not checked. [2021-10-08 15:49:14,219 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:49:14,219 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234595634] [2021-10-08 15:49:14,219 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-08 15:49:14,219 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [525368084] [2021-10-08 15:49:14,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [525368084] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:49:14,219 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-08 15:49:14,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2021-10-08 15:49:14,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227235806] [2021-10-08 15:49:14,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 15:49:14,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:49:14,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 15:49:14,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=3, Unknown=2, NotChecked=2, Total=12 [2021-10-08 15:49:14,221 INFO L87 Difference]: Start difference. First operand 2020 states and 6057 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:49:16,228 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse1 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse1) (<= .cse1 2147483647))))) is different from true [2021-10-08 15:49:16,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:49:16,237 INFO L93 Difference]: Finished difference Result 2020 states and 6057 transitions. [2021-10-08 15:49:16,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-08 15:49:16,238 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-08 15:49:16,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:49:16,246 INFO L225 Difference]: With dead ends: 2020 [2021-10-08 15:49:16,246 INFO L226 Difference]: Without dead ends: 2020 [2021-10-08 15:49:16,246 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5359.1ms TimeCoverageRelationStatistics Valid=7, Invalid=4, Unknown=3, NotChecked=6, Total=20 [2021-10-08 15:49:16,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2020 states. [2021-10-08 15:49:16,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2020 to 2018. [2021-10-08 15:49:16,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2018 states, 2007 states have (on average 3.0159441953163926) internal successors, (6053), 2017 states have internal predecessors, (6053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:49:16,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2018 states to 2018 states and 6053 transitions. [2021-10-08 15:49:16,315 INFO L78 Accepts]: Start accepts. Automaton has 2018 states and 6053 transitions. Word has length 17 [2021-10-08 15:49:16,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:49:16,316 INFO L470 AbstractCegarLoop]: Abstraction has 2018 states and 6053 transitions. [2021-10-08 15:49:16,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:49:16,317 INFO L276 IsEmpty]: Start isEmpty. Operand 2018 states and 6053 transitions. [2021-10-08 15:49:16,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 15:49:16,319 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:49:16,319 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:49:16,362 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2021-10-08 15:49:16,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,32 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:49:16,532 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-08 15:49:16,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:49:16,533 INFO L82 PathProgramCache]: Analyzing trace with hash -570656830, now seen corresponding path program 2 times [2021-10-08 15:49:16,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:49:16,534 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201898146] [2021-10-08 15:49:16,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:49:16,534 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:49:16,543 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-08 15:49:16,544 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1298008099] [2021-10-08 15:49:16,544 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 15:49:16,544 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:49:16,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:49:16,545 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 15:49:16,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-10-08 15:49:16,705 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 15:49:16,705 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 15:49:16,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-08 15:49:16,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:49:16,771 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-08 15:49:16,771 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:49:16,771 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201898146] [2021-10-08 15:49:16,772 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-08 15:49:16,772 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298008099] [2021-10-08 15:49:16,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1298008099] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:49:16,772 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:49:16,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-08 15:49:16,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783077671] [2021-10-08 15:49:16,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 15:49:16,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:49:16,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 15:49:16,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 15:49:16,773 INFO L87 Difference]: Start difference. First operand 2018 states and 6053 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:49:16,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:49:16,909 INFO L93 Difference]: Finished difference Result 2308 states and 6669 transitions. [2021-10-08 15:49:16,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 15:49:16,910 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-08 15:49:16,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:49:16,920 INFO L225 Difference]: With dead ends: 2308 [2021-10-08 15:49:16,920 INFO L226 Difference]: Without dead ends: 2308 [2021-10-08 15:49:16,920 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 15:49:16,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2308 states. [2021-10-08 15:49:16,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2308 to 2018. [2021-10-08 15:49:16,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2018 states, 2007 states have (on average 2.976083707025411) internal successors, (5973), 2017 states have internal predecessors, (5973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:49:16,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2018 states to 2018 states and 5973 transitions. [2021-10-08 15:49:16,990 INFO L78 Accepts]: Start accepts. Automaton has 2018 states and 5973 transitions. Word has length 17 [2021-10-08 15:49:16,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:49:16,990 INFO L470 AbstractCegarLoop]: Abstraction has 2018 states and 5973 transitions. [2021-10-08 15:49:16,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:49:16,990 INFO L276 IsEmpty]: Start isEmpty. Operand 2018 states and 5973 transitions. [2021-10-08 15:49:16,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 15:49:16,992 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:49:16,992 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:49:17,033 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2021-10-08 15:49:17,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,33 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:49:17,206 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-08 15:49:17,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:49:17,206 INFO L82 PathProgramCache]: Analyzing trace with hash 1186856473, now seen corresponding path program 1 times [2021-10-08 15:49:17,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:49:17,207 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919160300] [2021-10-08 15:49:17,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:49:17,207 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:49:17,213 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-08 15:49:17,213 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [139167032] [2021-10-08 15:49:17,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:49:17,213 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:49:17,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:49:17,214 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 15:49:17,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2021-10-08 15:49:17,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:49:17,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 15:49:17,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:49:17,529 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 15:49:17,530 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:49:17,530 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919160300] [2021-10-08 15:49:17,530 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-08 15:49:17,530 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139167032] [2021-10-08 15:49:17,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [139167032] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:49:17,530 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-08 15:49:17,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-10-08 15:49:17,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706034186] [2021-10-08 15:49:17,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-08 15:49:17,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:49:17,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-08 15:49:17,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-10-08 15:49:17,532 INFO L87 Difference]: Start difference. First operand 2018 states and 5973 transitions. Second operand has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:49:17,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:49:17,758 INFO L93 Difference]: Finished difference Result 3762 states and 10588 transitions. [2021-10-08 15:49:17,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-08 15:49:17,759 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 15:49:17,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:49:17,774 INFO L225 Difference]: With dead ends: 3762 [2021-10-08 15:49:17,774 INFO L226 Difference]: Without dead ends: 3346 [2021-10-08 15:49:17,775 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 107.2ms TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2021-10-08 15:49:17,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3346 states. [2021-10-08 15:49:17,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3346 to 2273. [2021-10-08 15:49:17,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2273 states, 2262 states have (on average 2.9792219274977896) internal successors, (6739), 2272 states have internal predecessors, (6739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:49:17,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2273 states to 2273 states and 6739 transitions. [2021-10-08 15:49:17,900 INFO L78 Accepts]: Start accepts. Automaton has 2273 states and 6739 transitions. Word has length 18 [2021-10-08 15:49:17,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:49:17,900 INFO L470 AbstractCegarLoop]: Abstraction has 2273 states and 6739 transitions. [2021-10-08 15:49:17,900 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:49:17,900 INFO L276 IsEmpty]: Start isEmpty. Operand 2273 states and 6739 transitions. [2021-10-08 15:49:17,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 15:49:17,902 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:49:17,902 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:49:17,938 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2021-10-08 15:49:18,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-10-08 15:49:18,103 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-08 15:49:18,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:49:18,105 INFO L82 PathProgramCache]: Analyzing trace with hash 853935453, now seen corresponding path program 1 times [2021-10-08 15:49:18,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:49:18,105 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605300226] [2021-10-08 15:49:18,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:49:18,106 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:49:18,114 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-08 15:49:18,114 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [660128216] [2021-10-08 15:49:18,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:49:18,114 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:49:18,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:49:18,116 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 15:49:18,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2021-10-08 15:49:18,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:49:18,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-08 15:49:18,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:49:18,367 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-08 15:49:18,367 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:49:18,368 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605300226] [2021-10-08 15:49:18,368 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-08 15:49:18,368 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660128216] [2021-10-08 15:49:18,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [660128216] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:49:18,368 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-08 15:49:18,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-10-08 15:49:18,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907454240] [2021-10-08 15:49:18,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-08 15:49:18,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:49:18,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-08 15:49:18,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-08 15:49:18,370 INFO L87 Difference]: Start difference. First operand 2273 states and 6739 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:49:18,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:49:18,639 INFO L93 Difference]: Finished difference Result 2574 states and 7130 transitions. [2021-10-08 15:49:18,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-08 15:49:18,642 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 15:49:18,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:49:18,650 INFO L225 Difference]: With dead ends: 2574 [2021-10-08 15:49:18,650 INFO L226 Difference]: Without dead ends: 2567 [2021-10-08 15:49:18,650 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.4ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-08 15:49:18,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2567 states. [2021-10-08 15:49:18,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2567 to 2367. [2021-10-08 15:49:18,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2367 states, 2355 states have (on average 2.8552016985138002) internal successors, (6724), 2366 states have internal predecessors, (6724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:49:18,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2367 states to 2367 states and 6724 transitions. [2021-10-08 15:49:18,706 INFO L78 Accepts]: Start accepts. Automaton has 2367 states and 6724 transitions. Word has length 18 [2021-10-08 15:49:18,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:49:18,706 INFO L470 AbstractCegarLoop]: Abstraction has 2367 states and 6724 transitions. [2021-10-08 15:49:18,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:49:18,706 INFO L276 IsEmpty]: Start isEmpty. Operand 2367 states and 6724 transitions. [2021-10-08 15:49:18,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-08 15:49:18,708 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:49:18,708 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:49:18,743 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2021-10-08 15:49:18,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-10-08 15:49:18,922 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-08 15:49:18,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:49:18,923 INFO L82 PathProgramCache]: Analyzing trace with hash 1354529981, now seen corresponding path program 1 times [2021-10-08 15:49:18,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:49:18,923 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65620560] [2021-10-08 15:49:18,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:49:18,924 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:49:18,931 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-08 15:49:18,931 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1037236437] [2021-10-08 15:49:18,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:49:18,932 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:49:18,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:49:18,933 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 15:49:18,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2021-10-08 15:49:19,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:49:19,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 15:49:19,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:49:19,176 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-08 15:49:19,177 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:49:19,177 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65620560] [2021-10-08 15:49:19,177 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-08 15:49:19,177 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1037236437] [2021-10-08 15:49:19,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1037236437] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:49:19,178 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-08 15:49:19,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2021-10-08 15:49:19,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486007274] [2021-10-08 15:49:19,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 15:49:19,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:49:19,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 15:49:19,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 15:49:19,179 INFO L87 Difference]: Start difference. First operand 2367 states and 6724 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:49:19,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:49:19,279 INFO L93 Difference]: Finished difference Result 3222 states and 9062 transitions. [2021-10-08 15:49:19,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 15:49:19,279 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-08 15:49:19,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:49:19,329 INFO L225 Difference]: With dead ends: 3222 [2021-10-08 15:49:19,330 INFO L226 Difference]: Without dead ends: 3222 [2021-10-08 15:49:19,330 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.7ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 15:49:19,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3222 states. [2021-10-08 15:49:19,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3222 to 2781. [2021-10-08 15:49:19,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2781 states, 2769 states have (on average 2.930299747201156) internal successors, (8114), 2780 states have internal predecessors, (8114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:49:19,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2781 states to 2781 states and 8114 transitions. [2021-10-08 15:49:19,401 INFO L78 Accepts]: Start accepts. Automaton has 2781 states and 8114 transitions. Word has length 19 [2021-10-08 15:49:19,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:49:19,402 INFO L470 AbstractCegarLoop]: Abstraction has 2781 states and 8114 transitions. [2021-10-08 15:49:19,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:49:19,402 INFO L276 IsEmpty]: Start isEmpty. Operand 2781 states and 8114 transitions. [2021-10-08 15:49:19,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 15:49:19,404 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:49:19,404 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:49:19,444 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2021-10-08 15:49:19,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-10-08 15:49:19,618 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-08 15:49:19,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:49:19,619 INFO L82 PathProgramCache]: Analyzing trace with hash 571016110, now seen corresponding path program 2 times [2021-10-08 15:49:19,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:49:19,619 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894587278] [2021-10-08 15:49:19,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:49:19,620 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:49:19,627 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-08 15:49:19,627 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1252892882] [2021-10-08 15:49:19,628 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 15:49:19,628 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:49:19,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:49:19,629 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 15:49:19,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2021-10-08 15:49:19,813 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 15:49:19,813 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 15:49:19,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-08 15:49:19,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:49:21,338 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-08 15:49:23,574 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-08 15:49:23,575 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 2 not checked. [2021-10-08 15:49:23,575 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:49:23,575 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894587278] [2021-10-08 15:49:23,575 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-08 15:49:23,575 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1252892882] [2021-10-08 15:49:23,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1252892882] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:49:23,575 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-08 15:49:23,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2021-10-08 15:49:23,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140033533] [2021-10-08 15:49:23,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 15:49:23,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:49:23,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 15:49:23,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=3, Unknown=2, NotChecked=2, Total=12 [2021-10-08 15:49:23,577 INFO L87 Difference]: Start difference. First operand 2781 states and 8114 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:49:25,585 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse1 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse1) (<= .cse1 2147483647))))) is different from true [2021-10-08 15:49:25,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:49:25,597 INFO L93 Difference]: Finished difference Result 2785 states and 8124 transitions. [2021-10-08 15:49:25,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 15:49:25,597 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-08 15:49:25,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:49:25,602 INFO L225 Difference]: With dead ends: 2785 [2021-10-08 15:49:25,602 INFO L226 Difference]: Without dead ends: 2785 [2021-10-08 15:49:25,602 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5434.5ms TimeCoverageRelationStatistics Valid=7, Invalid=4, Unknown=3, NotChecked=6, Total=20 [2021-10-08 15:49:25,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2785 states. [2021-10-08 15:49:25,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2785 to 2782. [2021-10-08 15:49:25,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2782 states, 2770 states have (on average 2.9303249097472923) internal successors, (8117), 2781 states have internal predecessors, (8117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:49:25,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2782 states to 2782 states and 8117 transitions. [2021-10-08 15:49:25,672 INFO L78 Accepts]: Start accepts. Automaton has 2782 states and 8117 transitions. Word has length 20 [2021-10-08 15:49:25,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:49:25,672 INFO L470 AbstractCegarLoop]: Abstraction has 2782 states and 8117 transitions. [2021-10-08 15:49:25,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:49:25,672 INFO L276 IsEmpty]: Start isEmpty. Operand 2782 states and 8117 transitions. [2021-10-08 15:49:25,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 15:49:25,674 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:49:25,675 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:49:25,704 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2021-10-08 15:49:25,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,37 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:49:25,889 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-08 15:49:25,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:49:25,889 INFO L82 PathProgramCache]: Analyzing trace with hash 565344218, now seen corresponding path program 3 times [2021-10-08 15:49:25,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:49:25,890 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497590872] [2021-10-08 15:49:25,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:49:25,890 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:49:25,898 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-08 15:49:25,899 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [545779638] [2021-10-08 15:49:25,899 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 15:49:25,899 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:49:25,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:49:25,900 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 15:49:25,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2021-10-08 15:49:26,083 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-08 15:49:26,084 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 15:49:26,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-08 15:49:26,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:49:27,617 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-08 15:49:29,529 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-08 15:49:29,548 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 2 not checked. [2021-10-08 15:49:29,548 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:49:29,548 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497590872] [2021-10-08 15:49:29,548 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-08 15:49:29,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [545779638] [2021-10-08 15:49:29,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [545779638] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:49:29,549 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-08 15:49:29,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2021-10-08 15:49:29,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953217293] [2021-10-08 15:49:29,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 15:49:29,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:49:29,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 15:49:29,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=3, Unknown=2, NotChecked=2, Total=12 [2021-10-08 15:49:29,550 INFO L87 Difference]: Start difference. First operand 2782 states and 8117 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:49:31,557 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse1 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse1) (<= .cse1 2147483647))))) is different from true [2021-10-08 15:49:31,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:49:31,570 INFO L93 Difference]: Finished difference Result 2787 states and 8130 transitions. [2021-10-08 15:49:31,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-08 15:49:31,571 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-08 15:49:31,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:49:31,577 INFO L225 Difference]: With dead ends: 2787 [2021-10-08 15:49:31,577 INFO L226 Difference]: Without dead ends: 2787 [2021-10-08 15:49:31,578 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5183.4ms TimeCoverageRelationStatistics Valid=7, Invalid=4, Unknown=3, NotChecked=6, Total=20 [2021-10-08 15:49:31,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2787 states. [2021-10-08 15:49:31,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2787 to 2783. [2021-10-08 15:49:31,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2783 states, 2771 states have (on average 2.929989173583544) internal successors, (8119), 2782 states have internal predecessors, (8119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:49:31,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2783 states to 2783 states and 8119 transitions. [2021-10-08 15:49:31,661 INFO L78 Accepts]: Start accepts. Automaton has 2783 states and 8119 transitions. Word has length 20 [2021-10-08 15:49:31,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:49:31,661 INFO L470 AbstractCegarLoop]: Abstraction has 2783 states and 8119 transitions. [2021-10-08 15:49:31,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:49:31,661 INFO L276 IsEmpty]: Start isEmpty. Operand 2783 states and 8119 transitions. [2021-10-08 15:49:31,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 15:49:31,663 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:49:31,664 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:49:31,689 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2021-10-08 15:49:31,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-10-08 15:49:31,875 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-08 15:49:31,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:49:31,875 INFO L82 PathProgramCache]: Analyzing trace with hash -175560926, now seen corresponding path program 4 times [2021-10-08 15:49:31,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:49:31,876 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967541191] [2021-10-08 15:49:31,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:49:31,876 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:49:31,883 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-08 15:49:31,883 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1722775968] [2021-10-08 15:49:31,883 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 15:49:31,883 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:49:31,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:49:31,884 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 15:49:31,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2021-10-08 15:49:32,096 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 15:49:32,096 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 15:49:32,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-08 15:49:32,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:49:33,736 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-08 15:49:35,659 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-08 15:49:35,690 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 2 not checked. [2021-10-08 15:49:35,690 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:49:35,690 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967541191] [2021-10-08 15:49:35,690 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-08 15:49:35,690 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1722775968] [2021-10-08 15:49:35,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1722775968] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:49:35,691 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-08 15:49:35,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2021-10-08 15:49:35,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994147060] [2021-10-08 15:49:35,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 15:49:35,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:49:35,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 15:49:35,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=3, Unknown=2, NotChecked=2, Total=12 [2021-10-08 15:49:35,692 INFO L87 Difference]: Start difference. First operand 2783 states and 8119 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:49:37,700 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse1 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse1) (<= .cse1 2147483647))))) is different from true [2021-10-08 15:49:37,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:49:37,713 INFO L93 Difference]: Finished difference Result 2785 states and 8124 transitions. [2021-10-08 15:49:37,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-08 15:49:37,713 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-08 15:49:37,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:49:37,719 INFO L225 Difference]: With dead ends: 2785 [2021-10-08 15:49:37,719 INFO L226 Difference]: Without dead ends: 2785 [2021-10-08 15:49:37,720 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5299.1ms TimeCoverageRelationStatistics Valid=7, Invalid=4, Unknown=3, NotChecked=6, Total=20 [2021-10-08 15:49:37,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2785 states. [2021-10-08 15:49:37,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2785 to 2780. [2021-10-08 15:49:37,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2780 states, 2768 states have (on average 2.9302745664739884) internal successors, (8111), 2779 states have internal predecessors, (8111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:49:37,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2780 states to 2780 states and 8111 transitions. [2021-10-08 15:49:37,792 INFO L78 Accepts]: Start accepts. Automaton has 2780 states and 8111 transitions. Word has length 20 [2021-10-08 15:49:37,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:49:37,792 INFO L470 AbstractCegarLoop]: Abstraction has 2780 states and 8111 transitions. [2021-10-08 15:49:37,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:49:37,793 INFO L276 IsEmpty]: Start isEmpty. Operand 2780 states and 8111 transitions. [2021-10-08 15:49:37,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-08 15:49:37,795 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:49:37,796 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:49:37,835 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2021-10-08 15:49:38,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38,39 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:49:38,009 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-08 15:49:38,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:49:38,010 INFO L82 PathProgramCache]: Analyzing trace with hash 1280852542, now seen corresponding path program 1 times [2021-10-08 15:49:38,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:49:38,010 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262214920] [2021-10-08 15:49:38,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:49:38,010 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:49:38,016 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-08 15:49:38,017 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1552941667] [2021-10-08 15:49:38,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:49:38,017 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:49:38,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:49:38,018 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 15:49:38,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2021-10-08 15:49:38,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:49:38,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-08 15:49:38,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:49:38,293 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-10-08 15:49:38,294 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:49:38,294 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262214920] [2021-10-08 15:49:38,294 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-08 15:49:38,294 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1552941667] [2021-10-08 15:49:38,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1552941667] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:49:38,294 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-08 15:49:38,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2021-10-08 15:49:38,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739336102] [2021-10-08 15:49:38,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-08 15:49:38,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:49:38,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-08 15:49:38,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-08 15:49:38,296 INFO L87 Difference]: Start difference. First operand 2780 states and 8111 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:49:38,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:49:38,371 INFO L93 Difference]: Finished difference Result 4291 states and 12115 transitions. [2021-10-08 15:49:38,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-08 15:49:38,372 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-08 15:49:38,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:49:38,381 INFO L225 Difference]: With dead ends: 4291 [2021-10-08 15:49:38,382 INFO L226 Difference]: Without dead ends: 4291 [2021-10-08 15:49:38,382 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.9ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-08 15:49:38,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4291 states. [2021-10-08 15:49:38,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4291 to 3310. [2021-10-08 15:49:38,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3310 states, 3298 states have (on average 2.963614311704063) internal successors, (9774), 3309 states have internal predecessors, (9774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:49:38,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3310 states to 3310 states and 9774 transitions. [2021-10-08 15:49:38,483 INFO L78 Accepts]: Start accepts. Automaton has 3310 states and 9774 transitions. Word has length 21 [2021-10-08 15:49:38,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:49:38,484 INFO L470 AbstractCegarLoop]: Abstraction has 3310 states and 9774 transitions. [2021-10-08 15:49:38,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:49:38,484 INFO L276 IsEmpty]: Start isEmpty. Operand 3310 states and 9774 transitions. [2021-10-08 15:49:38,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-08 15:49:38,489 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:49:38,489 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:49:38,545 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2021-10-08 15:49:38,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-10-08 15:49:38,704 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-08 15:49:38,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:49:38,704 INFO L82 PathProgramCache]: Analyzing trace with hash -1949794681, now seen corresponding path program 1 times [2021-10-08 15:49:38,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:49:38,705 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208523784] [2021-10-08 15:49:38,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:49:38,705 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:49:38,712 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-08 15:49:38,712 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1212862613] [2021-10-08 15:49:38,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:49:38,713 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:49:38,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:49:38,714 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 15:49:38,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2021-10-08 15:49:38,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:49:38,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-08 15:49:38,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:49:39,482 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-08 15:49:39,482 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:49:39,482 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208523784] [2021-10-08 15:49:39,482 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-08 15:49:39,482 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1212862613] [2021-10-08 15:49:39,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1212862613] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:49:39,483 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-08 15:49:39,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-08 15:49:39,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681946339] [2021-10-08 15:49:39,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 15:49:39,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:49:39,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 15:49:39,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-10-08 15:49:39,485 INFO L87 Difference]: Start difference. First operand 3310 states and 9774 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) [2021-10-08 15:49:39,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:49:39,901 INFO L93 Difference]: Finished difference Result 3419 states and 9996 transitions. [2021-10-08 15:49:39,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-08 15:49:39,901 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 21 [2021-10-08 15:49:39,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:49:39,909 INFO L225 Difference]: With dead ends: 3419 [2021-10-08 15:49:39,909 INFO L226 Difference]: Without dead ends: 3418 [2021-10-08 15:49:39,909 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 341.4ms TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2021-10-08 15:49:39,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3418 states. [2021-10-08 15:49:39,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3418 to 3315. [2021-10-08 15:49:39,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3315 states, 3303 states have (on average 2.96094459582198) internal successors, (9780), 3314 states have internal predecessors, (9780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:49:39,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3315 states to 3315 states and 9780 transitions. [2021-10-08 15:49:39,998 INFO L78 Accepts]: Start accepts. Automaton has 3315 states and 9780 transitions. Word has length 21 [2021-10-08 15:49:39,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:49:39,998 INFO L470 AbstractCegarLoop]: Abstraction has 3315 states and 9780 transitions. [2021-10-08 15:49:39,998 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) [2021-10-08 15:49:39,998 INFO L276 IsEmpty]: Start isEmpty. Operand 3315 states and 9780 transitions. [2021-10-08 15:49:40,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 15:49:40,002 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:49:40,002 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:49:40,046 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2021-10-08 15:49:40,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,41 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:49:40,215 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-08 15:49:40,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:49:40,216 INFO L82 PathProgramCache]: Analyzing trace with hash -1205560912, now seen corresponding path program 1 times [2021-10-08 15:49:40,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:49:40,216 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588822496] [2021-10-08 15:49:40,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:49:40,217 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:49:40,224 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-08 15:49:40,225 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1229782241] [2021-10-08 15:49:40,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:49:40,225 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:49:40,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:49:40,226 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 15:49:40,230 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2021-10-08 15:49:40,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:49:40,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 15:49:40,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:49:40,569 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-10-08 15:49:40,569 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:49:40,570 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588822496] [2021-10-08 15:49:40,570 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-08 15:49:40,570 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1229782241] [2021-10-08 15:49:40,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1229782241] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:49:40,570 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-08 15:49:40,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2021-10-08 15:49:40,570 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247514716] [2021-10-08 15:49:40,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-08 15:49:40,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:49:40,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-08 15:49:40,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-08 15:49:40,571 INFO L87 Difference]: Start difference. First operand 3315 states and 9780 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:49:40,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:49:40,677 INFO L93 Difference]: Finished difference Result 3365 states and 9820 transitions. [2021-10-08 15:49:40,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 15:49:40,678 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-08 15:49:40,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:49:40,685 INFO L225 Difference]: With dead ends: 3365 [2021-10-08 15:49:40,685 INFO L226 Difference]: Without dead ends: 3365 [2021-10-08 15:49:40,686 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.6ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-08 15:49:40,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3365 states. [2021-10-08 15:49:40,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3365 to 3230. [2021-10-08 15:49:40,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3230 states, 3218 states have (on average 2.968614045991299) internal successors, (9553), 3229 states have internal predecessors, (9553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:49:40,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3230 states to 3230 states and 9553 transitions. [2021-10-08 15:49:40,755 INFO L78 Accepts]: Start accepts. Automaton has 3230 states and 9553 transitions. Word has length 22 [2021-10-08 15:49:40,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:49:40,756 INFO L470 AbstractCegarLoop]: Abstraction has 3230 states and 9553 transitions. [2021-10-08 15:49:40,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:49:40,756 INFO L276 IsEmpty]: Start isEmpty. Operand 3230 states and 9553 transitions. [2021-10-08 15:49:40,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 15:49:40,760 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:49:40,760 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:49:40,804 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2021-10-08 15:49:40,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2021-10-08 15:49:40,973 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-08 15:49:40,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:49:40,974 INFO L82 PathProgramCache]: Analyzing trace with hash 1587799005, now seen corresponding path program 2 times [2021-10-08 15:49:40,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:49:40,974 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898041782] [2021-10-08 15:49:40,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:49:40,974 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:49:41,010 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-08 15:49:41,010 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [826537850] [2021-10-08 15:49:41,010 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 15:49:41,010 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:49:41,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:49:41,012 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 15:49:41,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2021-10-08 15:49:41,226 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 15:49:41,227 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 15:49:41,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 15:49:41,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:49:41,294 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-08 15:49:41,294 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:49:41,294 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898041782] [2021-10-08 15:49:41,294 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-08 15:49:41,295 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [826537850] [2021-10-08 15:49:41,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [826537850] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:49:41,295 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-08 15:49:41,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2021-10-08 15:49:41,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141839345] [2021-10-08 15:49:41,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 15:49:41,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:49:41,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 15:49:41,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-08 15:49:41,296 INFO L87 Difference]: Start difference. First operand 3230 states and 9553 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:49:41,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:49:41,413 INFO L93 Difference]: Finished difference Result 3309 states and 9624 transitions. [2021-10-08 15:49:41,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 15:49:41,413 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-08 15:49:41,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:49:41,420 INFO L225 Difference]: With dead ends: 3309 [2021-10-08 15:49:41,420 INFO L226 Difference]: Without dead ends: 3062 [2021-10-08 15:49:41,421 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-08 15:49:41,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3062 states. [2021-10-08 15:49:41,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3062 to 2245. [2021-10-08 15:49:41,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2245 states, 2235 states have (on average 2.8465324384787474) internal successors, (6362), 2244 states have internal predecessors, (6362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:49:41,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2245 states to 2245 states and 6362 transitions. [2021-10-08 15:49:41,474 INFO L78 Accepts]: Start accepts. Automaton has 2245 states and 6362 transitions. Word has length 22 [2021-10-08 15:49:41,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:49:41,476 INFO L470 AbstractCegarLoop]: Abstraction has 2245 states and 6362 transitions. [2021-10-08 15:49:41,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:49:41,477 INFO L276 IsEmpty]: Start isEmpty. Operand 2245 states and 6362 transitions. [2021-10-08 15:49:41,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-08 15:49:41,480 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:49:41,480 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:49:41,532 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2021-10-08 15:49:41,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2021-10-08 15:49:41,693 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-08 15:49:41,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:49:41,694 INFO L82 PathProgramCache]: Analyzing trace with hash -1751695591, now seen corresponding path program 2 times [2021-10-08 15:49:41,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:49:41,694 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636530534] [2021-10-08 15:49:41,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:49:41,695 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:49:41,707 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-08 15:49:41,707 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1924657078] [2021-10-08 15:49:41,707 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 15:49:41,707 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:49:41,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:49:41,709 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 15:49:41,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2021-10-08 15:49:41,955 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 15:49:41,955 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 15:49:41,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-08 15:49:41,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:49:43,660 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-08 15:49:45,708 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-08 15:49:45,743 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 3 not checked. [2021-10-08 15:49:45,743 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:49:45,743 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636530534] [2021-10-08 15:49:45,743 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-08 15:49:45,743 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1924657078] [2021-10-08 15:49:45,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1924657078] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:49:45,744 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-08 15:49:45,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2021-10-08 15:49:45,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540880351] [2021-10-08 15:49:45,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 15:49:45,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:49:45,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 15:49:45,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=3, Unknown=2, NotChecked=2, Total=12 [2021-10-08 15:49:45,745 INFO L87 Difference]: Start difference. First operand 2245 states and 6362 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:49:47,752 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse1 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse1) (<= .cse1 2147483647))))) is different from true [2021-10-08 15:49:47,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:49:47,761 INFO L93 Difference]: Finished difference Result 2255 states and 6385 transitions. [2021-10-08 15:49:47,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-08 15:49:47,762 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-08 15:49:47,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:49:47,767 INFO L225 Difference]: With dead ends: 2255 [2021-10-08 15:49:47,767 INFO L226 Difference]: Without dead ends: 2255 [2021-10-08 15:49:47,768 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5438.7ms TimeCoverageRelationStatistics Valid=7, Invalid=4, Unknown=3, NotChecked=6, Total=20 [2021-10-08 15:49:47,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2255 states. [2021-10-08 15:49:47,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2255 to 2247. [2021-10-08 15:49:47,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2247 states, 2237 states have (on average 2.846222619579794) internal successors, (6367), 2246 states have internal predecessors, (6367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:49:47,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2247 states to 2247 states and 6367 transitions. [2021-10-08 15:49:47,811 INFO L78 Accepts]: Start accepts. Automaton has 2247 states and 6367 transitions. Word has length 23 [2021-10-08 15:49:47,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:49:47,812 INFO L470 AbstractCegarLoop]: Abstraction has 2247 states and 6367 transitions. [2021-10-08 15:49:47,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:49:47,812 INFO L276 IsEmpty]: Start isEmpty. Operand 2247 states and 6367 transitions. [2021-10-08 15:49:47,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-08 15:49:47,815 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:49:47,815 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:49:47,858 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2021-10-08 15:49:48,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,44 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:49:48,028 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-08 15:49:48,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:49:48,029 INFO L82 PathProgramCache]: Analyzing trace with hash -1751701388, now seen corresponding path program 1 times [2021-10-08 15:49:48,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:49:48,029 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678009192] [2021-10-08 15:49:48,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:49:48,029 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:49:48,037 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-08 15:49:48,037 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1823886182] [2021-10-08 15:49:48,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:49:48,037 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:49:48,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:49:48,038 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 15:49:48,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2021-10-08 15:49:48,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:49:48,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-08 15:49:48,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:49:48,484 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 15:49:48,485 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:49:48,485 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678009192] [2021-10-08 15:49:48,485 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-08 15:49:48,485 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823886182] [2021-10-08 15:49:48,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1823886182] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:49:48,485 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-08 15:49:48,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-10-08 15:49:48,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367076817] [2021-10-08 15:49:48,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 15:49:48,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:49:48,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 15:49:48,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-10-08 15:49:48,487 INFO L87 Difference]: Start difference. First operand 2247 states and 6367 transitions. Second operand has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:49:48,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:49:48,823 INFO L93 Difference]: Finished difference Result 4378 states and 11875 transitions. [2021-10-08 15:49:48,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-08 15:49:48,824 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-08 15:49:48,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:49:48,833 INFO L225 Difference]: With dead ends: 4378 [2021-10-08 15:49:48,833 INFO L226 Difference]: Without dead ends: 3508 [2021-10-08 15:49:48,833 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 169.9ms TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2021-10-08 15:49:48,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3508 states. [2021-10-08 15:49:48,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3508 to 2418. [2021-10-08 15:49:48,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2418 states, 2408 states have (on average 2.8492524916943522) internal successors, (6861), 2417 states have internal predecessors, (6861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:49:48,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2418 states to 2418 states and 6861 transitions. [2021-10-08 15:49:48,886 INFO L78 Accepts]: Start accepts. Automaton has 2418 states and 6861 transitions. Word has length 23 [2021-10-08 15:49:48,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:49:48,886 INFO L470 AbstractCegarLoop]: Abstraction has 2418 states and 6861 transitions. [2021-10-08 15:49:48,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:49:48,887 INFO L276 IsEmpty]: Start isEmpty. Operand 2418 states and 6861 transitions. [2021-10-08 15:49:48,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-08 15:49:48,889 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:49:48,889 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:49:48,916 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2021-10-08 15:49:49,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2021-10-08 15:49:49,099 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-08 15:49:49,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:49:49,099 INFO L82 PathProgramCache]: Analyzing trace with hash 1629451794, now seen corresponding path program 1 times [2021-10-08 15:49:49,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:49:49,100 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328620750] [2021-10-08 15:49:49,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:49:49,100 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:49:49,107 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-08 15:49:49,107 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [963137829] [2021-10-08 15:49:49,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:49:49,108 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:49:49,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:49:49,109 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 15:49:49,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2021-10-08 15:49:49,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:49:49,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-08 15:49:49,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:49:49,734 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-10-08 15:49:49,734 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:49:49,734 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328620750] [2021-10-08 15:49:49,735 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-08 15:49:49,735 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963137829] [2021-10-08 15:49:49,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [963137829] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 15:49:49,735 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 15:49:49,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-08 15:49:49,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819631756] [2021-10-08 15:49:49,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-08 15:49:49,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:49:49,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-08 15:49:49,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-08 15:49:49,737 INFO L87 Difference]: Start difference. First operand 2418 states and 6861 transitions. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:49:49,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:49:49,836 INFO L93 Difference]: Finished difference Result 2720 states and 7491 transitions. [2021-10-08 15:49:49,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-08 15:49:49,837 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-08 15:49:49,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:49:49,842 INFO L225 Difference]: With dead ends: 2720 [2021-10-08 15:49:49,843 INFO L226 Difference]: Without dead ends: 2720 [2021-10-08 15:49:49,843 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 41.0ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-08 15:49:49,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2720 states. [2021-10-08 15:49:49,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2720 to 2366. [2021-10-08 15:49:49,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2366 states, 2358 states have (on average 2.7955894826123835) internal successors, (6592), 2365 states have internal predecessors, (6592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:49:49,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2366 states to 2366 states and 6592 transitions. [2021-10-08 15:49:49,885 INFO L78 Accepts]: Start accepts. Automaton has 2366 states and 6592 transitions. Word has length 23 [2021-10-08 15:49:49,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:49:49,885 INFO L470 AbstractCegarLoop]: Abstraction has 2366 states and 6592 transitions. [2021-10-08 15:49:49,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:49:49,886 INFO L276 IsEmpty]: Start isEmpty. Operand 2366 states and 6592 transitions. [2021-10-08 15:49:49,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-08 15:49:49,888 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:49:49,888 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:49:49,917 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2021-10-08 15:49:50,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,46 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:49:50,089 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-08 15:49:50,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:49:50,090 INFO L82 PathProgramCache]: Analyzing trace with hash 1629451795, now seen corresponding path program 1 times [2021-10-08 15:49:50,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:49:50,090 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203958964] [2021-10-08 15:49:50,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:49:50,091 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:49:50,098 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-08 15:49:50,099 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1018278538] [2021-10-08 15:49:50,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:49:50,099 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:49:50,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:49:50,100 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 15:49:50,105 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2021-10-08 15:49:50,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:49:50,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-08 15:49:50,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:49:50,783 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 15:49:50,784 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:49:50,784 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203958964] [2021-10-08 15:49:50,784 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-08 15:49:50,784 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018278538] [2021-10-08 15:49:50,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1018278538] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:49:50,784 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-08 15:49:50,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-08 15:49:50,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53748649] [2021-10-08 15:49:50,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 15:49:50,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:49:50,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 15:49:50,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-08 15:49:50,786 INFO L87 Difference]: Start difference. First operand 2366 states and 6592 transitions. Second operand has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 8 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) [2021-10-08 15:49:51,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:49:51,158 INFO L93 Difference]: Finished difference Result 3200 states and 8735 transitions. [2021-10-08 15:49:51,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-08 15:49:51,159 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 8 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 23 [2021-10-08 15:49:51,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:49:51,165 INFO L225 Difference]: With dead ends: 3200 [2021-10-08 15:49:51,166 INFO L226 Difference]: Without dead ends: 2974 [2021-10-08 15:49:51,166 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 136.8ms TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2021-10-08 15:49:51,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2974 states. [2021-10-08 15:49:51,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2974 to 2605. [2021-10-08 15:49:51,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2605 states, 2597 states have (on average 2.7685791297651137) internal successors, (7190), 2604 states have internal predecessors, (7190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:49:51,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2605 states to 2605 states and 7190 transitions. [2021-10-08 15:49:51,239 INFO L78 Accepts]: Start accepts. Automaton has 2605 states and 7190 transitions. Word has length 23 [2021-10-08 15:49:51,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:49:51,240 INFO L470 AbstractCegarLoop]: Abstraction has 2605 states and 7190 transitions. [2021-10-08 15:49:51,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 8 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) [2021-10-08 15:49:51,240 INFO L276 IsEmpty]: Start isEmpty. Operand 2605 states and 7190 transitions. [2021-10-08 15:49:51,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-08 15:49:51,242 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:49:51,242 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:49:51,269 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2021-10-08 15:49:51,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2021-10-08 15:49:51,443 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-08 15:49:51,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:49:51,444 INFO L82 PathProgramCache]: Analyzing trace with hash 381434285, now seen corresponding path program 2 times [2021-10-08 15:49:51,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:49:51,444 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171703711] [2021-10-08 15:49:51,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:49:51,444 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:49:51,452 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-08 15:49:51,452 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [293916012] [2021-10-08 15:49:51,453 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 15:49:51,453 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:49:51,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:49:51,454 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 15:49:51,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2021-10-08 15:49:51,764 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 15:49:51,764 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 15:49:51,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-08 15:49:51,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:49:52,263 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-10-08 15:49:52,263 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:49:52,263 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171703711] [2021-10-08 15:49:52,264 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-08 15:49:52,264 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293916012] [2021-10-08 15:49:52,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [293916012] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:49:52,264 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-08 15:49:52,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2021-10-08 15:49:52,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689070969] [2021-10-08 15:49:52,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-08 15:49:52,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:49:52,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-08 15:49:52,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-08 15:49:52,266 INFO L87 Difference]: Start difference. First operand 2605 states and 7190 transitions. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:49:52,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:49:52,547 INFO L93 Difference]: Finished difference Result 2499 states and 6766 transitions. [2021-10-08 15:49:52,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 15:49:52,548 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-08 15:49:52,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:49:52,553 INFO L225 Difference]: With dead ends: 2499 [2021-10-08 15:49:52,554 INFO L226 Difference]: Without dead ends: 1914 [2021-10-08 15:49:52,554 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 203.3ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-08 15:49:52,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1914 states. [2021-10-08 15:49:52,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1914 to 1418. [2021-10-08 15:49:52,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1418 states, 1416 states have (on average 2.5508474576271185) internal successors, (3612), 1417 states have internal predecessors, (3612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:49:52,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1418 states to 1418 states and 3612 transitions. [2021-10-08 15:49:52,603 INFO L78 Accepts]: Start accepts. Automaton has 1418 states and 3612 transitions. Word has length 24 [2021-10-08 15:49:52,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:49:52,604 INFO L470 AbstractCegarLoop]: Abstraction has 1418 states and 3612 transitions. [2021-10-08 15:49:52,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:49:52,604 INFO L276 IsEmpty]: Start isEmpty. Operand 1418 states and 3612 transitions. [2021-10-08 15:49:52,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-08 15:49:52,606 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:49:52,606 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:49:52,649 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2021-10-08 15:49:52,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2021-10-08 15:49:52,820 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-08 15:49:52,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:49:52,820 INFO L82 PathProgramCache]: Analyzing trace with hash -144655927, now seen corresponding path program 2 times [2021-10-08 15:49:52,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:49:52,821 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418141957] [2021-10-08 15:49:52,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:49:52,821 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:49:52,830 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-08 15:49:52,830 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [595658538] [2021-10-08 15:49:52,830 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 15:49:52,831 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:49:52,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:49:52,832 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 15:49:52,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2021-10-08 15:49:53,152 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 15:49:53,152 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 15:49:53,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-08 15:49:53,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:49:55,068 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-08 15:49:57,489 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-08 15:49:57,520 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 3 not checked. [2021-10-08 15:49:57,520 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:49:57,520 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418141957] [2021-10-08 15:49:57,520 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-08 15:49:57,520 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [595658538] [2021-10-08 15:49:57,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [595658538] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:49:57,521 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-08 15:49:57,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2021-10-08 15:49:57,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997547915] [2021-10-08 15:49:57,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 15:49:57,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:49:57,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 15:49:57,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=3, Unknown=2, NotChecked=2, Total=12 [2021-10-08 15:49:57,522 INFO L87 Difference]: Start difference. First operand 1418 states and 3612 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:49:59,529 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse1 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse1) (<= .cse1 2147483647))))) is different from true [2021-10-08 15:49:59,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:49:59,534 INFO L93 Difference]: Finished difference Result 1427 states and 3636 transitions. [2021-10-08 15:49:59,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-08 15:49:59,534 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-08 15:49:59,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:49:59,537 INFO L225 Difference]: With dead ends: 1427 [2021-10-08 15:49:59,537 INFO L226 Difference]: Without dead ends: 1427 [2021-10-08 15:49:59,537 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5898.6ms TimeCoverageRelationStatistics Valid=7, Invalid=4, Unknown=3, NotChecked=6, Total=20 [2021-10-08 15:49:59,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1427 states. [2021-10-08 15:49:59,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1427 to 1419. [2021-10-08 15:49:59,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1419 states, 1417 states have (on average 2.551164431898377) internal successors, (3615), 1418 states have internal predecessors, (3615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:49:59,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1419 states to 1419 states and 3615 transitions. [2021-10-08 15:49:59,561 INFO L78 Accepts]: Start accepts. Automaton has 1419 states and 3615 transitions. Word has length 25 [2021-10-08 15:49:59,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:49:59,562 INFO L470 AbstractCegarLoop]: Abstraction has 1419 states and 3615 transitions. [2021-10-08 15:49:59,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:49:59,562 INFO L276 IsEmpty]: Start isEmpty. Operand 1419 states and 3615 transitions. [2021-10-08 15:49:59,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-08 15:49:59,563 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:49:59,563 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:49:59,590 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2021-10-08 15:49:59,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2021-10-08 15:49:59,764 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-08 15:49:59,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:49:59,765 INFO L82 PathProgramCache]: Analyzing trace with hash -149198760, now seen corresponding path program 3 times [2021-10-08 15:49:59,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:49:59,765 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747984542] [2021-10-08 15:49:59,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:49:59,766 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:49:59,774 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-08 15:49:59,775 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [84896571] [2021-10-08 15:49:59,775 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 15:49:59,775 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:49:59,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:49:59,776 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 15:49:59,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2021-10-08 15:50:00,094 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-08 15:50:00,094 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 15:50:00,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-08 15:50:00,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:50:02,120 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-08 15:50:04,392 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-08 15:50:04,393 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 3 not checked. [2021-10-08 15:50:04,393 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:50:04,393 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747984542] [2021-10-08 15:50:04,393 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-08 15:50:04,393 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84896571] [2021-10-08 15:50:04,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [84896571] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:50:04,393 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-08 15:50:04,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2021-10-08 15:50:04,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288836950] [2021-10-08 15:50:04,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 15:50:04,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:50:04,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 15:50:04,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=3, Unknown=2, NotChecked=2, Total=12 [2021-10-08 15:50:04,394 INFO L87 Difference]: Start difference. First operand 1419 states and 3615 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:50:06,402 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse1 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse1) (<= .cse1 2147483647))))) is different from true [2021-10-08 15:50:06,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:50:06,408 INFO L93 Difference]: Finished difference Result 1427 states and 3633 transitions. [2021-10-08 15:50:06,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 15:50:06,408 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-08 15:50:06,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:50:06,411 INFO L225 Difference]: With dead ends: 1427 [2021-10-08 15:50:06,411 INFO L226 Difference]: Without dead ends: 1427 [2021-10-08 15:50:06,411 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5797.9ms TimeCoverageRelationStatistics Valid=7, Invalid=4, Unknown=3, NotChecked=6, Total=20 [2021-10-08 15:50:06,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1427 states. [2021-10-08 15:50:06,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1427 to 1419. [2021-10-08 15:50:06,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1419 states, 1417 states have (on average 2.551164431898377) internal successors, (3615), 1418 states have internal predecessors, (3615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:50:06,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1419 states to 1419 states and 3615 transitions. [2021-10-08 15:50:06,436 INFO L78 Accepts]: Start accepts. Automaton has 1419 states and 3615 transitions. Word has length 25 [2021-10-08 15:50:06,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:50:06,437 INFO L470 AbstractCegarLoop]: Abstraction has 1419 states and 3615 transitions. [2021-10-08 15:50:06,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:50:06,437 INFO L276 IsEmpty]: Start isEmpty. Operand 1419 states and 3615 transitions. [2021-10-08 15:50:06,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-08 15:50:06,438 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:50:06,438 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:50:06,465 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Ended with exit code 0 [2021-10-08 15:50:06,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2021-10-08 15:50:06,639 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-08 15:50:06,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:50:06,640 INFO L82 PathProgramCache]: Analyzing trace with hash -154769677, now seen corresponding path program 3 times [2021-10-08 15:50:06,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:50:06,640 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361194270] [2021-10-08 15:50:06,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:50:06,640 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:50:06,669 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-08 15:50:06,670 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [499414150] [2021-10-08 15:50:06,670 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 15:50:06,670 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:50:06,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:50:06,672 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 15:50:06,693 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2021-10-08 15:50:07,022 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-08 15:50:07,024 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 15:50:07,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-08 15:50:07,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:50:08,775 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-08 15:50:11,028 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-08 15:50:11,028 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 3 not checked. [2021-10-08 15:50:11,029 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:50:11,029 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361194270] [2021-10-08 15:50:11,029 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-08 15:50:11,029 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499414150] [2021-10-08 15:50:11,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [499414150] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:50:11,029 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-08 15:50:11,029 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2021-10-08 15:50:11,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822753102] [2021-10-08 15:50:11,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 15:50:11,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:50:11,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 15:50:11,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=3, Unknown=2, NotChecked=2, Total=12 [2021-10-08 15:50:11,031 INFO L87 Difference]: Start difference. First operand 1419 states and 3615 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:50:13,044 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse1 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse1) (<= .cse1 2147483647))))) is different from true [2021-10-08 15:50:13,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:50:13,049 INFO L93 Difference]: Finished difference Result 1443 states and 3685 transitions. [2021-10-08 15:50:13,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 15:50:13,050 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-08 15:50:13,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:50:13,053 INFO L225 Difference]: With dead ends: 1443 [2021-10-08 15:50:13,053 INFO L226 Difference]: Without dead ends: 1443 [2021-10-08 15:50:13,053 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5649.2ms TimeCoverageRelationStatistics Valid=7, Invalid=4, Unknown=3, NotChecked=6, Total=20 [2021-10-08 15:50:13,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1443 states. [2021-10-08 15:50:13,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1443 to 1426. [2021-10-08 15:50:13,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1426 states, 1424 states have (on average 2.554073033707865) internal successors, (3637), 1425 states have internal predecessors, (3637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:50:13,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1426 states to 1426 states and 3637 transitions. [2021-10-08 15:50:13,084 INFO L78 Accepts]: Start accepts. Automaton has 1426 states and 3637 transitions. Word has length 25 [2021-10-08 15:50:13,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:50:13,084 INFO L470 AbstractCegarLoop]: Abstraction has 1426 states and 3637 transitions. [2021-10-08 15:50:13,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:50:13,084 INFO L276 IsEmpty]: Start isEmpty. Operand 1426 states and 3637 transitions. [2021-10-08 15:50:13,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-08 15:50:13,086 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:50:13,086 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:50:13,112 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2021-10-08 15:50:13,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,51 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:50:13,288 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-08 15:50:13,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:50:13,288 INFO L82 PathProgramCache]: Analyzing trace with hash -806086560, now seen corresponding path program 4 times [2021-10-08 15:50:13,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:50:13,289 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025067652] [2021-10-08 15:50:13,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:50:13,289 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:50:13,297 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-08 15:50:13,297 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1780960542] [2021-10-08 15:50:13,297 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 15:50:13,298 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:50:13,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:50:13,299 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 15:50:13,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2021-10-08 15:50:13,649 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 15:50:13,649 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 15:50:13,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-08 15:50:13,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:50:13,729 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-10-08 15:50:13,730 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:50:13,730 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025067652] [2021-10-08 15:50:13,730 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-08 15:50:13,730 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1780960542] [2021-10-08 15:50:13,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1780960542] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:50:13,730 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-08 15:50:13,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-10-08 15:50:13,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789944232] [2021-10-08 15:50:13,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-08 15:50:13,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:50:13,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-08 15:50:13,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-08 15:50:13,732 INFO L87 Difference]: Start difference. First operand 1426 states and 3637 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:50:13,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:50:13,773 INFO L93 Difference]: Finished difference Result 1755 states and 4488 transitions. [2021-10-08 15:50:13,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 15:50:13,774 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-08 15:50:13,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:50:13,779 INFO L225 Difference]: With dead ends: 1755 [2021-10-08 15:50:13,779 INFO L226 Difference]: Without dead ends: 1755 [2021-10-08 15:50:13,779 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.1ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-08 15:50:13,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1755 states. [2021-10-08 15:50:13,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1755 to 1752. [2021-10-08 15:50:13,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1752 states, 1750 states have (on average 2.56) internal successors, (4480), 1751 states have internal predecessors, (4480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:50:13,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1752 states to 1752 states and 4480 transitions. [2021-10-08 15:50:13,824 INFO L78 Accepts]: Start accepts. Automaton has 1752 states and 4480 transitions. Word has length 25 [2021-10-08 15:50:13,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:50:13,824 INFO L470 AbstractCegarLoop]: Abstraction has 1752 states and 4480 transitions. [2021-10-08 15:50:13,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:50:13,824 INFO L276 IsEmpty]: Start isEmpty. Operand 1752 states and 4480 transitions. [2021-10-08 15:50:13,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-08 15:50:13,827 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:50:13,827 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:50:13,871 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2021-10-08 15:50:14,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,52 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:50:14,043 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-08 15:50:14,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:50:14,043 INFO L82 PathProgramCache]: Analyzing trace with hash -1273821531, now seen corresponding path program 5 times [2021-10-08 15:50:14,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:50:14,044 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062668381] [2021-10-08 15:50:14,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:50:14,044 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:50:14,052 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-08 15:50:14,053 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1404662940] [2021-10-08 15:50:14,053 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 15:50:14,053 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:50:14,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:50:14,054 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 15:50:14,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2021-10-08 15:50:17,096 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-10-08 15:50:17,096 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 15:50:17,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-08 15:50:17,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:50:17,340 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 20 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-08 15:50:17,340 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:50:17,340 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062668381] [2021-10-08 15:50:17,341 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-08 15:50:17,341 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404662940] [2021-10-08 15:50:17,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1404662940] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:50:17,341 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-08 15:50:17,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-10-08 15:50:17,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779136088] [2021-10-08 15:50:17,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 15:50:17,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:50:17,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 15:50:17,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-10-08 15:50:17,343 INFO L87 Difference]: Start difference. First operand 1752 states and 4480 transitions. Second operand has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 12 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:50:17,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:50:17,643 INFO L93 Difference]: Finished difference Result 3387 states and 8417 transitions. [2021-10-08 15:50:17,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-08 15:50:17,644 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 12 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-10-08 15:50:17,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:50:17,649 INFO L225 Difference]: With dead ends: 3387 [2021-10-08 15:50:17,650 INFO L226 Difference]: Without dead ends: 1754 [2021-10-08 15:50:17,650 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 217.9ms TimeCoverageRelationStatistics Valid=138, Invalid=368, Unknown=0, NotChecked=0, Total=506 [2021-10-08 15:50:17,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1754 states. [2021-10-08 15:50:17,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1754 to 1754. [2021-10-08 15:50:17,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1754 states, 1752 states have (on average 2.558219178082192) internal successors, (4482), 1753 states have internal predecessors, (4482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:50:17,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1754 states to 1754 states and 4482 transitions. [2021-10-08 15:50:17,697 INFO L78 Accepts]: Start accepts. Automaton has 1754 states and 4482 transitions. Word has length 27 [2021-10-08 15:50:17,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:50:17,697 INFO L470 AbstractCegarLoop]: Abstraction has 1754 states and 4482 transitions. [2021-10-08 15:50:17,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 12 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:50:17,697 INFO L276 IsEmpty]: Start isEmpty. Operand 1754 states and 4482 transitions. [2021-10-08 15:50:17,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-08 15:50:17,700 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:50:17,700 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:50:17,743 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2021-10-08 15:50:17,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,53 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:50:17,914 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-08 15:50:17,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:50:17,914 INFO L82 PathProgramCache]: Analyzing trace with hash -424233104, now seen corresponding path program 6 times [2021-10-08 15:50:17,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:50:17,915 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294857399] [2021-10-08 15:50:17,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:50:17,915 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:50:17,924 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-08 15:50:17,924 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1629255791] [2021-10-08 15:50:17,924 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 15:50:17,924 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:50:17,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:50:17,925 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 15:50:17,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2021-10-08 15:50:18,299 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-10-08 15:50:18,300 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 15:50:18,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-08 15:50:18,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:50:20,038 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-08 15:50:22,302 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-08 15:50:22,327 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 4 not checked. [2021-10-08 15:50:22,328 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:50:22,328 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294857399] [2021-10-08 15:50:22,328 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-08 15:50:22,328 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629255791] [2021-10-08 15:50:22,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1629255791] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:50:22,328 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-08 15:50:22,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2021-10-08 15:50:22,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005298949] [2021-10-08 15:50:22,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 15:50:22,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:50:22,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 15:50:22,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=3, Unknown=2, NotChecked=2, Total=12 [2021-10-08 15:50:22,329 INFO L87 Difference]: Start difference. First operand 1754 states and 4482 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:50:24,338 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse1 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse1) (<= .cse1 2147483647))))) is different from true [2021-10-08 15:50:24,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:50:24,344 INFO L93 Difference]: Finished difference Result 1768 states and 4515 transitions. [2021-10-08 15:50:24,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-08 15:50:24,345 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-10-08 15:50:24,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:50:24,348 INFO L225 Difference]: With dead ends: 1768 [2021-10-08 15:50:24,348 INFO L226 Difference]: Without dead ends: 1768 [2021-10-08 15:50:24,348 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5611.4ms TimeCoverageRelationStatistics Valid=7, Invalid=4, Unknown=3, NotChecked=6, Total=20 [2021-10-08 15:50:24,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1768 states. [2021-10-08 15:50:24,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1768 to 1756. [2021-10-08 15:50:24,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1756 states, 1754 states have (on average 2.558152793614595) internal successors, (4487), 1755 states have internal predecessors, (4487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:50:24,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1756 states to 1756 states and 4487 transitions. [2021-10-08 15:50:24,376 INFO L78 Accepts]: Start accepts. Automaton has 1756 states and 4487 transitions. Word has length 29 [2021-10-08 15:50:24,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:50:24,376 INFO L470 AbstractCegarLoop]: Abstraction has 1756 states and 4487 transitions. [2021-10-08 15:50:24,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:50:24,376 INFO L276 IsEmpty]: Start isEmpty. Operand 1756 states and 4487 transitions. [2021-10-08 15:50:24,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-08 15:50:24,378 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:50:24,378 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:50:24,407 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2021-10-08 15:50:24,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2021-10-08 15:50:24,579 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-08 15:50:24,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:50:24,580 INFO L82 PathProgramCache]: Analyzing trace with hash -424238901, now seen corresponding path program 4 times [2021-10-08 15:50:24,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:50:24,581 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565101692] [2021-10-08 15:50:24,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:50:24,581 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:50:24,591 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-08 15:50:24,591 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1630434234] [2021-10-08 15:50:24,591 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 15:50:24,591 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:50:24,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:50:24,593 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 15:50:24,598 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2021-10-08 15:50:24,981 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 15:50:24,981 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 15:50:24,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 15:50:24,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:50:25,070 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-08 15:50:25,071 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:50:25,071 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565101692] [2021-10-08 15:50:25,071 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-08 15:50:25,071 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1630434234] [2021-10-08 15:50:25,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1630434234] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:50:25,072 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-08 15:50:25,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-08 15:50:25,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36438772] [2021-10-08 15:50:25,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-08 15:50:25,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:50:25,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-08 15:50:25,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-08 15:50:25,074 INFO L87 Difference]: Start difference. First operand 1756 states and 4487 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:50:25,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:50:25,147 INFO L93 Difference]: Finished difference Result 2087 states and 5343 transitions. [2021-10-08 15:50:25,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 15:50:25,148 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-10-08 15:50:25,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:50:25,154 INFO L225 Difference]: With dead ends: 2087 [2021-10-08 15:50:25,154 INFO L226 Difference]: Without dead ends: 2087 [2021-10-08 15:50:25,154 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.0ms TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-08 15:50:25,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2087 states. [2021-10-08 15:50:25,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2087 to 2082. [2021-10-08 15:50:25,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2082 states, 2080 states have (on average 2.5625) internal successors, (5330), 2081 states have internal predecessors, (5330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:50:25,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2082 states to 2082 states and 5330 transitions. [2021-10-08 15:50:25,199 INFO L78 Accepts]: Start accepts. Automaton has 2082 states and 5330 transitions. Word has length 29 [2021-10-08 15:50:25,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:50:25,199 INFO L470 AbstractCegarLoop]: Abstraction has 2082 states and 5330 transitions. [2021-10-08 15:50:25,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:50:25,199 INFO L276 IsEmpty]: Start isEmpty. Operand 2082 states and 5330 transitions. [2021-10-08 15:50:25,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-08 15:50:25,203 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:50:25,203 INFO L512 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:50:25,241 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2021-10-08 15:50:25,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,55 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:50:25,417 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-08 15:50:25,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:50:25,417 INFO L82 PathProgramCache]: Analyzing trace with hash 615123728, now seen corresponding path program 5 times [2021-10-08 15:50:25,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:50:25,418 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798531854] [2021-10-08 15:50:25,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:50:25,418 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:50:25,427 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-08 15:50:25,427 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1712769456] [2021-10-08 15:50:25,427 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 15:50:25,428 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:50:25,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:50:25,428 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 15:50:25,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2021-10-08 15:53:21,751 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-10-08 15:53:21,751 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 15:53:21,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-08 15:53:21,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:53:22,174 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 30 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-08 15:53:22,174 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:53:22,174 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798531854] [2021-10-08 15:53:22,174 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-08 15:53:22,174 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1712769456] [2021-10-08 15:53:22,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1712769456] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:53:22,175 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-08 15:53:22,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2021-10-08 15:53:22,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76931078] [2021-10-08 15:53:22,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-08 15:53:22,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:53:22,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-08 15:53:22,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2021-10-08 15:53:22,177 INFO L87 Difference]: Start difference. First operand 2082 states and 5330 transitions. Second operand has 15 states, 15 states have (on average 1.8) internal successors, (27), 14 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:53:22,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:53:22,623 INFO L93 Difference]: Finished difference Result 4072 states and 10171 transitions. [2021-10-08 15:53:22,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-08 15:53:22,624 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.8) internal successors, (27), 14 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-10-08 15:53:22,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:53:22,629 INFO L225 Difference]: With dead ends: 4072 [2021-10-08 15:53:22,629 INFO L226 Difference]: Without dead ends: 2084 [2021-10-08 15:53:22,630 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 338.0ms TimeCoverageRelationStatistics Valid=183, Invalid=519, Unknown=0, NotChecked=0, Total=702 [2021-10-08 15:53:22,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2084 states. [2021-10-08 15:53:22,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2084 to 2084. [2021-10-08 15:53:22,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2084 states, 2082 states have (on average 2.5609990393852065) internal successors, (5332), 2083 states have internal predecessors, (5332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:53:22,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2084 states to 2084 states and 5332 transitions. [2021-10-08 15:53:22,665 INFO L78 Accepts]: Start accepts. Automaton has 2084 states and 5332 transitions. Word has length 31 [2021-10-08 15:53:22,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:53:22,666 INFO L470 AbstractCegarLoop]: Abstraction has 2084 states and 5332 transitions. [2021-10-08 15:53:22,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.8) internal successors, (27), 14 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:53:22,666 INFO L276 IsEmpty]: Start isEmpty. Operand 2084 states and 5332 transitions. [2021-10-08 15:53:22,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-08 15:53:22,669 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:53:22,669 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:53:22,729 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2021-10-08 15:53:22,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2021-10-08 15:53:22,870 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-08 15:53:22,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:53:22,871 INFO L82 PathProgramCache]: Analyzing trace with hash -71843675, now seen corresponding path program 6 times [2021-10-08 15:53:22,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:53:22,871 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105011630] [2021-10-08 15:53:22,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:53:22,872 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:53:22,881 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-08 15:53:22,882 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1647487422] [2021-10-08 15:53:22,882 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 15:53:22,882 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:53:22,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:53:22,883 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 15:53:22,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2021-10-08 15:53:23,288 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-10-08 15:53:23,289 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 15:53:23,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-08 15:53:23,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:53:25,310 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-08 15:53:27,753 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-08 15:53:27,784 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 5 not checked. [2021-10-08 15:53:27,785 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:53:27,785 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105011630] [2021-10-08 15:53:27,785 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-08 15:53:27,785 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647487422] [2021-10-08 15:53:27,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1647487422] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:53:27,785 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-08 15:53:27,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2021-10-08 15:53:27,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787192563] [2021-10-08 15:53:27,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 15:53:27,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:53:27,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 15:53:27,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=3, Unknown=2, NotChecked=2, Total=12 [2021-10-08 15:53:27,787 INFO L87 Difference]: Start difference. First operand 2084 states and 5332 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:53:29,795 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse1 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse1) (<= .cse1 2147483647))))) is different from true [2021-10-08 15:53:29,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:53:29,804 INFO L93 Difference]: Finished difference Result 2099 states and 5373 transitions. [2021-10-08 15:53:29,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-08 15:53:29,804 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-10-08 15:53:29,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:53:29,809 INFO L225 Difference]: With dead ends: 2099 [2021-10-08 15:53:29,809 INFO L226 Difference]: Without dead ends: 2099 [2021-10-08 15:53:29,809 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5971.5ms TimeCoverageRelationStatistics Valid=7, Invalid=4, Unknown=3, NotChecked=6, Total=20 [2021-10-08 15:53:29,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2099 states. [2021-10-08 15:53:29,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2099 to 2083. [2021-10-08 15:53:29,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2083 states, 2081 states have (on average 2.560788082652571) internal successors, (5329), 2082 states have internal predecessors, (5329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:53:29,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2083 states to 2083 states and 5329 transitions. [2021-10-08 15:53:29,845 INFO L78 Accepts]: Start accepts. Automaton has 2083 states and 5329 transitions. Word has length 33 [2021-10-08 15:53:29,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:53:29,845 INFO L470 AbstractCegarLoop]: Abstraction has 2083 states and 5329 transitions. [2021-10-08 15:53:29,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:53:29,845 INFO L276 IsEmpty]: Start isEmpty. Operand 2083 states and 5329 transitions. [2021-10-08 15:53:29,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-08 15:53:29,848 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:53:29,848 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:53:29,877 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2021-10-08 15:53:30,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,57 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:53:30,049 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-08 15:53:30,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:53:30,050 INFO L82 PathProgramCache]: Analyzing trace with hash 1044128068, now seen corresponding path program 7 times [2021-10-08 15:53:30,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:53:30,051 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925570338] [2021-10-08 15:53:30,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:53:30,051 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:53:30,076 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-08 15:53:30,076 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [956181411] [2021-10-08 15:53:30,076 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 15:53:30,077 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:53:30,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:53:30,078 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 15:53:30,079 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2021-10-08 15:53:30,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:53:30,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 15:53:30,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:53:30,627 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-10-08 15:53:30,627 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:53:30,627 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925570338] [2021-10-08 15:53:30,627 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-08 15:53:30,627 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [956181411] [2021-10-08 15:53:30,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [956181411] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:53:30,628 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-08 15:53:30,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-08 15:53:30,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588675474] [2021-10-08 15:53:30,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 15:53:30,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:53:30,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 15:53:30,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-10-08 15:53:30,629 INFO L87 Difference]: Start difference. First operand 2083 states and 5329 transitions. Second operand has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 8 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) [2021-10-08 15:53:30,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:53:30,684 INFO L93 Difference]: Finished difference Result 2413 states and 6182 transitions. [2021-10-08 15:53:30,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-08 15:53:30,685 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 8 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 33 [2021-10-08 15:53:30,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:53:30,693 INFO L225 Difference]: With dead ends: 2413 [2021-10-08 15:53:30,693 INFO L226 Difference]: Without dead ends: 2413 [2021-10-08 15:53:30,693 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.2ms TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-10-08 15:53:30,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2413 states. [2021-10-08 15:53:30,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2413 to 2409. [2021-10-08 15:53:30,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2409 states, 2407 states have (on average 2.5641877856252595) internal successors, (6172), 2408 states have internal predecessors, (6172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:53:30,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2409 states to 2409 states and 6172 transitions. [2021-10-08 15:53:30,787 INFO L78 Accepts]: Start accepts. Automaton has 2409 states and 6172 transitions. Word has length 33 [2021-10-08 15:53:30,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:53:30,788 INFO L470 AbstractCegarLoop]: Abstraction has 2409 states and 6172 transitions. [2021-10-08 15:53:30,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 8 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) [2021-10-08 15:53:30,788 INFO L276 IsEmpty]: Start isEmpty. Operand 2409 states and 6172 transitions. [2021-10-08 15:53:30,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-08 15:53:30,793 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:53:30,793 INFO L512 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:53:30,840 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2021-10-08 15:53:31,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2021-10-08 15:53:31,002 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-08 15:53:31,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:53:31,003 INFO L82 PathProgramCache]: Analyzing trace with hash -509111777, now seen corresponding path program 8 times [2021-10-08 15:53:31,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:53:31,003 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004079633] [2021-10-08 15:53:31,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:53:31,003 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:53:31,014 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-08 15:53:31,014 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2076646778] [2021-10-08 15:53:31,014 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 15:53:31,014 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:53:31,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:53:31,016 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 15:53:31,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2021-10-08 15:53:31,405 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 15:53:31,406 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 15:53:31,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-08 15:53:31,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:53:33,425 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-08 15:53:35,832 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-08 15:53:35,873 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 6 not checked. [2021-10-08 15:53:35,874 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:53:35,874 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004079633] [2021-10-08 15:53:35,875 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-08 15:53:35,875 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076646778] [2021-10-08 15:53:35,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2076646778] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:53:35,875 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-08 15:53:35,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2021-10-08 15:53:35,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856504988] [2021-10-08 15:53:35,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 15:53:35,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:53:35,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 15:53:35,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=3, Unknown=2, NotChecked=2, Total=12 [2021-10-08 15:53:35,876 INFO L87 Difference]: Start difference. First operand 2409 states and 6172 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:53:37,885 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse1 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse1) (<= .cse1 2147483647))))) is different from true [2021-10-08 15:53:37,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:53:37,894 INFO L93 Difference]: Finished difference Result 2425 states and 6210 transitions. [2021-10-08 15:53:37,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-08 15:53:37,895 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-08 15:53:37,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:53:37,899 INFO L225 Difference]: With dead ends: 2425 [2021-10-08 15:53:37,899 INFO L226 Difference]: Without dead ends: 2425 [2021-10-08 15:53:37,900 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5898.9ms TimeCoverageRelationStatistics Valid=7, Invalid=4, Unknown=3, NotChecked=6, Total=20 [2021-10-08 15:53:37,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2425 states. [2021-10-08 15:53:37,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2425 to 2407. [2021-10-08 15:53:37,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2407 states, 2405 states have (on average 2.564656964656965) internal successors, (6168), 2406 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:53:37,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2407 states to 2407 states and 6168 transitions. [2021-10-08 15:53:37,945 INFO L78 Accepts]: Start accepts. Automaton has 2407 states and 6168 transitions. Word has length 35 [2021-10-08 15:53:37,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:53:37,946 INFO L470 AbstractCegarLoop]: Abstraction has 2407 states and 6168 transitions. [2021-10-08 15:53:37,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:53:37,946 INFO L276 IsEmpty]: Start isEmpty. Operand 2407 states and 6168 transitions. [2021-10-08 15:53:37,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-08 15:53:37,951 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:53:37,951 INFO L512 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:53:37,993 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2021-10-08 15:53:38,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2021-10-08 15:53:38,166 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-08 15:53:38,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:53:38,167 INFO L82 PathProgramCache]: Analyzing trace with hash -509117574, now seen corresponding path program 7 times [2021-10-08 15:53:38,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:53:38,167 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868645190] [2021-10-08 15:53:38,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:53:38,168 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:53:38,178 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-08 15:53:38,179 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1500326215] [2021-10-08 15:53:38,179 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 15:53:38,179 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:53:38,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:53:38,180 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 15:53:38,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2021-10-08 15:53:38,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:53:38,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-08 15:53:38,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:53:39,014 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 42 proven. 21 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-10-08 15:53:39,014 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:53:39,014 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868645190] [2021-10-08 15:53:39,015 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-08 15:53:39,015 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1500326215] [2021-10-08 15:53:39,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1500326215] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:53:39,015 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-08 15:53:39,015 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2021-10-08 15:53:39,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765519632] [2021-10-08 15:53:39,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-08 15:53:39,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:53:39,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-08 15:53:39,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-10-08 15:53:39,017 INFO L87 Difference]: Start difference. First operand 2407 states and 6168 transitions. Second operand has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 16 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:53:39,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:53:39,515 INFO L93 Difference]: Finished difference Result 4752 states and 11913 transitions. [2021-10-08 15:53:39,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-08 15:53:39,516 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 16 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-08 15:53:39,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:53:39,522 INFO L225 Difference]: With dead ends: 4752 [2021-10-08 15:53:39,522 INFO L226 Difference]: Without dead ends: 2409 [2021-10-08 15:53:39,522 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 435.0ms TimeCoverageRelationStatistics Valid=234, Invalid=696, Unknown=0, NotChecked=0, Total=930 [2021-10-08 15:53:39,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2409 states. [2021-10-08 15:53:39,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2409 to 2409. [2021-10-08 15:53:39,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2409 states, 2407 states have (on average 2.563356875778978) internal successors, (6170), 2408 states have internal predecessors, (6170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:53:39,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2409 states to 2409 states and 6170 transitions. [2021-10-08 15:53:39,567 INFO L78 Accepts]: Start accepts. Automaton has 2409 states and 6170 transitions. Word has length 35 [2021-10-08 15:53:39,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:53:39,567 INFO L470 AbstractCegarLoop]: Abstraction has 2409 states and 6170 transitions. [2021-10-08 15:53:39,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 16 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:53:39,568 INFO L276 IsEmpty]: Start isEmpty. Operand 2409 states and 6170 transitions. [2021-10-08 15:53:39,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-08 15:53:39,571 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:53:39,571 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:53:39,598 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2021-10-08 15:53:39,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59,60 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:53:39,772 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-08 15:53:39,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:53:39,773 INFO L82 PathProgramCache]: Analyzing trace with hash 520052741, now seen corresponding path program 8 times [2021-10-08 15:53:39,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:53:39,773 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714977146] [2021-10-08 15:53:39,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:53:39,774 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:53:39,811 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-08 15:53:39,811 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [185567177] [2021-10-08 15:53:39,812 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 15:53:39,812 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:53:39,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:53:39,813 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 15:53:39,834 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2021-10-08 15:53:40,265 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 15:53:40,266 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 15:53:40,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-08 15:53:40,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:53:42,291 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-08 15:53:44,784 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-08 15:53:44,835 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 6 not checked. [2021-10-08 15:53:44,835 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:53:44,835 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714977146] [2021-10-08 15:53:44,835 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-08 15:53:44,836 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185567177] [2021-10-08 15:53:44,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [185567177] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:53:44,836 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-08 15:53:44,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2021-10-08 15:53:44,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509059068] [2021-10-08 15:53:44,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 15:53:44,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:53:44,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 15:53:44,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=3, Unknown=2, NotChecked=2, Total=12 [2021-10-08 15:53:44,837 INFO L87 Difference]: Start difference. First operand 2409 states and 6170 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:53:46,845 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse1 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse1) (<= .cse1 2147483647))))) is different from true [2021-10-08 15:53:46,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:53:46,854 INFO L93 Difference]: Finished difference Result 2426 states and 6215 transitions. [2021-10-08 15:53:46,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-08 15:53:46,854 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-10-08 15:53:46,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:53:46,859 INFO L225 Difference]: With dead ends: 2426 [2021-10-08 15:53:46,859 INFO L226 Difference]: Without dead ends: 2426 [2021-10-08 15:53:46,859 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6017.8ms TimeCoverageRelationStatistics Valid=7, Invalid=4, Unknown=3, NotChecked=6, Total=20 [2021-10-08 15:53:46,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2426 states. [2021-10-08 15:53:46,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2426 to 2406. [2021-10-08 15:53:46,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2406 states, 2404 states have (on average 2.562811980033278) internal successors, (6161), 2405 states have internal predecessors, (6161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:53:46,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2406 states to 2406 states and 6161 transitions. [2021-10-08 15:53:46,934 INFO L78 Accepts]: Start accepts. Automaton has 2406 states and 6161 transitions. Word has length 37 [2021-10-08 15:53:46,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:53:46,935 INFO L470 AbstractCegarLoop]: Abstraction has 2406 states and 6161 transitions. [2021-10-08 15:53:46,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:53:46,935 INFO L276 IsEmpty]: Start isEmpty. Operand 2406 states and 6161 transitions. [2021-10-08 15:53:46,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-08 15:53:46,940 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:53:46,940 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:53:46,985 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2021-10-08 15:53:47,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,61 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:53:47,154 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-08 15:53:47,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:53:47,155 INFO L82 PathProgramCache]: Analyzing trace with hash -1790686940, now seen corresponding path program 1 times [2021-10-08 15:53:47,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:53:47,155 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762526814] [2021-10-08 15:53:47,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:53:47,156 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:53:47,167 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-08 15:53:47,167 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [793279664] [2021-10-08 15:53:47,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:53:47,167 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:53:47,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:53:47,169 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 15:53:47,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2021-10-08 15:53:47,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:53:47,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-08 15:53:47,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:53:47,792 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-10-08 15:53:47,792 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:53:47,792 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762526814] [2021-10-08 15:53:47,792 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-08 15:53:47,793 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793279664] [2021-10-08 15:53:47,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [793279664] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:53:47,793 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-08 15:53:47,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-10-08 15:53:47,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510102024] [2021-10-08 15:53:47,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-08 15:53:47,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:53:47,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-08 15:53:47,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-10-08 15:53:47,795 INFO L87 Difference]: Start difference. First operand 2406 states and 6161 transitions. Second operand has 9 states, 8 states have (on average 3.125) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:53:47,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:53:47,860 INFO L93 Difference]: Finished difference Result 2732 states and 7004 transitions. [2021-10-08 15:53:47,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-08 15:53:47,861 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-10-08 15:53:47,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:53:47,909 INFO L225 Difference]: With dead ends: 2732 [2021-10-08 15:53:47,911 INFO L226 Difference]: Without dead ends: 2732 [2021-10-08 15:53:47,911 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.0ms TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-10-08 15:53:47,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2732 states. [2021-10-08 15:53:47,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2732 to 2732. [2021-10-08 15:53:47,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2732 states, 2730 states have (on average 2.565567765567766) internal successors, (7004), 2731 states have internal predecessors, (7004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:53:47,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2732 states to 2732 states and 7004 transitions. [2021-10-08 15:53:47,995 INFO L78 Accepts]: Start accepts. Automaton has 2732 states and 7004 transitions. Word has length 37 [2021-10-08 15:53:47,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:53:47,999 INFO L470 AbstractCegarLoop]: Abstraction has 2732 states and 7004 transitions. [2021-10-08 15:53:48,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:53:48,000 INFO L276 IsEmpty]: Start isEmpty. Operand 2732 states and 7004 transitions. [2021-10-08 15:53:48,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-10-08 15:53:48,005 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:53:48,005 INFO L512 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:53:48,057 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2021-10-08 15:53:48,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2021-10-08 15:53:48,222 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-08 15:53:48,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:53:48,223 INFO L82 PathProgramCache]: Analyzing trace with hash 1431813225, now seen corresponding path program 2 times [2021-10-08 15:53:48,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:53:48,223 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411886538] [2021-10-08 15:53:48,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:53:48,223 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:53:48,252 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-08 15:53:48,252 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [451936147] [2021-10-08 15:53:48,253 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 15:53:48,253 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:53:48,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:53:48,257 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 15:53:48,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2021-10-08 15:53:48,711 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 15:53:48,711 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 15:53:48,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-08 15:53:48,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:53:50,636 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-08 15:53:53,122 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-08 15:53:53,123 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 7 not checked. [2021-10-08 15:53:53,123 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:53:53,123 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411886538] [2021-10-08 15:53:53,123 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-08 15:53:53,123 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [451936147] [2021-10-08 15:53:53,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [451936147] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:53:53,123 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-08 15:53:53,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2021-10-08 15:53:53,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026782185] [2021-10-08 15:53:53,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 15:53:53,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:53:53,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 15:53:53,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=3, Unknown=2, NotChecked=2, Total=12 [2021-10-08 15:53:53,125 INFO L87 Difference]: Start difference. First operand 2732 states and 7004 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:53:55,134 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse1 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse1) (<= .cse1 2147483647))))) is different from true [2021-10-08 15:53:55,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:53:55,145 INFO L93 Difference]: Finished difference Result 2753 states and 7046 transitions. [2021-10-08 15:53:55,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 15:53:55,146 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-10-08 15:53:55,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:53:55,151 INFO L225 Difference]: With dead ends: 2753 [2021-10-08 15:53:55,151 INFO L226 Difference]: Without dead ends: 2753 [2021-10-08 15:53:55,151 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5801.7ms TimeCoverageRelationStatistics Valid=7, Invalid=4, Unknown=3, NotChecked=6, Total=20 [2021-10-08 15:53:55,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2753 states. [2021-10-08 15:53:55,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2753 to 2734. [2021-10-08 15:53:55,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2734 states, 2732 states have (on average 2.5651537335285504) internal successors, (7008), 2733 states have internal predecessors, (7008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:53:55,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2734 states to 2734 states and 7008 transitions. [2021-10-08 15:53:55,224 INFO L78 Accepts]: Start accepts. Automaton has 2734 states and 7008 transitions. Word has length 39 [2021-10-08 15:53:55,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:53:55,224 INFO L470 AbstractCegarLoop]: Abstraction has 2734 states and 7008 transitions. [2021-10-08 15:53:55,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:53:55,224 INFO L276 IsEmpty]: Start isEmpty. Operand 2734 states and 7008 transitions. [2021-10-08 15:53:55,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-10-08 15:53:55,228 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:53:55,228 INFO L512 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:53:55,256 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2021-10-08 15:53:55,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,63 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:53:55,429 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-08 15:53:55,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:53:55,430 INFO L82 PathProgramCache]: Analyzing trace with hash 127864963, now seen corresponding path program 3 times [2021-10-08 15:53:55,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:53:55,431 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665589563] [2021-10-08 15:53:55,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:53:55,431 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:53:55,441 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-08 15:53:55,442 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [95751472] [2021-10-08 15:53:55,442 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 15:53:55,442 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:53:55,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:53:55,444 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 15:53:55,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2021-10-08 15:53:55,937 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-08 15:53:55,938 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 15:53:55,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-08 15:53:55,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:53:57,958 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-08 15:54:00,430 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-08 15:54:00,444 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 7 not checked. [2021-10-08 15:54:00,444 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:54:00,444 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665589563] [2021-10-08 15:54:00,444 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-08 15:54:00,444 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95751472] [2021-10-08 15:54:00,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95751472] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:54:00,445 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-08 15:54:00,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2021-10-08 15:54:00,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955132882] [2021-10-08 15:54:00,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 15:54:00,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:54:00,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 15:54:00,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=3, Unknown=2, NotChecked=2, Total=12 [2021-10-08 15:54:00,446 INFO L87 Difference]: Start difference. First operand 2734 states and 7008 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:54:02,455 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse1 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse1) (<= .cse1 2147483647))))) is different from true [2021-10-08 15:54:02,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:54:02,466 INFO L93 Difference]: Finished difference Result 2751 states and 7042 transitions. [2021-10-08 15:54:02,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-08 15:54:02,466 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-10-08 15:54:02,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:54:02,472 INFO L225 Difference]: With dead ends: 2751 [2021-10-08 15:54:02,473 INFO L226 Difference]: Without dead ends: 2751 [2021-10-08 15:54:02,473 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5974.3ms TimeCoverageRelationStatistics Valid=7, Invalid=4, Unknown=3, NotChecked=6, Total=20 [2021-10-08 15:54:02,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2751 states. [2021-10-08 15:54:02,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2751 to 2730. [2021-10-08 15:54:02,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2730 states, 2728 states have (on average 2.565982404692082) internal successors, (7000), 2729 states have internal predecessors, (7000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:54:02,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2730 states to 2730 states and 7000 transitions. [2021-10-08 15:54:02,556 INFO L78 Accepts]: Start accepts. Automaton has 2730 states and 7000 transitions. Word has length 39 [2021-10-08 15:54:02,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:54:02,557 INFO L470 AbstractCegarLoop]: Abstraction has 2730 states and 7000 transitions. [2021-10-08 15:54:02,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:54:02,557 INFO L276 IsEmpty]: Start isEmpty. Operand 2730 states and 7000 transitions. [2021-10-08 15:54:02,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-10-08 15:54:02,562 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:54:02,562 INFO L512 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:54:02,590 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2021-10-08 15:54:02,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,64 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:54:02,763 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-08 15:54:02,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:54:02,764 INFO L82 PathProgramCache]: Analyzing trace with hash -283159684, now seen corresponding path program 1 times [2021-10-08 15:54:02,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:54:02,765 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432004202] [2021-10-08 15:54:02,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:54:02,765 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:54:02,776 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-08 15:54:02,777 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [89197956] [2021-10-08 15:54:02,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:54:02,777 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:54:02,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:54:02,778 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 15:54:02,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2021-10-08 15:54:03,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 15:54:03,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-08 15:54:03,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:54:03,767 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 56 proven. 28 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-10-08 15:54:03,768 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:54:03,768 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432004202] [2021-10-08 15:54:03,769 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-08 15:54:03,769 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89197956] [2021-10-08 15:54:03,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [89197956] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:54:03,769 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-08 15:54:03,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2021-10-08 15:54:03,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818713270] [2021-10-08 15:54:03,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 15:54:03,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:54:03,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 15:54:03,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2021-10-08 15:54:03,772 INFO L87 Difference]: Start difference. First operand 2730 states and 7000 transitions. Second operand has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:54:04,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:54:04,396 INFO L93 Difference]: Finished difference Result 5430 states and 13649 transitions. [2021-10-08 15:54:04,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-08 15:54:04,397 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-10-08 15:54:04,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:54:04,405 INFO L225 Difference]: With dead ends: 5430 [2021-10-08 15:54:04,405 INFO L226 Difference]: Without dead ends: 2732 [2021-10-08 15:54:04,406 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 518.9ms TimeCoverageRelationStatistics Valid=291, Invalid=899, Unknown=0, NotChecked=0, Total=1190 [2021-10-08 15:54:04,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2732 states. [2021-10-08 15:54:04,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2732 to 2732. [2021-10-08 15:54:04,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2732 states, 2730 states have (on average 2.564835164835165) internal successors, (7002), 2731 states have internal predecessors, (7002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:54:04,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2732 states to 2732 states and 7002 transitions. [2021-10-08 15:54:04,490 INFO L78 Accepts]: Start accepts. Automaton has 2732 states and 7002 transitions. Word has length 40 [2021-10-08 15:54:04,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:54:04,490 INFO L470 AbstractCegarLoop]: Abstraction has 2732 states and 7002 transitions. [2021-10-08 15:54:04,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:54:04,490 INFO L276 IsEmpty]: Start isEmpty. Operand 2732 states and 7002 transitions. [2021-10-08 15:54:04,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-10-08 15:54:04,498 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:54:04,498 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:54:04,604 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2021-10-08 15:54:04,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2021-10-08 15:54:04,699 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-08 15:54:04,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:54:04,700 INFO L82 PathProgramCache]: Analyzing trace with hash -1806244793, now seen corresponding path program 2 times [2021-10-08 15:54:04,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:54:04,700 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851057548] [2021-10-08 15:54:04,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:54:04,700 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:54:04,710 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-08 15:54:04,711 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [63946142] [2021-10-08 15:54:04,711 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 15:54:04,711 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:54:04,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:54:04,712 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 15:54:04,713 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2021-10-08 15:54:05,240 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 15:54:05,240 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 15:54:05,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-08 15:54:05,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:54:07,108 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-08 15:54:09,500 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-08 15:54:09,513 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 7 not checked. [2021-10-08 15:54:09,514 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:54:09,514 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851057548] [2021-10-08 15:54:09,514 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-08 15:54:09,514 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63946142] [2021-10-08 15:54:09,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [63946142] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:54:09,514 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-08 15:54:09,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2021-10-08 15:54:09,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047697334] [2021-10-08 15:54:09,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 15:54:09,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:54:09,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 15:54:09,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=3, Unknown=2, NotChecked=2, Total=12 [2021-10-08 15:54:09,515 INFO L87 Difference]: Start difference. First operand 2732 states and 7002 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:54:11,521 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse1 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse1) (<= .cse1 2147483647))))) is different from true [2021-10-08 15:54:11,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:54:11,531 INFO L93 Difference]: Finished difference Result 2769 states and 7091 transitions. [2021-10-08 15:54:11,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-08 15:54:11,532 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-10-08 15:54:11,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:54:11,543 INFO L225 Difference]: With dead ends: 2769 [2021-10-08 15:54:11,543 INFO L226 Difference]: Without dead ends: 2769 [2021-10-08 15:54:11,544 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5677.8ms TimeCoverageRelationStatistics Valid=7, Invalid=4, Unknown=3, NotChecked=6, Total=20 [2021-10-08 15:54:11,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2769 states. [2021-10-08 15:54:11,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2769 to 2734. [2021-10-08 15:54:11,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2734 states, 2732 states have (on average 2.5644216691068813) internal successors, (7006), 2733 states have internal predecessors, (7006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:54:11,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2734 states to 2734 states and 7006 transitions. [2021-10-08 15:54:11,586 INFO L78 Accepts]: Start accepts. Automaton has 2734 states and 7006 transitions. Word has length 42 [2021-10-08 15:54:11,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:54:11,586 INFO L470 AbstractCegarLoop]: Abstraction has 2734 states and 7006 transitions. [2021-10-08 15:54:11,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:54:11,586 INFO L276 IsEmpty]: Start isEmpty. Operand 2734 states and 7006 transitions. [2021-10-08 15:54:11,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-10-08 15:54:11,590 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:54:11,590 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:54:11,618 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2021-10-08 15:54:11,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,66 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:54:11,792 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-08 15:54:11,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:54:11,793 INFO L82 PathProgramCache]: Analyzing trace with hash -1816358543, now seen corresponding path program 3 times [2021-10-08 15:54:11,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:54:11,793 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942480327] [2021-10-08 15:54:11,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:54:11,793 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:54:11,803 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-08 15:54:11,803 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [838482490] [2021-10-08 15:54:11,804 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 15:54:11,804 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:54:11,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:54:11,805 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 15:54:11,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2021-10-08 15:54:12,354 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-08 15:54:12,355 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 15:54:12,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-08 15:54:12,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:54:14,262 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-08 15:54:16,624 WARN L860 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) is different from true [2021-10-08 15:54:16,625 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 7 not checked. [2021-10-08 15:54:16,625 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:54:16,625 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942480327] [2021-10-08 15:54:16,625 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-08 15:54:16,625 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838482490] [2021-10-08 15:54:16,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [838482490] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:54:16,625 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-08 15:54:16,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2021-10-08 15:54:16,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109447190] [2021-10-08 15:54:16,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 15:54:16,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:54:16,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 15:54:16,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=3, Unknown=2, NotChecked=2, Total=12 [2021-10-08 15:54:16,627 INFO L87 Difference]: Start difference. First operand 2734 states and 7006 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:54:18,640 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~M~0 ~N~0))) (and (< c_thread1Thread1of1ForFork0_~i~0 .cse0) (<= .cse0 2147483647)))) (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse1 (* ~M~0 ~N~0))) (and (<= c_~L~0 .cse1) (<= .cse1 2147483647))))) is different from true [2021-10-08 15:54:18,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:54:18,651 INFO L93 Difference]: Finished difference Result 2817 states and 7195 transitions. [2021-10-08 15:54:18,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 15:54:18,651 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-10-08 15:54:18,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:54:18,657 INFO L225 Difference]: With dead ends: 2817 [2021-10-08 15:54:18,658 INFO L226 Difference]: Without dead ends: 2817 [2021-10-08 15:54:18,658 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5755.7ms TimeCoverageRelationStatistics Valid=7, Invalid=4, Unknown=3, NotChecked=6, Total=20 [2021-10-08 15:54:18,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2817 states. [2021-10-08 15:54:18,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2817 to 2766. [2021-10-08 15:54:18,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2766 states, 2764 states have (on average 2.564399421128799) internal successors, (7088), 2765 states have internal predecessors, (7088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:54:18,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2766 states to 2766 states and 7088 transitions. [2021-10-08 15:54:18,716 INFO L78 Accepts]: Start accepts. Automaton has 2766 states and 7088 transitions. Word has length 42 [2021-10-08 15:54:18,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:54:18,716 INFO L470 AbstractCegarLoop]: Abstraction has 2766 states and 7088 transitions. [2021-10-08 15:54:18,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:54:18,716 INFO L276 IsEmpty]: Start isEmpty. Operand 2766 states and 7088 transitions. [2021-10-08 15:54:18,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-10-08 15:54:18,721 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:54:18,721 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:54:18,748 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Ended with exit code 0 [2021-10-08 15:54:18,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,67 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:54:18,923 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-08 15:54:18,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:54:18,923 INFO L82 PathProgramCache]: Analyzing trace with hash 1491178225, now seen corresponding path program 4 times [2021-10-08 15:54:18,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:54:18,924 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111942999] [2021-10-08 15:54:18,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:54:18,924 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:54:18,936 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-08 15:54:18,936 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1381216179] [2021-10-08 15:54:18,937 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 15:54:18,937 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:54:18,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:54:18,938 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 15:54:18,939 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2021-10-08 15:54:19,577 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 15:54:19,578 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 15:54:19,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 15:54:19,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 15:54:19,719 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-10-08 15:54:19,719 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 15:54:19,719 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111942999] [2021-10-08 15:54:19,719 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-08 15:54:19,719 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381216179] [2021-10-08 15:54:19,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1381216179] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 15:54:19,720 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-08 15:54:19,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-10-08 15:54:19,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178068246] [2021-10-08 15:54:19,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 15:54:19,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 15:54:19,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 15:54:19,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-10-08 15:54:19,721 INFO L87 Difference]: Start difference. First operand 2766 states and 7088 transitions. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:54:19,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 15:54:19,798 INFO L93 Difference]: Finished difference Result 3098 states and 7945 transitions. [2021-10-08 15:54:19,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-08 15:54:19,799 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-10-08 15:54:19,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 15:54:19,808 INFO L225 Difference]: With dead ends: 3098 [2021-10-08 15:54:19,809 INFO L226 Difference]: Without dead ends: 3098 [2021-10-08 15:54:19,809 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.0ms TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-10-08 15:54:19,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3098 states. [2021-10-08 15:54:19,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3098 to 3096. [2021-10-08 15:54:19,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3096 states, 3094 states have (on average 2.5665804783451844) internal successors, (7941), 3095 states have internal predecessors, (7941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:54:19,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3096 states to 3096 states and 7941 transitions. [2021-10-08 15:54:19,893 INFO L78 Accepts]: Start accepts. Automaton has 3096 states and 7941 transitions. Word has length 42 [2021-10-08 15:54:19,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 15:54:19,893 INFO L470 AbstractCegarLoop]: Abstraction has 3096 states and 7941 transitions. [2021-10-08 15:54:19,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 15:54:19,893 INFO L276 IsEmpty]: Start isEmpty. Operand 3096 states and 7941 transitions. [2021-10-08 15:54:19,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-10-08 15:54:19,904 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 15:54:19,904 INFO L512 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 15:54:19,956 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2021-10-08 15:54:20,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2021-10-08 15:54:20,119 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-10-08 15:54:20,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 15:54:20,119 INFO L82 PathProgramCache]: Analyzing trace with hash -1492177140, now seen corresponding path program 5 times [2021-10-08 15:54:20,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 15:54:20,119 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875929024] [2021-10-08 15:54:20,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 15:54:20,119 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 15:54:20,131 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-08 15:54:20,131 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [633869733] [2021-10-08 15:54:20,131 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 15:54:20,132 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 15:54:20,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:54:20,133 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 15:54:20,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process Received shutdown request... [2021-10-08 16:02:40,534 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-08 16:02:40,534 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-08 16:02:41,731 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 [2021-10-08 16:02:41,735 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forcibly destroying the process [2021-10-08 16:02:41,763 ERROR L247 FreeRefinementEngine]: Caught known exception: Timeout or Toolchain cancelled by user [2021-10-08 16:02:41,765 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:02:41,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2021-10-08 16:02:41,765 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 137 [2021-10-08 16:02:41,766 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was analyzing trace of length 45 with TraceHistMax 9,while AutomatonFreeRefinementEngine was Timeout during CAMEL. [2021-10-08 16:02:41,767 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:02:41,767 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:02:41,768 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:02:41,768 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:02:41,768 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:02:41,768 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:02:41,768 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:02:41,768 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:02:41,768 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:02:41,769 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:02:41,769 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:02:41,769 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:02:41,769 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:02:41,769 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:02:41,769 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:02:41,769 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:02:41,770 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:02:41,770 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:02:41,770 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:02:41,770 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:02:41,770 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:02:41,770 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:02:41,770 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:02:41,770 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:02:41,770 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:02:41,771 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:02:41,771 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-08 16:02:41,771 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-08 16:02:41,771 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:02:41,771 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:02:41,771 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:02:41,771 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:02:41,771 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:02:41,771 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:02:41,771 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:02:41,772 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:02:41,772 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:02:41,778 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-08 16:02:41,778 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-08 16:02:41,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.10 04:02:41 BasicIcfg [2021-10-08 16:02:41,780 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-08 16:02:41,780 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.witnessprinter [2021-10-08 16:02:41,782 INFO L168 Benchmark]: Toolchain (without parser) took 859497.56 ms. Allocated memory was 151.0 MB in the beginning and 335.5 MB in the end (delta: 184.5 MB). Free memory was 125.4 MB in the beginning and 119.8 MB in the end (delta: 5.6 MB). Peak memory consumption was 190.7 MB. Max. memory is 8.0 GB. [2021-10-08 16:02:41,782 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 151.0 MB. Free memory is still 123.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-08 16:02:41,783 INFO L168 Benchmark]: CACSL2BoogieTranslator took 361.55 ms. Allocated memory is still 151.0 MB. Free memory was 124.9 MB in the beginning and 113.9 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-10-08 16:02:41,783 INFO L168 Benchmark]: Boogie Procedure Inliner took 67.05 ms. Allocated memory is still 151.0 MB. Free memory was 113.9 MB in the beginning and 111.5 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-08 16:02:41,784 INFO L168 Benchmark]: Boogie Preprocessor took 44.42 ms. Allocated memory is still 151.0 MB. Free memory was 111.5 MB in the beginning and 109.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-08 16:02:41,784 INFO L168 Benchmark]: RCFGBuilder took 845.84 ms. Allocated memory is still 151.0 MB. Free memory was 109.7 MB in the beginning and 88.7 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2021-10-08 16:02:41,784 INFO L168 Benchmark]: TraceAbstraction took 858163.04 ms. Allocated memory was 151.0 MB in the beginning and 335.5 MB in the end (delta: 184.5 MB). Free memory was 88.2 MB in the beginning and 119.8 MB in the end (delta: -31.6 MB). Peak memory consumption was 154.0 MB. Max. memory is 8.0 GB. [2021-10-08 16:02:41,787 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 151.0 MB. Free memory is still 123.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 361.55 ms. Allocated memory is still 151.0 MB. Free memory was 124.9 MB in the beginning and 113.9 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 67.05 ms. Allocated memory is still 151.0 MB. Free memory was 113.9 MB in the beginning and 111.5 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 44.42 ms. Allocated memory is still 151.0 MB. Free memory was 111.5 MB in the beginning and 109.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 845.84 ms. Allocated memory is still 151.0 MB. Free memory was 109.7 MB in the beginning and 88.7 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 858163.04 ms. Allocated memory was 151.0 MB in the beginning and 335.5 MB in the end (delta: 184.5 MB). Free memory was 88.2 MB in the beginning and 119.8 MB in the end (delta: -31.6 MB). Peak memory consumption was 154.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 21313.4ms, 276 PlacesBefore, 56 PlacesAfterwards, 295 TransitionsBefore, 56 TransitionsAfterwards, 1916 CoEnabledTransitionPairs, 8 FixpointIterations, 223 TrivialSequentialCompositions, 53 ConcurrentSequentialCompositions, 50 TrivialYvCompositions, 6 ConcurrentYvCompositions, 19 ChoiceCompositions, 351 TotalNumberOfCompositions, 3741 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2263, positive: 2129, positive conditional: 0, positive unconditional: 2129, negative: 134, negative conditional: 0, negative unconditional: 134, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1249, positive: 1218, positive conditional: 0, positive unconditional: 1218, negative: 31, negative conditional: 0, negative unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1249, positive: 1218, positive conditional: 0, positive unconditional: 1218, negative: 31, negative conditional: 0, negative unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 31, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 31, negative conditional: 0, negative unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 111, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 111, negative conditional: 0, negative unconditional: 111, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2263, positive: 911, positive conditional: 0, positive unconditional: 911, negative: 103, negative conditional: 0, negative unconditional: 103, unknown: 1249, unknown conditional: 0, unknown unconditional: 1249] , Statistics on independence cache: Total cache size (in pairs): 99, Positive cache size: 84, Positive conditional cache size: 0, Positive unconditional cache size: 84, Negative cache size: 15, Negative conditional cache size: 0, Negative unconditional cache size: 15 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 48]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 45 with TraceHistMax 9,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 48]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 45 with TraceHistMax 9,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 56]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 45 with TraceHistMax 9,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 58]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 45 with TraceHistMax 9,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 56]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 45 with TraceHistMax 9,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 58]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 45 with TraceHistMax 9,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 58]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 45 with TraceHistMax 9,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 58]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 45 with TraceHistMax 9,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 57]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 45 with TraceHistMax 9,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 57]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 45 with TraceHistMax 9,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 74]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 45 with TraceHistMax 9,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 74]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 45 with TraceHistMax 9,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 75]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 45 with TraceHistMax 9,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 75]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 45 with TraceHistMax 9,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 103]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 45 with TraceHistMax 9,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 103]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 45 with TraceHistMax 9,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 103]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 45 with TraceHistMax 9,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 103]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 45 with TraceHistMax 9,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 103]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 45 with TraceHistMax 9,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 79]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 45 with TraceHistMax 9,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 103]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 45 with TraceHistMax 9,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 79]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 45 with TraceHistMax 9,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 92]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 45 with TraceHistMax 9,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 92]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 45 with TraceHistMax 9,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 92]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 45 with TraceHistMax 9,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 92]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 45 with TraceHistMax 9,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 85]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 45 with TraceHistMax 9,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 84]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 45 with TraceHistMax 9,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 321 locations, 38 error locations. Started 1 CEGAR loops. OverallTime: 857934.5ms, OverallIterations: 69, TraceHistogramMax: 9, EmptinessCheckTime: 159.9ms, AutomataDifference: 44839.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 21390.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 2862 SDtfs, 3823 SDslu, 5210 SDs, 0 SdLazy, 1945 SolverSat, 370 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 4422.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1369 GetRequests, 1010 SyntacticMatches, 0 SemanticMatches, 359 ConstructedPredicates, 53 IntricatePredicates, 0 DeprecatedPredicates, 713 ImplicationChecksByTransitivity, 102652.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=3315occurred in iteration=41, InterpolantAutomatonStates: 459, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 3179.2ms AutomataMinimizationTime, 68 MinimizatonAttempts, 14184 StatesRemovedByMinimization, 58 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 905.0ms SsaConstructionTime, 181128.6ms SatisfiabilityAnalysisTime, 76858.1ms InterpolantComputationTime, 1308 NumberOfCodeBlocks, 946 NumberOfCodeBlocksAsserted, 81 NumberOfCheckSat, 1240 ConstructedInterpolants, 497 QuantifiedInterpolants, 8633 SizeOfPredicates, 139 NumberOfNonLiveVariables, 12947 ConjunctsInSsa, 436 ConjunctsInUnsatCore, 68 InterpolantComputations, 21 PerfectInterpolantSequences, 1550/1905 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown